diff --git a/doc/tutorial/010_ObjectModel.md b/doc/tutorial/010_ObjectModel.md
index db30a3c3..6680cf4e 100644
--- a/doc/tutorial/010_ObjectModel.md
+++ b/doc/tutorial/010_ObjectModel.md
@@ -87,7 +87,7 @@ Find a global Object (ouside an Object)
 	#include <ewol/context/Context.hpp>
 	
 	ewol::ObjectShared tmpObject = ewol::getContext().getEObjectManager().getObjectNamed("obj Name");
-	if (tmpObject == nullptr) {
+	if (tmpObject == null) {
 		APPL_ERROR("The Object does not exist");
 	}
 ```
@@ -97,7 +97,7 @@ Find a global Object (inside an Object)
 
 ```{.cpp}
 	ewol::ObjectShared tmpObject = getObjectNamed("obj Name");
-	if (tmpObject == nullptr) {
+	if (tmpObject == null) {
 		APPL_ERROR("The Object does not exist");
 	}
 ```
diff --git a/doc/tutorial/012_ObjectMessage.md b/doc/tutorial/012_ObjectMessage.md
index b054791a..ec52e030 100644
--- a/doc/tutorial/012_ObjectMessage.md
+++ b/doc/tutorial/012_ObjectMessage.md
@@ -54,7 +54,7 @@ namespace appl {
 			void init() {
 				ewol::Object::init();
 				m_button = ewol::widget::Button::create();
-				if (m_button == nullptr) {
+				if (m_button == null) {
 					APPL_ERROR("Can not create button...");
 					return;
 				}
diff --git a/doc/tutorial/021_Resources.md b/doc/tutorial/021_Resources.md
index a32a59b9..09b02b0f 100644
--- a/doc/tutorial/021_Resources.md
+++ b/doc/tutorial/021_Resources.md
@@ -57,7 +57,7 @@ namespace appl {
 		public:
 			void onChangePropertyFile() {
 				m_config = ewol::resource::ConfigFile::create(*propertyConfig);
-				if (m_config != nullptr) {
+				if (m_config != null) {
 					m_configValId = m_config->request("exampleConfigName");
 				}
 			}
diff --git a/doc/tutorial/030_ConplexeXmlGui.md b/doc/tutorial/030_ConplexeXmlGui.md
index 16003ace..b6cf4715 100644
--- a/doc/tutorial/030_ConplexeXmlGui.md
+++ b/doc/tutorial/030_ConplexeXmlGui.md
@@ -32,7 +32,7 @@ First create the widget:
 
 ```{.cpp}
 	ewol::widget::ButtonShared tmpWidget = ewol::widget::Button::create();
-	if (tmpWidget == nullptr) {
+	if (tmpWidget == null) {
 		APPL_CRITICAL("The widget can not be created");
 	}
 ```
@@ -60,7 +60,7 @@ We can configure the wiget before the init() is called.
 	    "name", etk::String("my name"),
 	    "expand", bvec2(true,false),
 	    "fill", bvec2(true,true));
-	if (tmpWidget == nullptr) {
+	if (tmpWidget == null) {
 		APPL_CRITICAL("The widget can not be created");
 	}
 ```
@@ -78,7 +78,7 @@ Call generic factory system (compositing)
 ```{.cpp}
 	#include <ewol::widget::Composer.hpp>
 	ewol::widget::WidgetShared tmpWidget = ewol::widget::composerGenerateString("<button name='my name' expand='true,false' fill='true,true'/>");
-	if (tmpWidget == nullptr) {
+	if (tmpWidget == null) {
 		APPL_CRITICAL("The widget can not be created");
 	}
 ```
@@ -99,7 +99,7 @@ File ```gui.xml```
 ```{.cpp}
 	#include <ewol::widget::Composer.hpp>
 	ewol::widget::WidgetShared tmpWidget = ewol::widget::composerGenerateFile("DATA:gui.xml");
-	if (tmpWidget == nullptr) {
+	if (tmpWidget == null) {
 		APPL_CRITICAL("The widget can not be created");
 	}
 ```
diff --git a/ewol/compositing/Area.cpp b/ewol/compositing/Area.cpp
index 88388341..fc8f104e 100644
--- a/ewol/compositing/Area.cpp
+++ b/ewol/compositing/Area.cpp
@@ -18,19 +18,19 @@ const int32_t ewol::compositing::Area::m_vboIdColor(2);
 ewol::compositing::Area::Area(const ivec2& _size) :
   m_position(0.0, 0.0, 0.0),
   m_color(etk::color::white),
-  m_GLprogram(nullptr),
+  m_GLprogram(null),
   m_GLPosition(-1),
   m_GLMatrix(-1),
   m_GLColor(-1),
   m_GLtexture(-1),
   m_GLtexID(-1),
-  m_resource(nullptr) {
+  m_resource(null) {
 	m_resource = ewol::resource::Texture::create();
 	m_resource->setImageSize(_size);
 	m_resource->flush();
 	// Create the VBO:
 	m_VBO = gale::resource::VirtualBufferObject::create(NB_VBO);
-	if (m_VBO == nullptr) {
+	if (m_VBO == null) {
 		EWOL_ERROR("can not instanciate VBO ...");
 		return;
 	}
@@ -47,7 +47,7 @@ void ewol::compositing::Area::loadProgram() {
 	// get the shader resource :
 	m_GLPosition = 0;
 	m_GLprogram = gale::resource::Program::create(etk::String("{ewol}DATA:textured3D.prog"));
-	if (m_GLprogram != nullptr) {
+	if (m_GLprogram != null) {
 		m_GLPosition = m_GLprogram->getAttribute("EW_coord3d");
 		m_GLColor    = m_GLprogram->getAttribute("EW_color");
 		m_GLtexture  = m_GLprogram->getAttribute("EW_texture2d");
@@ -61,11 +61,11 @@ void ewol::compositing::Area::draw(bool _disableDepthTest) {
 		//EWOL_WARNING("Nothink to draw...");
 		return;
 	}
-	if (m_resource == nullptr) {
+	if (m_resource == null) {
 		// this is a normale case ... the user can choice to have no image ...
 		return;
 	}
-	if (m_GLprogram == nullptr) {
+	if (m_GLprogram == null) {
 		EWOL_ERROR("No shader ...");
 		return;
 	}
diff --git a/ewol/compositing/Drawing.cpp b/ewol/compositing/Drawing.cpp
index 4c095496..b1ebce9c 100644
--- a/ewol/compositing/Drawing.cpp
+++ b/ewol/compositing/Drawing.cpp
@@ -229,7 +229,7 @@ ewol::compositing::Drawing::Drawing() :
   m_clippingEnable(false),
   m_color(etk::color::black),
   m_colorBg(etk::color::none),
-  m_GLprogram(nullptr),
+  m_GLprogram(null),
   m_GLPosition(-1),
   m_GLMatrix(-1),
   m_GLMatrixPosition(-1),
@@ -243,7 +243,7 @@ ewol::compositing::Drawing::Drawing() :
 	}
 	// Create the VBO:
 	m_VBO = gale::resource::VirtualBufferObject::create(NB_VBO);
-	if (m_VBO == nullptr) {
+	if (m_VBO == null) {
 		EWOL_ERROR("can not instanciate VBO ...");
 		return;
 	}
@@ -301,7 +301,7 @@ void ewol::compositing::Drawing::loadProgram() {
 	// oad the new ...
 	m_GLprogram = gale::resource::Program::create("{ewol}DATA:color3.prog");
 	// get the shader resource :
-	if (m_GLprogram != nullptr) {
+	if (m_GLprogram != null) {
 		m_GLPosition = m_GLprogram->getAttribute("EW_coord3d");
 		m_GLColor = m_GLprogram->getAttribute("EW_color");
 		m_GLMatrix = m_GLprogram->getUniform("EW_MatrixTransformation");
@@ -315,7 +315,7 @@ void ewol::compositing::Drawing::draw(bool _disableDepthTest) {
 		//EWOL_WARNING("Nothink to draw...");
 		return;
 	}
-	if (m_GLprogram == nullptr) {
+	if (m_GLprogram == null) {
 		EWOL_ERROR("No shader ...");
 		return;
 	}
diff --git a/ewol/compositing/Image.cpp b/ewol/compositing/Image.cpp
index cf233f8d..f3b9e618 100644
--- a/ewol/compositing/Image.cpp
+++ b/ewol/compositing/Image.cpp
@@ -28,18 +28,18 @@ ewol::compositing::Image::Image(const etk::String& _imageName,
   m_clippingEnable(false),
   m_color(etk::color::white),
   m_angle(0.0),
-  m_GLprogram(nullptr),
+  m_GLprogram(null),
   m_GLPosition(-1),
   m_GLMatrix(-1),
   m_GLColor(-1),
   m_GLtexture(-1),
   m_GLtexID(-1),
   m_distanceFieldMode(_df),
-  m_resource(nullptr),
-  m_resourceDF(nullptr) {
+  m_resource(null),
+  m_resourceDF(null) {
 	// Create the VBO:
 	m_VBO = gale::resource::VirtualBufferObject::create(NB_VBO);
-	if (m_VBO == nullptr) {
+	if (m_VBO == null) {
 		EWOL_ERROR("can not instanciate VBO ...");
 		return;
 	}
@@ -62,7 +62,7 @@ void ewol::compositing::Image::loadProgram() {
 	} else {
 		m_GLprogram = gale::resource::Program::create("{ewol}DATA:textured3D.prog");
 	}
-	if (m_GLprogram != nullptr) {
+	if (m_GLprogram != null) {
 		m_GLPosition = m_GLprogram->getAttribute("EW_coord3d");
 		m_GLColor    = m_GLprogram->getAttribute("EW_color");
 		m_GLtexture  = m_GLprogram->getAttribute("EW_texture2d");
@@ -76,13 +76,13 @@ void ewol::compositing::Image::draw(bool _disableDepthTest) {
 		//EWOL_WARNING("Nothink to draw...");
 		return;
 	}
-	if (    m_resource == nullptr
-	     && m_resourceDF == nullptr
-	     && m_resourceImage == nullptr) {
+	if (    m_resource == null
+	     && m_resourceDF == null
+	     && m_resourceImage == null) {
 		// this is a normale case ... the user can choice to have no image ...
 		return;
 	}
-	if (m_GLprogram == nullptr) {
+	if (m_GLprogram == null) {
 		EWOL_ERROR("No shader ...");
 		return;
 	}
@@ -97,9 +97,9 @@ void ewol::compositing::Image::draw(bool _disableDepthTest) {
 	m_GLprogram->use();
 	m_GLprogram->uniformMatrix(m_GLMatrix, tmpMatrix);
 	// TextureID
-	if (m_resourceImage != nullptr) {
+	if (m_resourceImage != null) {
 		m_GLprogram->setTexture0(m_GLtexID, m_resourceImage->getRendererId());
-	} else if (m_resource != nullptr) {
+	} else if (m_resource != null) {
 		if (m_distanceFieldMode == true) {
 			EWOL_ERROR("FONT type error Request distance field and display normal ...");
 		}
@@ -172,7 +172,7 @@ void ewol::compositing::Image::print(const vec2& _size) {
 void ewol::compositing::Image::printPart(const vec2& _size,
                                          vec2 _sourcePosStart,
                                          vec2 _sourcePosStop) {
-	if (m_resource == nullptr) {
+	if (m_resource == null) {
 		return;
 	}
 	vec2 openGLSize = vec2(m_resource->getOpenGlSize().x(), m_resource->getOpenGlSize().y());
@@ -292,28 +292,28 @@ void ewol::compositing::Image::setSource(const etk::String& _newFile, const vec2
 		// link to new one
 		if (m_distanceFieldMode == false) {
 			m_resource = ewol::resource::TextureFile::create(m_filename, tmpSize);
-			if (m_resource == nullptr) {
+			if (m_resource == null) {
 				EWOL_ERROR("Can not get Image resource");
 			}
 		} else {
 			m_resourceDF = ewol::resource::ImageDF::create(m_filename, tmpSize);
-			if (m_resourceDF == nullptr) {
+			if (m_resourceDF == null) {
 				EWOL_ERROR("Can not get Image resource DF");
 			}
 		}
 	}
-	if (    m_resource == nullptr
-	     && m_resourceDF == nullptr
-	     && m_resourceImage == nullptr) {
-		if (resource != nullptr) {
+	if (    m_resource == null
+	     && m_resourceDF == null
+	     && m_resourceImage == null) {
+		if (resource != null) {
 			EWOL_WARNING("Retrive previous resource");
 			m_resource = resource;
 		}
-		if (resourceDF != nullptr) {
+		if (resourceDF != null) {
 			EWOL_WARNING("Retrive previous resource (DF)");
 			m_resourceDF = resourceDF;
 		}
-		if (resourceTex != nullptr) {
+		if (resourceTex != null) {
 			EWOL_WARNING("Retrive previous resource (image)");
 			m_resourceImage = resourceTex;
 		}
@@ -328,24 +328,24 @@ void ewol::compositing::Image::setSource(egami::Image _image) {
 }
 
 bool ewol::compositing::Image::hasSources() {
-	return    m_resource != nullptr
-	       || m_resourceDF != nullptr;
+	return    m_resource != null
+	       || m_resourceDF != null;
 }
 
 
 vec2 ewol::compositing::Image::getRealSize() {
-	if (    m_resource == nullptr
-	     && m_resourceDF == nullptr
-	     && m_resourceImage == nullptr) {
+	if (    m_resource == null
+	     && m_resourceDF == null
+	     && m_resourceImage == null) {
 		return vec2(0,0);
 	}
-	if (m_resource != nullptr) {
+	if (m_resource != null) {
 		return m_resource->getRealSize();
 	}
-	if (m_resourceDF != nullptr) {
+	if (m_resourceDF != null) {
 		return m_resourceDF->getRealSize();
 	}
-	if (m_resourceImage != nullptr) {
+	if (m_resourceImage != null) {
 		return m_resourceImage->getUsableSize();
 	}
 	return vec2(0,0);
diff --git a/ewol/compositing/Shaper.cpp b/ewol/compositing/Shaper.cpp
index e9212c98..b300d39e 100644
--- a/ewol/compositing/Shaper.cpp
+++ b/ewol/compositing/Shaper.cpp
@@ -17,21 +17,21 @@ const int32_t ewol::compositing::Shaper::m_vboIdPos(1);
 
 ewol::compositing::Shaper::Shaper(const etk::String& _shaperName) :
   m_name(_shaperName),
-  m_config(nullptr),
+  m_config(null),
   m_confIdMode(-1),
   m_confIdDisplayOutside(-1),
   m_confIdChangeTime(-1),
   m_confProgramFile(-1),
   m_confColorFile(-1),
   m_confImageFile(-1),
-  m_GLprogram(nullptr),
+  m_GLprogram(null),
   m_GLPosition(-1),
   m_GLMatrix(-1),
   m_GLStateActivate(-1),
   m_GLStateOld(-1),
   m_GLStateNew(-1),
   m_GLStateTransition(-1),
-  m_resourceTexture(nullptr),
+  m_resourceTexture(null),
   m_nextStatusRequested(-1),
   m_propertyOrigin(0,0),
   m_propertySize(0,0),
@@ -49,7 +49,7 @@ ewol::compositing::Shaper::Shaper(const etk::String& _shaperName) :
 	}
 	// Create the VBO:
 	m_VBO = gale::resource::VirtualBufferObject::create(NB_VBO);
-	if (m_VBO == nullptr) {
+	if (m_VBO == null) {
 		EWOL_ERROR("can not instanciate VBO ...");
 		return;
 	}
@@ -88,7 +88,7 @@ void ewol::compositing::Shaper::loadProgram() {
 		return;
 	}
 	m_config = ewol::resource::ConfigFile::create(m_name);
-	if (m_config != nullptr) {
+	if (m_config != null) {
 		m_confIdMode = m_config->request("mode");
 		m_confIdDisplayOutside = m_config->request("display-outside");
 		m_confIdPaddingOut[shaperPosLeft]   = m_config->request("padding-out-left");
@@ -122,7 +122,7 @@ void ewol::compositing::Shaper::loadProgram() {
 		// get the shader resource :
 		m_GLPosition = 0;
 		m_GLprogram = gale::resource::Program::create(tmpFilename);
-		if (m_GLprogram != nullptr) {
+		if (m_GLprogram != null) {
 			m_GLPosition        = m_GLprogram->getAttribute("EW_coord2d");
 			m_GLMatrix          = m_GLprogram->getUniform("EW_MatrixTransformation");
 			// Widget property  == > for the Vertex shader
@@ -162,8 +162,8 @@ void ewol::compositing::Shaper::loadProgram() {
 			EWOL_DEBUG("Shaper try load colorFile : '" << tmpFilename << "'");
 		}
 		m_colorProperty = ewol::resource::ColorFile::create(tmpFilename);
-		if (    m_GLprogram != nullptr
-		     && m_colorProperty != nullptr) {
+		if (    m_GLprogram != null
+		     && m_colorProperty != null) {
 			etk::Vector<etk::String> listColor = m_colorProperty->getColors();
 			for (auto tmpColor : listColor) {
 				int32_t glId = m_GLprogram->getUniform(tmpColor);
@@ -175,11 +175,11 @@ void ewol::compositing::Shaper::loadProgram() {
 }
 
 void ewol::compositing::Shaper::draw(bool _disableDepthTest) {
-	if (m_config == nullptr) {
+	if (m_config == null) {
 		// this is a normale case ... the user can choice to have no config basic file ...
 		return;
 	}
-	if (m_GLprogram == nullptr) {
+	if (m_GLprogram == null) {
 		EWOL_ERROR("No shader ...");
 		return;
 	}
@@ -203,7 +203,7 @@ void ewol::compositing::Shaper::draw(bool _disableDepthTest) {
 	for (auto element : m_listAssiciatedId) {
 		m_GLprogram->uniform(element.x(), m_colorProperty->get(element.y()));
 	}
-	if (m_resourceTexture != nullptr) {
+	if (m_resourceTexture != null) {
 		// TextureID
 		m_GLprogram->setTexture0(m_GLtexID, m_resourceTexture->getRendererId());
 	}
@@ -272,7 +272,7 @@ bool ewol::compositing::Shaper::periodicCall(const ewol::event::Time& _event) {
 			}
 		}
 		float timeRelativity = 0.0f;
-		if (m_config != nullptr) {
+		if (m_config != null) {
 			timeRelativity = m_config->getNumber(m_confIdChangeTime) / 1000.0;
 		}
 		m_stateTransition += _event.getDeltaCall() / timeRelativity;
@@ -493,7 +493,7 @@ void ewol::compositing::Shaper::setShape(const vec2& _origin, const vec2& _size,
 	*/
 	int32_t mode = 0;
 	bool displayOutside = false;
-	if (m_config != nullptr) {
+	if (m_config != null) {
 		mode = m_config->getNumber(m_confIdMode);
 		displayOutside = m_config->getBoolean(m_confIdDisplayOutside);
 	}
@@ -595,7 +595,7 @@ ewol::Padding ewol::compositing::Shaper::getPadding() {
 
 ewol::Padding ewol::compositing::Shaper::getPaddingIn() {
 	ewol::Padding padding(0,0,0,0);
-	if (m_config != nullptr) {
+	if (m_config != null) {
 		padding.setValue(m_config->getNumber(m_confIdPaddingIn[shaperPosLeft]),
 		                 m_config->getNumber(m_confIdPaddingIn[shaperPosTop]),
 		                 m_config->getNumber(m_confIdPaddingIn[shaperPosRight]),
@@ -606,7 +606,7 @@ ewol::Padding ewol::compositing::Shaper::getPaddingIn() {
 
 ewol::Padding ewol::compositing::Shaper::getPaddingOut() {
 	ewol::Padding padding(0,0,0,0);
-	if (m_config != nullptr) {
+	if (m_config != null) {
 		padding.setValue(m_config->getNumber(m_confIdPaddingOut[shaperPosLeft]),
 		                 m_config->getNumber(m_confIdPaddingOut[shaperPosTop]),
 		                 m_config->getNumber(m_confIdPaddingOut[shaperPosRight]),
@@ -617,7 +617,7 @@ ewol::Padding ewol::compositing::Shaper::getPaddingOut() {
 
 ewol::Padding ewol::compositing::Shaper::getBorder() {
 	ewol::Padding padding(0,0,0,0);
-	if (m_config != nullptr) {
+	if (m_config != null) {
 		padding.setValue(m_config->getNumber(m_confIdBorder[shaperPosLeft]),
 		                 m_config->getNumber(m_confIdBorder[shaperPosTop]),
 		                 m_config->getNumber(m_confIdBorder[shaperPosRight]),
@@ -634,30 +634,30 @@ void ewol::compositing::Shaper::setSource(const etk::String& _newFile) {
 }
 
 bool ewol::compositing::Shaper::hasSources() {
-	return m_GLprogram!=nullptr;
+	return m_GLprogram!=null;
 }
 
 
 const etk::Color<float>& ewol::compositing::Shaper::getColor(int32_t _id) {
 	static const etk::Color<float> errorValue(0,0,0,0);
-	if (m_colorProperty == nullptr) {
-		EWOL_WARNING("nullptr of m_colorProperty ==> return #0000 for id " << _id);
+	if (m_colorProperty == null) {
+		EWOL_WARNING("null of m_colorProperty ==> return #0000 for id " << _id);
 		return errorValue;
 	}
 	return m_colorProperty->get(_id);
 }
 
 int32_t ewol::compositing::Shaper::requestColor(const etk::String& _name) {
-	if (m_colorProperty == nullptr) {
-		EWOL_WARNING("nullptr of m_colorProperty ==> return -1 for name " << _name);
+	if (m_colorProperty == null) {
+		EWOL_WARNING("null of m_colorProperty ==> return -1 for name " << _name);
 		return -1;
 	}
 	return m_colorProperty->request(_name);
 }
 
 int32_t ewol::compositing::Shaper::requestConfig(const etk::String& _name) {
-	if (m_config == nullptr) {
-		EWOL_WARNING("nullptr of m_config ==> return -1 for name " << _name);
+	if (m_config == null) {
+		EWOL_WARNING("null of m_config ==> return -1 for name " << _name);
 		return -1;
 	}
 	return m_config->request(_name);
@@ -665,8 +665,8 @@ int32_t ewol::compositing::Shaper::requestConfig(const etk::String& _name) {
 
 double ewol::compositing::Shaper::getConfigNumber(int32_t _id) {
 	if (    _id == -1
-	     || m_config == nullptr) {
-		EWOL_WARNING("nullptr of m_config ==> return 0.0 for id " << _id);
+	     || m_config == null) {
+		EWOL_WARNING("null of m_config ==> return 0.0 for id " << _id);
 		return 0.0;
 	}
 	return m_config->getNumber(_id);
diff --git a/ewol/compositing/Text.cpp b/ewol/compositing/Text.cpp
index aa5ab80e..0b912e5c 100644
--- a/ewol/compositing/Text.cpp
+++ b/ewol/compositing/Text.cpp
@@ -13,7 +13,7 @@
 ETK_DECLARE_TYPE(ewol::compositing::Text);
 
 ewol::compositing::Text::Text(const etk::String& _fontName, int32_t _fontSize) :
-  m_font(nullptr) {
+  m_font(null) {
 	setFont(_fontName, _fontSize);
 }
 
@@ -27,16 +27,16 @@ void ewol::compositing::Text::drawMT(const mat4& _transformationMatrix, bool _en
 	m_vectorialDraw.draw();
 	
 	if (    m_VBO->bufferSize(m_vboIdCoord) <= 0
-	     || m_font == nullptr) {
+	     || m_font == null) {
 		// TODO : set it back ...
 		//EWOL_WARNING("Nothink to draw...");
 		return;
 	}
-	if (m_font == nullptr) {
+	if (m_font == null) {
 		EWOL_WARNING("no font...");
 		return;
 	}
-	if (m_GLprogram == nullptr) {
+	if (m_GLprogram == null) {
 		EWOL_ERROR("No shader ...");
 		return;
 	}
@@ -72,15 +72,15 @@ void ewol::compositing::Text::drawD(bool _disableDepthTest) {
 	m_vectorialDraw.draw(_disableDepthTest);
 	
 	if (    m_VBO->bufferSize(m_vboIdCoord) <= 0
-	     || m_font == nullptr) {
+	     || m_font == null) {
 		//EWOL_WARNING("Nothink to draw...");
 		return;
 	}
-	if (m_font == nullptr) {
+	if (m_font == null) {
 		EWOL_WARNING("no font...");
 		return;
 	}
-	if (m_GLprogram == nullptr) {
+	if (m_GLprogram == null) {
 		EWOL_ERROR("No shader ...");
 		return;
 	}
@@ -104,23 +104,23 @@ void ewol::compositing::Text::drawD(bool _disableDepthTest) {
 }
 
 float ewol::compositing::Text::getSize() {
-	if (m_font == nullptr) {
+	if (m_font == null) {
 		EWOL_WARNING("no font...");
 		return 1.0f;
 	}
 	return m_font->getFontSize();
 }
 float ewol::compositing::Text::getHeight() {
-	if (m_font == nullptr) {
+	if (m_font == null) {
 		EWOL_WARNING("no font...");
 		return 10.0f;
 	}
 	return m_font->getHeight(m_mode);
 }
 ewol::GlyphProperty * ewol::compositing::Text::getGlyphPointer(char32_t _charcode) {
-	if (m_font == nullptr) {
+	if (m_font == null) {
 		EWOL_WARNING("no font...");
-		return nullptr;
+		return null;
 	}
 	return m_font->getGlyphPointer(_charcode, m_mode);
 }
@@ -128,7 +128,7 @@ ewol::GlyphProperty * ewol::compositing::Text::getGlyphPointer(char32_t _charcod
 void ewol::compositing::Text::setFontSize(int32_t _fontSize) {
 	// get old size
 	etk::String fontName = "";
-	if (m_font != nullptr) {
+	if (m_font != null) {
 		fontName = m_font->getName();
 		// Remove the :XX for the size ...
 		size_t pos = fontName.rfind(':');
@@ -140,7 +140,7 @@ void ewol::compositing::Text::setFontSize(int32_t _fontSize) {
 void ewol::compositing::Text::setFontName(const etk::String& _fontName) {
 	// get old size
 	int32_t fontSize = -1;
-	if (m_font != nullptr) {
+	if (m_font != null) {
 		fontSize = m_font->getFontSize();
 	}
 	setFont(_fontName, fontSize);
@@ -161,14 +161,14 @@ void ewol::compositing::Text::setFont(etk::String _fontName, int32_t _fontSize)
 	EWOL_VERBOSE("plop : " << _fontName << " size=" << _fontSize << " result :" << _fontName);
 	// link to new one
 	m_font = ewol::resource::TexturedFont::create(_fontName);
-	if (m_font == nullptr) {
+	if (m_font == null) {
 		EWOL_ERROR("Can not get font resource");
 		m_font = previousFont;
 	}
 }
 
 void ewol::compositing::Text::setFontMode(enum ewol::font::mode _mode) {
-	if (m_font != nullptr) {
+	if (m_font != null) {
 		m_mode = m_font->getWrappingMode(_mode);
 	}
 }
@@ -176,7 +176,7 @@ void ewol::compositing::Text::setFontMode(enum ewol::font::mode _mode) {
 void ewol::compositing::Text::printChar(const char32_t& _charcode) {
 	// get a pointer on the glyph property : 
 	ewol::GlyphProperty* myGlyph = getGlyphPointer(_charcode);
-	if (nullptr == myGlyph) {
+	if (null == myGlyph) {
 		EWOL_ERROR(" font does not really existed ...");
 		return;
 	}
@@ -346,8 +346,8 @@ vec3 ewol::compositing::Text::calculateSizeChar(const char32_t& _charcode) {
 	// get a pointer on the glyph property : 
 	ewol::GlyphProperty * myGlyph = getGlyphPointer(_charcode);
 	int32_t fontHeigh = getHeight();
-	if (myGlyph == nullptr) {
-		if (m_font == nullptr) {
+	if (myGlyph == null) {
+		if (m_font == null) {
 			EWOL_WARNING("no Glyph... in no font");
 		} else {
 			EWOL_WARNING("no Glyph... in font : " << m_font->getName());
diff --git a/ewol/compositing/TextBase.cpp b/ewol/compositing/TextBase.cpp
index f3f6fe54..1869c9e3 100644
--- a/ewol/compositing/TextBase.cpp
+++ b/ewol/compositing/TextBase.cpp
@@ -35,7 +35,7 @@ ewol::compositing::TextBase::TextBase(const etk::String& _shaderName, bool _load
   m_startTextpos(0),
   m_stopTextPos(0),
   m_alignement(alignDisable),
-  m_GLprogram(nullptr),
+  m_GLprogram(null),
   m_GLPosition(-1),
   m_GLMatrix(-1),
   m_GLColor(-1),
@@ -48,7 +48,7 @@ ewol::compositing::TextBase::TextBase(const etk::String& _shaderName, bool _load
 	}
 	// Create the VBO:
 	m_VBO = gale::resource::VirtualBufferObject::create(NB_VBO);
-	if (m_VBO == nullptr) {
+	if (m_VBO == null) {
 		EWOL_ERROR("can not instanciate VBO ...");
 		return;
 	}
@@ -66,7 +66,7 @@ void ewol::compositing::TextBase::loadProgram(const etk::String& _shaderName) {
 	m_GLPosition = 0;
 	ememory::SharedPtr<gale::resource::Program> old = m_GLprogram;
 	m_GLprogram = gale::resource::Program::create(_shaderName);
-	if (m_GLprogram != nullptr) {
+	if (m_GLprogram != null) {
 		m_GLPosition   = m_GLprogram->getAttribute("EW_coord3d");
 		m_GLColor      = m_GLprogram->getAttribute("EW_color");
 		m_GLtexture    = m_GLprogram->getAttribute("EW_texture2d");
@@ -77,7 +77,7 @@ void ewol::compositing::TextBase::loadProgram(const etk::String& _shaderName) {
 	} else {
 		EWOL_ERROR("Can not load the program => create previous one...");
 		m_GLprogram = old;
-		old = nullptr;
+		old = null;
 	}
 }
 
diff --git a/ewol/compositing/TextDF.cpp b/ewol/compositing/TextDF.cpp
index 344a09e1..44a74759 100644
--- a/ewol/compositing/TextDF.cpp
+++ b/ewol/compositing/TextDF.cpp
@@ -13,7 +13,7 @@ ETK_DECLARE_TYPE(ewol::compositing::TextDF);
 
 ewol::compositing::TextDF::TextDF(const etk::String& _fontName, int32_t _fontSize) :
   ewol::compositing::TextBase("", false),
-  m_fontDF(nullptr),
+  m_fontDF(null),
   m_GLglyphLevel(-1),
   m_size(12.0) {
 	setFont(_fontName, _fontSize);
@@ -26,7 +26,7 @@ ewol::compositing::TextDF::~TextDF() {
 
 void ewol::compositing::TextDF::updateSizeToRender(const vec2& _size) {
 	float minSize = etk::min(_size.x(), _size.y());
-	if (m_fontDF != nullptr) {
+	if (m_fontDF != null) {
 		setFontSize(m_fontDF->getSize(minSize));
 	}
 }
@@ -35,15 +35,15 @@ void ewol::compositing::TextDF::drawMT(const mat4& _transformationMatrix, bool _
 	// draw BG in any case:
 	m_vectorialDraw.draw();
 	if (    m_VBO->bufferSize(m_vboIdCoord) <= 0
-	     || m_fontDF == nullptr) {
+	     || m_fontDF == null) {
 		//EWOL_WARNING("Nothink to draw...");
 		return;
 	}
-	if (m_fontDF == nullptr) {
+	if (m_fontDF == null) {
 		EWOL_WARNING("no font...");
 		return;
 	}
-	if (m_GLprogram == nullptr) {
+	if (m_GLprogram == null) {
 		EWOL_ERROR("No shader ...");
 		return;
 	}
@@ -78,16 +78,16 @@ void ewol::compositing::TextDF::drawD(bool _disableDepthTest) {
 	m_vectorialDraw.draw();
 	
 	if (    m_VBO->bufferSize(m_vboIdCoord) <= 0
-	     || m_fontDF == nullptr) {
+	     || m_fontDF == null) {
 		// TODO : Set it back
 		//EWOL_WARNING("Nothink to draw...");
 		return;
 	}
-	if (m_fontDF == nullptr) {
+	if (m_fontDF == null) {
 		EWOL_WARNING("no font...");
 		return;
 	}
-	if (m_GLprogram == nullptr) {
+	if (m_GLprogram == null) {
 		EWOL_ERROR("No shader ...");
 		return;
 	}
@@ -110,14 +110,14 @@ void ewol::compositing::TextDF::drawD(bool _disableDepthTest) {
 
 void ewol::compositing::TextDF::loadProgram(const etk::String& _shaderName) {
 	ewol::compositing::TextBase::loadProgram(_shaderName);
-	if (m_GLprogram != nullptr) {
+	if (m_GLprogram != null) {
 		m_GLglyphLevel = m_GLprogram->getAttribute("EW_glyphLevel");
 	}
 }
 
 
 float ewol::compositing::TextDF::getHeight() {
-	if (m_fontDF == nullptr) {
+	if (m_fontDF == null) {
 		EWOL_WARNING("no font...");
 		return 1;
 	}
@@ -125,9 +125,9 @@ float ewol::compositing::TextDF::getHeight() {
 }
 
 ewol::GlyphProperty * ewol::compositing::TextDF::getGlyphPointer(char32_t _charcode) {
-	if (m_fontDF == nullptr) {
+	if (m_fontDF == null) {
 		EWOL_WARNING("no font...");
-		return nullptr;
+		return null;
 	}
 	return m_fontDF->getGlyphPointer(_charcode);
 }
@@ -155,7 +155,7 @@ void ewol::compositing::TextDF::setFontName(const etk::String& _fontName) {
 	EWOL_VERBOSE("Set font name: '" << fontName << "'");
 	// link to new one
 	m_fontDF = ewol::resource::DistanceFieldFont::create(fontName);
-	if (m_fontDF == nullptr) {
+	if (m_fontDF == null) {
 		EWOL_ERROR("Can not get find resource");
 		m_fontDF = previousFont;
 	}
@@ -177,7 +177,7 @@ void ewol::compositing::TextDF::setFontMode(enum ewol::font::mode _mode) {
 void ewol::compositing::TextDF::printChar(const char32_t& _charcode) {
 	// get a pointer on the glyph property : 
 	ewol::GlyphProperty* myGlyph = getGlyphPointer(_charcode);
-	if (nullptr == myGlyph) {
+	if (null == myGlyph) {
 		EWOL_ERROR(" font does not really existed ...");
 		return;
 	}
diff --git a/ewol/context/Context.cpp b/ewol/context/Context.cpp
index da0ec6f5..d888b1b0 100644
--- a/ewol/context/Context.cpp
+++ b/ewol/context/Context.cpp
@@ -32,11 +32,11 @@
 #include <etk/typeInfo.hpp>
 ETK_DECLARE_TYPE(ewol::Context);
 
-static ewol::Context* l_curentInterface=nullptr;
+static ewol::Context* l_curentInterface=null;
 ewol::Context& ewol::getContext() {
 	gale::Context& context = gale::getContext();
 	ememory::SharedPtr<gale::Application> appl = context.getApplication();
-	if (appl == nullptr) {
+	if (appl == null) {
 		EWOL_CRITICAL("[CRITICAL] try acces at an empty GALE application (can not get Context)");
 		// ???
 	}
@@ -104,7 +104,7 @@ void ewol::Context::onCreate(gale::Context& _context) {
 	#endif
 	*/
 	ememory::SharedPtr<ewol::context::Application> appl = m_application;
-	if (appl == nullptr) {
+	if (appl == null) {
 		EWOL_ERROR(" == > Create without application");
 		return;
 	}
@@ -115,7 +115,7 @@ void ewol::Context::onCreate(gale::Context& _context) {
 void ewol::Context::onStart(gale::Context& _context) {
 	EWOL_INFO(" == > Ewol system start (BEGIN)");
 	ememory::SharedPtr<ewol::context::Application> appl = m_application;
-	if (appl == nullptr) {
+	if (appl == null) {
 		// TODO : Request exit of the application .... with error ...
 		return;
 	}
@@ -126,7 +126,7 @@ void ewol::Context::onStart(gale::Context& _context) {
 void ewol::Context::onResume(gale::Context& _context) {
 	EWOL_INFO(" == > Ewol system resume (BEGIN)");
 	ememory::SharedPtr<ewol::context::Application> appl = m_application;
-	if (appl == nullptr) {
+	if (appl == null) {
 		return;
 	}
 	appl->onResume(*this);
@@ -137,7 +137,7 @@ void ewol::Context::onRegenerateDisplay(gale::Context& _context) {
 	//EWOL_INFO("REGENERATE_DISPLAY");
 	// check if the user selected a windows
 	ewol::widget::WindowsShared window = m_windowsCurrent;
-	if (window == nullptr) {
+	if (window == null) {
 		EWOL_DEBUG("No windows ...");
 		return;
 	}
@@ -155,7 +155,7 @@ void ewol::Context::onDraw(gale::Context& _context) {
 	m_objectManager.cleanInternalRemoved();
 	// real draw...
 	ewol::widget::WindowsShared window = m_windowsCurrent;
-	if (window == nullptr) {
+	if (window == null) {
 		return;
 	}
 	window->sysDraw();
@@ -164,7 +164,7 @@ void ewol::Context::onDraw(gale::Context& _context) {
 void ewol::Context::onPause(gale::Context& _context) {
 	EWOL_INFO(" == > Ewol system pause (BEGIN)");
 	ememory::SharedPtr<ewol::context::Application> appl = m_application;
-	if (appl == nullptr) {
+	if (appl == null) {
 		return;
 	}
 	appl->onPause(*this);
@@ -174,7 +174,7 @@ void ewol::Context::onPause(gale::Context& _context) {
 void ewol::Context::onStop(gale::Context& _context) {
 	EWOL_INFO(" == > Ewol system stop (BEGIN)");
 	ememory::SharedPtr<ewol::context::Application> appl = m_application;
-	if (appl == nullptr) {
+	if (appl == null) {
 		return;
 	}
 	appl->onStop(*this);
@@ -188,7 +188,7 @@ void ewol::Context::onDestroy(gale::Context& _context) {
 	// clean all widget and sub widget with their resources:
 	m_objectManager.cleanInternalRemoved();
 	ememory::SharedPtr<ewol::context::Application> appl = m_application;
-	if (appl != nullptr) {
+	if (appl != null) {
 		// call application to uninit
 		appl->onDestroy(*this);
 		m_application.reset();
@@ -205,7 +205,7 @@ void ewol::Context::onDestroy(gale::Context& _context) {
 void ewol::Context::onKillDemand(gale::Context& _context) {
 	EWOL_INFO(" == > User demand a destroy (BEGIN)");
 	ememory::SharedPtr<ewol::context::Application> appl = m_application;
-	if (appl == nullptr) {
+	if (appl == null) {
 		exit(0);
 		return;
 	}
@@ -243,7 +243,7 @@ void ewol::Context::onKeyboard(const gale::key::Special& _special,
 	EWOL_VERBOSE("event {" << _special << "} " << _type << " " << _value << " " << _state);
 	// store the keyboard special key status for mouse event...
 	m_input.setLastKeyboardSpecial(_special);
-	if (m_windowsCurrent == nullptr) {
+	if (m_windowsCurrent == null) {
 		// No windows ...
 		return;
 	}
@@ -259,7 +259,7 @@ void ewol::Context::onKeyboard(const gale::key::Special& _special,
 	}
 	// get the current focused Widget :
 	ewol::WidgetShared tmpWidget = m_widgetManager.focusGet();
-	if (tmpWidget == nullptr) {
+	if (tmpWidget == null) {
 		// no Widget ...
 		return;
 	}
@@ -311,7 +311,7 @@ void ewol::Context::processEvents() {
 
 void ewol::Context::onClipboardEvent(enum gale::context::clipBoard::clipboardListe _clipboardId) {
 	ewol::WidgetShared tmpWidget = m_widgetManager.focusGet();
-	if (tmpWidget != nullptr) {
+	if (tmpWidget != null) {
 		tmpWidget->onEventClipboard(_clipboardId);
 	}
 }
@@ -322,9 +322,9 @@ ewol::Context::Context(ewol::context::Application* _application) :
   m_application(_application),
   m_objectManager(*this),
   m_input(*this),
-  m_windowsCurrent(nullptr),
+  m_windowsCurrent(null),
   m_initStepId(0) {
-	if (m_application == nullptr) {
+	if (m_application == null) {
 		EWOL_CRITICAL("Can not start context with no Application ==> rtfm ...");
 	}
 }
@@ -349,14 +349,14 @@ void ewol::Context::resetIOEvent() {
 void ewol::Context::setWindows(const ewol::widget::WindowsShared& _windows) {
 	EWOL_INFO("set New windows");
 	// remove current focus :
-	m_widgetManager.focusSetDefault(nullptr);
+	m_widgetManager.focusSetDefault(null);
 	m_widgetManager.focusRelease();
 	// set the new pointer as windows system
 	m_windowsCurrent = _windows;
 	// set the new default focus:
 	m_widgetManager.focusSetDefault(_windows);
 	// display the title of the Windows:
-	if (m_windowsCurrent != nullptr) {
+	if (m_windowsCurrent != null) {
 		setTitle(m_windowsCurrent->propertyTitle.get());
 	}
 	// request all the widget redrawing
@@ -372,7 +372,7 @@ void ewol::Context::onResize(const ivec2& _size) {
 }
 
 void ewol::Context::forceRedrawAll() {
-	if (m_windowsCurrent == nullptr) {
+	if (m_windowsCurrent == null) {
 		return;
 	}
 	ivec2 size = getSize();
diff --git a/ewol/context/InputManager.cpp b/ewol/context/InputManager.cpp
index 04fd517f..0e57cd82 100644
--- a/ewol/context/InputManager.cpp
+++ b/ewol/context/InputManager.cpp
@@ -40,7 +40,7 @@ bool ewol::context::InputManager::localEventInput(enum gale::key::type _type,
                                                   int32_t _IdInput,
                                                   enum gale::key::status _status,
                                                   vec2 _pos) {
-	if (_destWidget != nullptr) {
+	if (_destWidget != null) {
 		if (    _type == gale::key::type::mouse
 		     || _type == gale::key::type::finger) {
 			// create the system Event :
@@ -57,7 +57,7 @@ bool ewol::context::InputManager::localEventInput(enum gale::key::type _type,
 void ewol::context::InputManager::abortElement(InputPoperty *_eventTable,
                                                int32_t _idInput,
                                                enum gale::key::type _type) {
-	if (_eventTable == nullptr) {
+	if (_eventTable == null) {
 		return;
 	}
 	if (_eventTable[_idInput].isUsed == true) {
@@ -71,7 +71,7 @@ void ewol::context::InputManager::abortElement(InputPoperty *_eventTable,
 
 void ewol::context::InputManager::cleanElement(InputPoperty *_eventTable,
                                                int32_t _idInput) {
-	if (_eventTable == nullptr) {
+	if (_eventTable == null) {
 		return;
 	}
 	//EWOL_INFO("CleanElement[" << idInput << "] = @" << (int64_t)eventTable);
@@ -89,8 +89,8 @@ void ewol::context::InputManager::cleanElement(InputPoperty *_eventTable,
 }
 
 void ewol::context::InputManager::transfertEvent(ewol::WidgetShared _source, ewol::WidgetShared _destination) {
-	if(    _source == nullptr
-	    || _destination == nullptr) {
+	if(    _source == null
+	    || _destination == null) {
 		// prevent errors ...
 		return;
 	}
@@ -121,7 +121,7 @@ void ewol::context::InputManager::transfertEvent(ewol::WidgetShared _source, ewo
 }
 
 void ewol::context::InputManager::grabPointer(ewol::WidgetShared _widget) {
-	if(_widget == nullptr) {
+	if(_widget == null) {
 		return;
 	}
 	m_grabWidget = _widget;
@@ -194,7 +194,7 @@ void ewol::context::InputManager::motion(enum gale::key::type _type,
 		// reject pointer  == > out of IDs...
 		return;
 	}
-	InputPoperty *eventTable = nullptr;
+	InputPoperty *eventTable = null;
 	if (_type == gale::key::type::mouse) {
 		eventTable = m_eventMouseSaved;
 	} else if (_type == gale::key::type::finger) {
@@ -215,11 +215,11 @@ void ewol::context::InputManager::motion(enum gale::key::type _type,
 		// this event is all time on the good widget ... and manage the enter and leave ...
 		// NOTE : the "layer widget" force us to get the widget at the specific position all the time :
 		ewol::WidgetShared tmpWidget;
-		if (m_grabWidget.lock() != nullptr) {
+		if (m_grabWidget.lock() != null) {
 			// grab all events ...
 			tmpWidget = m_grabWidget.lock();
 		} else {
-			if (tmpWindows != nullptr) {
+			if (tmpWindows != null) {
 				tmpWidget = tmpWindows->getWidgetAtPos(_pos);
 			}
 		}
@@ -243,7 +243,7 @@ void ewol::context::InputManager::motion(enum gale::key::type _type,
 			eventTable[_pointerID].isInside = true;
 			// get destination widget :
 			eventTable[_pointerID].curentWidgetEvent = tmpWidget;
-			if (tmpWidget == nullptr) {
+			if (tmpWidget == null) {
 				eventTable[_pointerID].isInside = false;
 			} else {
 				eventTable[_pointerID].origin = tmpWidget->getOrigin();
@@ -325,7 +325,7 @@ void ewol::context::InputManager::state(enum gale::key::type _type,
 	}
 	EVENT_DEBUG("event pointerId=" << _pointerID);
 	// convert position in open-GL coordonates ...
-	InputPoperty *eventTable = nullptr;
+	InputPoperty *eventTable = null;
 	InputLimit   localLimit;
 	if (_type == gale::key::type::mouse) {
 		eventTable = m_eventMouseSaved;
@@ -383,14 +383,14 @@ void ewol::context::InputManager::state(enum gale::key::type _type,
 			eventTable[_pointerID].isInside = true;
 			ewol::WidgetShared tmpWidget = m_grabWidget.lock();
 			// get destination widget :
-			if(tmpWindows != nullptr) {
-				if (    tmpWidget != nullptr
+			if(tmpWindows != null) {
+				if (    tmpWidget != null
 				     && _type == gale::key::type::mouse) {
 					eventTable[_pointerID].curentWidgetEvent = tmpWidget;
 				} else {
 					tmpWidget = tmpWindows->getWidgetAtPos(_pos);
 					eventTable[_pointerID].curentWidgetEvent = tmpWidget;
-					if (tmpWidget != nullptr) {
+					if (tmpWidget != null) {
 						EVENT_DEBUG("Get widget at pos=" << _pos << " type: " << tmpWidget->getObjectType());
 					} else {
 						EVENT_DEBUG("Get widget at pos=" << _pos << " NO WIDGET");
@@ -400,7 +400,7 @@ void ewol::context::InputManager::state(enum gale::key::type _type,
 				eventTable[_pointerID].curentWidgetEvent.reset();
 			}
 			tmpWidget = eventTable[_pointerID].curentWidgetEvent.lock();
-			if (tmpWidget != nullptr) {
+			if (tmpWidget != null) {
 				eventTable[_pointerID].origin = tmpWidget->getOrigin();
 				eventTable[_pointerID].size = tmpWidget->getSize();
 				eventTable[_pointerID].destinationInputId = localGetDestinationId(_type, tmpWidget, _pointerID);
@@ -430,7 +430,7 @@ void ewol::context::InputManager::state(enum gale::key::type _type,
 			eventTable[_pointerID].isUsed = false;
 			// revove the widget ...
 			eventTable[_pointerID].curentWidgetEvent.reset();
-		} else if (tmpWidget == nullptr) {
+		} else if (tmpWidget == null) {
 			// The widget has been removed:
 			EVENT_DEBUG("    Object Removed ...");
 			// Mark it un-used :
@@ -457,14 +457,14 @@ void ewol::context::InputManager::state(enum gale::key::type _type,
 				// save start time
 				eventTable[_pointerID].lastTimeEvent = currentTime;
 				int32_t nbClickMax = 0;
-				if(tmpWidget != nullptr) {
+				if(tmpWidget != null) {
 					nbClickMax = tmpWidget->getMouseLimit();
 					if (nbClickMax>5) {
 						nbClickMax = 5;
 					}
 				}
 				// in grab mode the single to quinte event are not generated ....
-				if(    (    m_grabWidget.lock() == nullptr
+				if(    (    m_grabWidget.lock() == null
 				         || _type != gale::key::type::mouse )
 				    && eventTable[_pointerID].nbClickEvent < nbClickMax) {
 					// generate event SINGLE :
diff --git a/ewol/ewol.hpp b/ewol/ewol.hpp
index 1524ec02..1e5ba30f 100644
--- a/ewol/ewol.hpp
+++ b/ewol/ewol.hpp
@@ -21,7 +21,7 @@ namespace ewol {
 	 * @param[in] _argv Standard argv
 	 * @return normal error int for the application error management
 	 */
-	int32_t run(ewol::context::Application* _application, int32_t _argc = 0, const char* _argv[] = nullptr);
+	int32_t run(ewol::context::Application* _application, int32_t _argc = 0, const char* _argv[] = null);
 	/**
 	 * @brief get EWOL version
 	 * @return The string that describe ewol version
diff --git a/ewol/object/Manager.cpp b/ewol/object/Manager.cpp
index 53663996..bc6daddd 100644
--- a/ewol/object/Manager.cpp
+++ b/ewol/object/Manager.cpp
@@ -43,7 +43,7 @@ void ewol::object::Manager::displayListObject() {
 	EWOL_INFO("List loaded object : ");
 	for (auto &it : m_eObjectList) {
 		ewol::ObjectShared element = it.lock();
-		if (element != nullptr) {
+		if (element != null) {
 			EWOL_INFO("  [" << element->getId() << "] ref=" << element.useCount()-1 << " name='" << element->propertyName.get() << "' type=" << element->getObjectType());
 		}
 	}
@@ -58,7 +58,7 @@ void ewol::object::Manager::unInit() {
 	}
 	for (auto &it : m_eObjectList) {
 		ewol::ObjectShared element = it.lock();
-		if (element != nullptr) {
+		if (element != null) {
 			//it->removeObject();
 		}
 	}
@@ -70,7 +70,7 @@ void ewol::object::Manager::unInit() {
 
 void ewol::object::Manager::add(const ewol::ObjectShared& _object) {
 	ethread::RecursiveLock lock(m_mutex);
-	if (_object == nullptr) {
+	if (_object == null) {
 		EWOL_ERROR("try to add an inexistant Object in manager");
 	}
 	m_eObjectList.pushBack(_object);
@@ -102,16 +102,16 @@ void ewol::object::Manager::cleanInternalRemoved() {
 ewol::ObjectShared ewol::object::Manager::get(const etk::String& _name) {
 	ethread::RecursiveLock lock(m_mutex);
 	if (_name == "") {
-		return nullptr;
+		return null;
 	}
 	for (auto &it : m_eObjectList) {
 		ewol::ObjectShared element = it.lock();
-		if (    element != nullptr
+		if (    element != null
 		     && element->propertyName.get() == _name) {
 			return element;
 		}
 	}
-	return nullptr;
+	return null;
 }
 
 
diff --git a/ewol/object/Manager.hpp b/ewol/object/Manager.hpp
index 0eb2ce1b..14c755f5 100644
--- a/ewol/object/Manager.hpp
+++ b/ewol/object/Manager.hpp
@@ -62,7 +62,7 @@ namespace ewol {
 				/**
 				 * @brief retrive an object with his name
 				 * @param[in] _name Name of the object
-				 * @return the requested object or nullptr
+				 * @return the requested object or null
 				 */
 				ewol::ObjectShared getObjectNamed(const etk::String& _name);
 			private:
diff --git a/ewol/object/Object.cpp b/ewol/object/Object.cpp
index 11c1b53c..442a1c85 100644
--- a/ewol/object/Object.cpp
+++ b/ewol/object/Object.cpp
@@ -21,7 +21,7 @@ void ewol::Object::autoDestroy() {
 	EWOL_VERBOSE("Destroy object: [" << getId() << "] type:" << getObjectType());
 	ewol::ObjectShared parent = m_parent.lock();
 	// TODO : set a signal to do this ...
-	if (parent != nullptr) {
+	if (parent != null) {
 		EWOL_VERBOSE("Destroy object: Call parrent");
 		parent->requestDestroyFromChild(sharedFromThis());
 	}
@@ -86,7 +86,7 @@ const char * const ewol::Object::getObjectType() const {
 }
 
 void ewol::Object::addObjectType(const char* _type) {
-	if (_type == nullptr) {
+	if (_type == null) {
 		EWOL_ERROR(" try to add a type with no value...");
 		return;
 	}
@@ -148,7 +148,7 @@ bool ewol::Object::storeXML(exml::Element& _node) const {
 
 bool ewol::Object::propertySetOnWidgetNamed(const etk::String& _objectName, const etk::String& _config, const etk::String& _value) {
 	ewol::ObjectShared object = getObjectManager().get(_objectName);
-	if (object == nullptr) {
+	if (object == null) {
 		return false;
 	}
 	return object->properties.set(_config, _value);
@@ -172,13 +172,13 @@ ewol::ObjectShared ewol::Object::getSubObjectNamed(const etk::String& _objectNam
 	if (_objectName == propertyName.get()) {
 		return sharedFromThis();
 	}
-	return nullptr;
+	return null;
 }
 
 
 bool ewol::propertySetOnObjectNamed(const etk::String& _objectName, const etk::String& _config, const etk::String& _value) {
 	ewol::ObjectShared object = ewol::getContext().getEObjectManager().get(_objectName);
-	if (object == nullptr) {
+	if (object == null) {
 		return false;
 	}
 	return object->properties.set(_config, _value);
diff --git a/ewol/object/Object.hpp b/ewol/object/Object.hpp
index 1101bebf..7c41a1e5 100644
--- a/ewol/object/Object.hpp
+++ b/ewol/object/Object.hpp
@@ -35,19 +35,19 @@ template<class TYPE_OBJECT> static void baseInit(const ememory::SharedPtr<TYPE_O
 }
 
 template<class TYPE_OBJECT, class TYPE_VAL, class ... TYPE> static void baseInit(const ememory::SharedPtr<TYPE_OBJECT>& _object, const etk::String& _name, const TYPE_VAL& _val, TYPE&& ... _all ) {
-	eproperty::Property* prop(nullptr);
-	eproperty::PropertyType<TYPE_VAL>* propType(nullptr);
-	if (_object == nullptr) {
+	eproperty::Property* prop(null);
+	eproperty::PropertyType<TYPE_VAL>* propType(null);
+	if (_object == null) {
 		EWOL_ERROR("EMPTY pointer");
 		return;
 	}
 	prop = _object->properties.getRaw(_name);
-	if (prop == nullptr) {
+	if (prop == null) {
 		EWOL_ERROR("property does not exit ... '" << _name << "'");
 		goto exit_on_error;
 	}
 	propType = dynamic_cast<eproperty::PropertyType<TYPE_VAL>*>(prop);
-	if (propType == nullptr) {
+	if (propType == null) {
 		EWOL_ERROR("property does not cast in requested type ... '" << _name << "' require type : " << /*typeid(_val).name()*/ "?TODO?" << "' instead of '" << prop->getType() << "'");
 		goto exit_on_error;
 	}
@@ -63,9 +63,9 @@ exit_on_error:
 #define DECLARE_FACTORY(className) \
 	template<class ... EWOL_FACTORY_CREATE_TYPE> static ememory::SharedPtr<className> create(const EWOL_FACTORY_CREATE_TYPE& ... _all) { \
 		ememory::SharedPtr<className> object(ETK_NEW(className)); \
-		if (object == nullptr) { \
+		if (object == null) { \
 			EWOL_ERROR("Factory error"); \
-			return nullptr; \
+			return null; \
 		} \
 		baseInit(object, _all... ); \
 		object->init(); \
@@ -76,9 +76,9 @@ exit_on_error:
 	} \
 	static ememory::SharedPtr<className> createXml(const exml::Element& _node) { \
 		ememory::SharedPtr<className> object(ETK_NEW(className)); \
-		if (object == nullptr) { \
+		if (object == null) { \
 			EWOL_ERROR("Factory error"); \
-			return nullptr; \
+			return null; \
 		} \
 		object->loadXMLAttributes(_node); \
 		object->init(); \
@@ -92,20 +92,20 @@ exit_on_error:
 	template<class ... EWOL_FACTORY_CREATE_TYPE> static ememory::SharedPtr<className> create(const EWOL_FACTORY_CREATE_TYPE& ... _all) { \
 		ememory::SharedPtr<className> object; \
 		ememory::SharedPtr<ewol::Object> object2 = getObjectNamed(uniqueName); \
-		if (object2 != nullptr) { \
+		if (object2 != null) { \
 			object = ememory::dynamicPointerCast<className>(object2); \
-			if (object == nullptr) { \
+			if (object == null) { \
 				EWOL_CRITICAL("Request object element: '" << uniqueName << "' With the wrong type (dynamic cast error)"); \
-				return nullptr; \
+				return null; \
 			} \
 		} \
-		if (object != nullptr) { \
+		if (object != null) { \
 			return object; \
 		} \
 		object = ememory::SharedPtr<className>(ETK_NEW(className)); \
-		if (object == nullptr) { \
+		if (object == null) { \
 			EWOL_ERROR("Factory error"); \
-			return nullptr; \
+			return null; \
 		} \
 		baseInit(object, "name", etk::String(uniqueName), _all... ); \
 		object->init(); \
@@ -287,13 +287,13 @@ namespace ewol {
 			/**
 			 * @brief Retrive an object with his name (in the global list)
 			 * @param[in] _name Name of the object
-			 * @return the requested object or nullptr
+			 * @return the requested object or null
 			 */
 			static ewol::ObjectShared getObjectNamed(const etk::String& _objectName);
 			/**
 			 * @brief Retrive an object with his name (in the global list)
 			 * @param[in] _name Name of the object
-			 * @return the requested object or nullptr
+			 * @return the requested object or null
 			 */
 			virtual ewol::ObjectShared getSubObjectNamed(const etk::String& _objectName);
 		protected:
@@ -303,7 +303,7 @@ namespace ewol {
 			 */
 			#define subBind(_type, _name, _event, _shared_ptr, _func, ...) do {\
 				ememory::SharedPtr<_type> myObject = ememory::dynamicPointerCast<_type>(getSubObjectNamed(_name)); \
-				if (myObject != nullptr) { \
+				if (myObject != null) { \
 					myObject->_event.connect(_shared_ptr, _func, ##__VA_ARGS__); \
 				} else { \
 					EWOL_ERROR("object named='" << _name << "' not exit or can not be cast in : " << #_type); \
@@ -318,7 +318,7 @@ namespace ewol {
  */
 #define globalBind(_type, _name, _event, _obj, _func, ...) do {\
 	ememory::SharedPtr<_type> myObject = ememory::dynamicPointerCast<_type>(ewol::getContext().getEObjectManager().getObjectNamed(_name)); \
-	if (myObject != nullptr) { \
+	if (myObject != null) { \
 		myObject->_event.connect(_obj, _func, ##__VA_ARGS__); \
 	} else { \
 		EWOL_ERROR("object named='" << _name << "' not exit or can not be cast in : " << #_type); \
@@ -330,7 +330,7 @@ namespace ewol {
  */
 #define externSubBind(_object, _type, _name, _event, _obj, _func, ...) do {\
 	ememory::SharedPtr<_type> myObject = ememory::dynamicPointerCast<_type>(_object->getObjectNamed(_name)); \
-	if (myObject != nullptr) { \
+	if (myObject != null) { \
 		myObject->_event.connect(_obj, _func, ##__VA_ARGS__); \
 	} else { \
 		EWOL_ERROR("object named='" << _name << "' not exit or can not be cast in : " << #_type); \
diff --git a/ewol/resource/Colored3DObject.cpp b/ewol/resource/Colored3DObject.cpp
index c5857df5..459f0d40 100644
--- a/ewol/resource/Colored3DObject.cpp
+++ b/ewol/resource/Colored3DObject.cpp
@@ -16,7 +16,7 @@
 ETK_DECLARE_TYPE(ewol::resource::Colored3DObject);
 
 ewol::resource::Colored3DObject::Colored3DObject() :
-  m_GLprogram(nullptr) {
+  m_GLprogram(null) {
 	addResourceType("ewol::Colored3DObject");
 }
 
@@ -25,7 +25,7 @@ void ewol::resource::Colored3DObject::init() {
 	// get the shader resource :
 	m_GLPosition = 0;
 	m_GLprogram = gale::resource::Program::create("{ewol}DATA:simple3D.prog");
-	if (m_GLprogram != nullptr) {
+	if (m_GLprogram != null) {
 		m_GLPosition = m_GLprogram->getAttribute("EW_coord3d");
 		m_GLColor    = m_GLprogram->getUniform("EW_color");
 		m_GLMatrix   = m_GLprogram->getUniform("EW_MatrixTransformation");
@@ -44,7 +44,7 @@ void ewol::resource::Colored3DObject::draw(const etk::Vector<vec3>& _vertices,
 	if (_vertices.size() <= 0) {
 		return;
 	}
-	if (m_GLprogram == nullptr) {
+	if (m_GLprogram == null) {
 		EWOL_ERROR("No shader ...");
 		return;
 	}
@@ -87,7 +87,7 @@ void ewol::resource::Colored3DObject::draw(const etk::Vector<vec3>& _vertices,
 	if (_vertices.size() <= 0) {
 		return;
 	}
-	if (m_GLprogram == nullptr) {
+	if (m_GLprogram == null) {
 		EWOL_ERROR("No shader ...");
 		return;
 	}
@@ -127,7 +127,7 @@ void ewol::resource::Colored3DObject::drawLine(etk::Vector<vec3>& _vertices,
 	if (_vertices.size() <= 0) {
 		return;
 	}
-	if (m_GLprogram == nullptr) {
+	if (m_GLprogram == null) {
 		EWOL_ERROR("No shader ...");
 		return;
 	}
diff --git a/ewol/resource/ConfigFile.hpp b/ewol/resource/ConfigFile.hpp
index ab273b27..45e18b8c 100644
--- a/ewol/resource/ConfigFile.hpp
+++ b/ewol/resource/ConfigFile.hpp
@@ -36,7 +36,7 @@ namespace ewol {
 				 * @brief keep the resource pointer.
 				 * @note Never free this pointer by your own...
 				 * @param[in] _filename Name of the configuration file.
-				 * @return pointer on the resource or nullptr if an error occured.
+				 * @return pointer on the resource or null if an error occured.
 				 */
 				static ememory::SharedPtr<ewol::resource::ConfigFile> keep(const etk::String& _filename);
 		};
diff --git a/ewol/resource/DistanceFieldFont.cpp b/ewol/resource/DistanceFieldFont.cpp
index f0a1ae52..eef3e5cf 100644
--- a/ewol/resource/DistanceFieldFont.cpp
+++ b/ewol/resource/DistanceFieldFont.cpp
@@ -28,7 +28,7 @@ ewol::resource::DistanceFieldFont::DistanceFieldFont() :
   m_borderSize(10),
   m_textureBorderSize(0,0) {
 	addResourceType("ewol::resource::DistanceFieldFont");
-	m_font = nullptr;
+	m_font = null;
 	m_lastGlyphPos.setValue(1,1);
 	m_lastRawHeigh = 0;
 	m_sizeRatio = 1.0f;
@@ -92,18 +92,18 @@ void ewol::resource::DistanceFieldFont::init(const etk::String& _fontName) {
 	
 	if (m_fileName.size() == 0) {
 		EWOL_ERROR("can not load FONT name : '" << m_fileName << "'" );
-		m_font = nullptr;
+		m_font = null;
 		return;
 	}
 	EWOL_INFO("Load FONT name : '" << m_fileName << "'");
 	m_font = ewol::resource::FontFreeType::create(m_fileName);
-	if (m_font == nullptr) {
+	if (m_font == null) {
 		EWOL_ERROR("Pb Loading FONT name : '" << m_fileName << "'" );
 	}
 	
 	// set the bassic charset:
 	m_listElement.clear();
-	if (m_font == nullptr) {
+	if (m_font == null) {
 		return;
 	}
 	if (importFromFile() == true) {
@@ -222,7 +222,7 @@ void ewol::resource::DistanceFieldFont::generateDistanceField(const egami::Image
 bool ewol::resource::DistanceFieldFont::addGlyph(const char32_t& _val) {
 	ethread::RecursiveLock lock(m_mutex);
 	bool hasChange = false;
-	if (m_font == nullptr) {
+	if (m_font == null) {
 		return false;
 	}
 	// add the curent "char"
@@ -337,7 +337,7 @@ ewol::GlyphProperty* ewol::resource::DistanceFieldFont::getGlyphPointer(const ch
 		if (m_listElement.size() > 0) {
 			return &((m_listElement)[0]);
 		}
-		return nullptr;
+		return null;
 	}
 	//EWOL_ERROR("      index=" << index);
 	//EWOL_ERROR("      m_UVal=" << m_listElement[_displayMode][index].m_UVal);
@@ -396,7 +396,7 @@ bool ewol::resource::DistanceFieldFont::importFromFile() {
 	m_textureBorderSize = doc["m_textureBorderSize"].toString().get("0,0");
 	ejson::Array tmpList = doc["m_listElement"].toArray();
 	if (tmpList.exist() == false) {
-		EWOL_ERROR("nullptr pointer array");
+		EWOL_ERROR("null pointer array");
 		return false;
 	}
 	m_listElement.clear();
diff --git a/ewol/resource/DistanceFieldFont.hpp b/ewol/resource/DistanceFieldFont.hpp
index 463109ed..072e9ce8 100644
--- a/ewol/resource/DistanceFieldFont.hpp
+++ b/ewol/resource/DistanceFieldFont.hpp
@@ -58,7 +58,7 @@ namespace ewol {
 				/**
 				 * @brief get the pointer on the coresponding glyph
 				 * @param[in] _charcode The unicodeValue
-				 * @return The pointer on the glyph  == > never nullptr
+				 * @return The pointer on the glyph  == > never null
 				 */
 				ewol::GlyphProperty* getGlyphPointer(const char32_t& _charcode);
 			public:
@@ -66,7 +66,7 @@ namespace ewol {
 				 * @brief keep the resource pointer.
 				 * @note Never free this pointer by your own...
 				 * @param[in] _filename Name of the texture font.
-				 * @return pointer on the resource or nullptr if an error occured.
+				 * @return pointer on the resource or null if an error occured.
 				 */
 				static ememory::SharedPtr<ewol::resource::DistanceFieldFont> keep(const etk::String& _filename);
 			private:
diff --git a/ewol/resource/FontFreeType.cpp b/ewol/resource/FontFreeType.cpp
index 278aef6e..fd7f23de 100644
--- a/ewol/resource/FontFreeType.cpp
+++ b/ewol/resource/FontFreeType.cpp
@@ -44,7 +44,7 @@ void ewol::resource::freeTypeUnInit() {
 		return;
 	}
 	int32_t error = FT_Done_FreeType( library );
-	library = nullptr;
+	library = null;
 	if(0 != error) {
 		EWOL_CRITICAL(" when Un-loading FreeType Librairy ...");
 	}
diff --git a/ewol/resource/ImageDF.cpp b/ewol/resource/ImageDF.cpp
index e7c0dd0e..aac03456 100644
--- a/ewol/resource/ImageDF.cpp
+++ b/ewol/resource/ImageDF.cpp
@@ -157,9 +157,9 @@ ememory::SharedPtr<ewol::resource::ImageDF> ewol::resource::ImageDF::create(cons
 	EWOL_VERBOSE("KEEP: TextureFile: '" << _filename << "' size=" << _size);
 	if (_filename == "") {
 		ememory::SharedPtr<ewol::resource::ImageDF> object(ETK_NEW(ewol::resource::ImageDF));
-		if (object == nullptr) {
+		if (object == null) {
 			EWOL_ERROR("allocation error of a resource : ??TEX??");
-			return nullptr;
+			return null;
 		}
 		object->init();
 		getManager().localAdd(object);
@@ -194,24 +194,24 @@ ememory::SharedPtr<ewol::resource::ImageDF> ewol::resource::ImageDF::create(cons
 	}
 	
 	EWOL_VERBOSE("KEEP: TextureFile: '" << TmpFilename << "' new size=" << _size);
-	ememory::SharedPtr<ewol::resource::ImageDF> object = nullptr;
+	ememory::SharedPtr<ewol::resource::ImageDF> object = null;
 	ememory::SharedPtr<gale::Resource> object2 = getManager().localKeep("DF__" + TmpFilename);
-	if (object2 != nullptr) {
+	if (object2 != null) {
 		object = ememory::dynamicPointerCast<ewol::resource::ImageDF>(object2);
-		if (object == nullptr) {
+		if (object == null) {
 			EWOL_CRITICAL("Request resource file : '" << TmpFilename << "' With the wrong type (dynamic cast error)");
-			return nullptr;
+			return null;
 		}
 	}
-	if (object != nullptr) {
+	if (object != null) {
 		return object;
 	}
 	EWOL_INFO("CREATE: ImageDF: '" << TmpFilename << "' size=" << _size);
 	// need to crate a new one ...
 	object = ememory::SharedPtr<ewol::resource::ImageDF>(ETK_NEW(ewol::resource::ImageDF));
-	if (object == nullptr) {
+	if (object == null) {
 		EWOL_ERROR("allocation error of a resource : " << _filename);
-		return nullptr;
+		return null;
 	}
 	object->init("DF__" + TmpFilename, _filename, _size);
 	getManager().localAdd(object);
diff --git a/ewol/resource/ImageDF.hpp b/ewol/resource/ImageDF.hpp
index a1a8cef1..95d6eefd 100644
--- a/ewol/resource/ImageDF.hpp
+++ b/ewol/resource/ImageDF.hpp
@@ -38,7 +38,7 @@ namespace ewol {
 				 * @note Never free this pointer by your own...
 				 * @param[in] _filename Name of the image file.
 				 * @param[in] _requested size of the image (usefull when loading .svg to automatic rescale)
-				 * @return pointer on the resource or nullptr if an error occured.
+				 * @return pointer on the resource or null if an error occured.
 				 */
 				static ememory::SharedPtr<ewol::resource::ImageDF> create(const etk::String& _filename, ivec2 _size=ivec2(-1,-1));
 		};
diff --git a/ewol/resource/TextureFile.cpp b/ewol/resource/TextureFile.cpp
index bc819453..c4aabe84 100644
--- a/ewol/resource/TextureFile.cpp
+++ b/ewol/resource/TextureFile.cpp
@@ -62,9 +62,9 @@ ememory::SharedPtr<ewol::resource::TextureFile> ewol::resource::TextureFile::cre
 	EWOL_VERBOSE("KEEP: TextureFile: '" << _filename << "' size=" << _size << " sizeRegister=" << _sizeRegister);
 	if (_filename == "") {
 		ememory::SharedPtr<ewol::resource::TextureFile> object(ETK_NEW(ewol::resource::TextureFile));
-		if (object == nullptr) {
+		if (object == null) {
 			EWOL_ERROR("allocation error of a resource : ??TEX??");
-			return nullptr;
+			return null;
 		}
 		object->init();
 		getManager().localAdd(object);
@@ -96,24 +96,24 @@ ememory::SharedPtr<ewol::resource::TextureFile> ewol::resource::TextureFile::cre
 	}
 	
 	EWOL_VERBOSE("KEEP: TextureFile: '" << tmpFilename << "' new size=" << _size);
-	ememory::SharedPtr<ewol::resource::TextureFile> object = nullptr;
+	ememory::SharedPtr<ewol::resource::TextureFile> object = null;
 	ememory::SharedPtr<gale::Resource> object2 = getManager().localKeep(tmpFilename);
-	if (object2 != nullptr) {
+	if (object2 != null) {
 		object = ememory::dynamicPointerCast<ewol::resource::TextureFile>(object2);
-		if (object == nullptr) {
+		if (object == null) {
 			EWOL_CRITICAL("Request resource file : '" << tmpFilename << "' With the wrong type (dynamic cast error)");
-			return nullptr;
+			return null;
 		}
 	}
-	if (object != nullptr) {
+	if (object != null) {
 		return object;
 	}
 	EWOL_INFO("CREATE: TextureFile: '" << tmpFilename << "' size=" << _size);
 	// need to crate a new one ...
 	object = ememory::SharedPtr<ewol::resource::TextureFile>(ETK_NEW(ewol::resource::TextureFile));
-	if (object == nullptr) {
+	if (object == null) {
 		EWOL_ERROR("allocation error of a resource : " << _filename);
-		return nullptr;
+		return null;
 	}
 	object->init(tmpFilename, _filename, _size);
 	getManager().localAdd(object);
diff --git a/ewol/resource/TextureFile.hpp b/ewol/resource/TextureFile.hpp
index 7e262544..98527340 100644
--- a/ewol/resource/TextureFile.hpp
+++ b/ewol/resource/TextureFile.hpp
@@ -36,7 +36,7 @@ namespace ewol {
 				 * @param[in] _filename Name of the image file.
 				 * @param[in] _requested size of the image (usefull when loading .svg to automatic rescale)
 				 * @param[in] _sizeRegister size register in named (When you preaload the images the size write here will be )
-				 * @return pointer on the resource or nullptr if an error occured.
+				 * @return pointer on the resource or null if an error occured.
 				 */
 				static ememory::SharedPtr<ewol::resource::TextureFile> create(const etk::String& _filename,
 				                                                           ivec2 _size=ewol::resource::TextureFile::sizeAuto,
diff --git a/ewol/resource/TexturedFont.cpp b/ewol/resource/TexturedFont.cpp
index 31d2d62a..9ffc6cfe 100644
--- a/ewol/resource/TexturedFont.cpp
+++ b/ewol/resource/TexturedFont.cpp
@@ -49,10 +49,10 @@ void ewol::resource::TexturedFont::init(const etk::String& _fontName) {
 	ewol::resource::Texture::init(_fontName);
 	EWOL_DEBUG("Load font : '" << _fontName << "'" );
 
-	m_font[0] = nullptr;
-	m_font[1] = nullptr;
-	m_font[2] = nullptr;
-	m_font[3] = nullptr;
+	m_font[0] = null;
+	m_font[1] = null;
+	m_font[2] = null;
+	m_font[3] = null;
 	
 	m_modeWraping[0] = ewol::font::Regular;
 	m_modeWraping[1] = ewol::font::Regular;
@@ -74,7 +74,7 @@ void ewol::resource::TexturedFont::init(const etk::String& _fontName) {
 	const char * tmpData = _fontName.c_str();
 	const char * tmpPos = strchr(tmpData, ':');
 	
-	if (tmpPos == nullptr) {
+	if (tmpPos == null) {
 		m_size = 1;
 		EWOL_CRITICAL("Can not parse the font name : '" << _fontName << "' ??? ':' " );
 		return;
@@ -194,19 +194,19 @@ void ewol::resource::TexturedFont::init(const etk::String& _fontName) {
 	for (int32_t iiiFontId=0; iiiFontId<4 ; iiiFontId++) {
 		if (m_fileName[iiiFontId].size() == 0) {
 			EWOL_DEBUG("can not load FONT [" << iiiFontId << "] name : \"" << m_fileName[iiiFontId] << "\"  == > size=" << m_size );
-			m_font[iiiFontId] = nullptr;
+			m_font[iiiFontId] = null;
 			continue;
 		}
 		EWOL_INFO("Load FONT [" << iiiFontId << "] name : \"" << m_fileName[iiiFontId] << "\"  == > size=" << m_size);
 		m_font[iiiFontId] = ewol::resource::FontFreeType::create(m_fileName[iiiFontId]);
-		if (m_font[iiiFontId] == nullptr) {
+		if (m_font[iiiFontId] == null) {
 			EWOL_DEBUG("error in loading FONT [" << iiiFontId << "] name : \"" << m_fileName[iiiFontId] << "\"  == > size=" << m_size );
 		}
 	}
 	for (int32_t iiiFontId=0; iiiFontId<4 ; iiiFontId++) {
 		// set the bassic charset:
 		m_listElement[iiiFontId].clear();
-		if (m_font[iiiFontId] == nullptr) {
+		if (m_font[iiiFontId] == null) {
 			continue;
 		}
 		m_height[iiiFontId] = m_font[iiiFontId]->getHeight(m_size);
@@ -239,7 +239,7 @@ bool ewol::resource::TexturedFont::addGlyph(const char32_t& _val) {
 	bool hasChange = false;
 	// for each font :
 	for (int32_t iii=0; iii<4 ; iii++) {
-		if (m_font[iii] == nullptr) {
+		if (m_font[iii] == null) {
 			continue;
 		}
 		// add the curent "char"
diff --git a/ewol/resource/TexturedFont.hpp b/ewol/resource/TexturedFont.hpp
index da1ffed2..e15cc95e 100644
--- a/ewol/resource/TexturedFont.hpp
+++ b/ewol/resource/TexturedFont.hpp
@@ -73,7 +73,7 @@ namespace ewol {
 				 * @brief get the pointer on the coresponding glyph
 				 * @param[in] _charcode The unicodeValue
 				 * @param[in] _displayMode Mode to display the currrent font
-				 * @return The pointer on the glyph  == > never nullptr
+				 * @return The pointer on the glyph  == > never null
 				 */
 				ewol::GlyphProperty* getGlyphPointer(const char32_t& _charcode, const enum ewol::font::mode _displayMode);
 				/**
diff --git a/ewol/tools/message.cpp b/ewol/tools/message.cpp
index f8e62742..7ae1703c 100644
--- a/ewol/tools/message.cpp
+++ b/ewol/tools/message.cpp
@@ -15,7 +15,7 @@
 
 void ewol::tools::message::create(enum ewol::tools::message::type _type, const etk::String& _message) {
 	ewol::widget::StdPopUpShared tmpPopUp = widget::StdPopUp::create();
-	if (tmpPopUp == nullptr) {
+	if (tmpPopUp == null) {
 		EWOL_ERROR("Can not create a simple pop-up");
 		return;
 	}
@@ -39,7 +39,7 @@ void ewol::tools::message::create(enum ewol::tools::message::type _type, const e
 	// get windows:
 	ewol::Context& context = ewol::getContext();
 	ewol::widget::WindowsShared windows = context.getWindows();
-	if (windows == nullptr) {
+	if (windows == null) {
 		EWOL_ERROR("can not get the current windows ... ==> can not display message : " << _message);
 		return;
 	}
diff --git a/ewol/widget/Button.cpp b/ewol/widget/Button.cpp
index f52f9035..e710f8f4 100644
--- a/ewol/widget/Button.cpp
+++ b/ewol/widget/Button.cpp
@@ -219,12 +219,12 @@ void ewol::widget::Button::onChangePropertyValue() {
 	}
 	if (*propertyEnableSingle == true) {
 		if (    m_idWidgetDisplayed == 0
-		     && m_subWidget[0] == nullptr
-		     && m_subWidget[1] != nullptr) {
+		     && m_subWidget[0] == null
+		     && m_subWidget[1] != null) {
 			m_idWidgetDisplayed = 1;
 		} else if (    m_idWidgetDisplayed == 1
-		            && m_subWidget[1] == nullptr
-		            && m_subWidget[0] != nullptr) {
+		            && m_subWidget[1] == null
+		            && m_subWidget[0] != null) {
 			m_idWidgetDisplayed = 0;
 		}
 	}
@@ -257,12 +257,12 @@ void ewol::widget::Button::onChangePropertyToggleMode() {
 	}
 	if (*propertyEnableSingle == true) {
 		if (    m_idWidgetDisplayed == 0
-		     && m_subWidget[0] == nullptr
-		     && m_subWidget[1] != nullptr) {
+		     && m_subWidget[0] == null
+		     && m_subWidget[1] != null) {
 			m_idWidgetDisplayed = 1;
 		} else if (    m_idWidgetDisplayed == 1
-		            && m_subWidget[1] == nullptr
-		            && m_subWidget[0] != nullptr) {
+		            && m_subWidget[1] == null
+		            && m_subWidget[0] != null) {
 			m_idWidgetDisplayed = 0;
 		}
 	}
@@ -273,15 +273,15 @@ void ewol::widget::Button::onChangePropertyToggleMode() {
 void ewol::widget::Button::onChangePropertyEnableSingle() {
 	if (*propertyEnableSingle == true) {
 		if (    m_idWidgetDisplayed == 0
-		     && m_subWidget[0] == nullptr
-		     && m_subWidget[1] != nullptr) {
+		     && m_subWidget[0] == null
+		     && m_subWidget[1] != null) {
 			m_idWidgetDisplayed = 1;
 		} else if (    m_idWidgetDisplayed == 1
-		            && m_subWidget[1] == nullptr
-		            && m_subWidget[0] != nullptr) {
+		            && m_subWidget[1] == null
+		            && m_subWidget[0] != null) {
 			m_idWidgetDisplayed = 0;
-		} else if (    m_subWidget[0] == nullptr
-		            && m_subWidget[1] == nullptr) {
+		} else if (    m_subWidget[0] == null
+		            && m_subWidget[1] == null) {
 			m_idWidgetDisplayed = 0;
 		}
 	}
diff --git a/ewol/widget/ButtonColor.cpp b/ewol/widget/ButtonColor.cpp
index 47f6019f..0bc11ff0 100644
--- a/ewol/widget/ButtonColor.cpp
+++ b/ewol/widget/ButtonColor.cpp
@@ -26,7 +26,7 @@ ewol::widget::ButtonColor::ButtonColor() :
   signalChange(this, "change", "Button color change value"),
   propertyValue(this, "color", etk::color::black, "Current color", &ewol::widget::ButtonColor::onChangePropertyValue),
   propertyShape(this, "shape", "{ewol}THEME:GUI:Button.json", "shape of the widget", &ewol::widget::ButtonColor::onChangePropertyShape),
-  m_widgetContextMenu(nullptr) {
+  m_widgetContextMenu(null) {
 	addObjectType("ewol::widget::ButtonColor");
 	changeStatusIn(STATUS_UP);
 	// Limit event at 1:
@@ -160,7 +160,7 @@ bool ewol::widget::ButtonColor::onEventInput(const ewol::event::Input& _event) {
 				m_mouseHover = false;
 				// create a context menu : 
 				m_widgetContextMenu = ewol::widget::ContextMenu::create();
-				if (m_widgetContextMenu == nullptr) {
+				if (m_widgetContextMenu == null) {
 					EWOL_ERROR("Allocation Error");
 					return true;
 				}
@@ -174,7 +174,7 @@ bool ewol::widget::ButtonColor::onEventInput(const ewol::event::Input& _event) {
 				m_widgetContextMenu->setSubWidget(myColorChooser);
 				myColorChooser->signalChange.connect(sharedFromThis(), &ewol::widget::ButtonColor::onCallbackColorChange);
 				ewol::widget::WindowsShared currentWindows = getWindows();
-				if (currentWindows == nullptr) {
+				if (currentWindows == null) {
 					EWOL_ERROR("Can not get the curent Windows...");
 					m_widgetContextMenu.reset();
 				} else {
diff --git a/ewol/widget/Composer.cpp b/ewol/widget/Composer.cpp
index 0d757189..9790ea08 100644
--- a/ewol/widget/Composer.cpp
+++ b/ewol/widget/Composer.cpp
@@ -28,7 +28,7 @@ ewol::WidgetShared ewol::widget::composerGenerateFile(const etk::String& _fileNa
 ewol::WidgetShared ewol::widget::composerGenerateString(const etk::String& _data, uint64_t _id) {
 	ewol::widget::Manager& widgetManager = ewol::getContext().getWidgetManager();
 	if (_data == "") {
-		return nullptr;
+		return null;
 	}
 	exml::Document doc;
 	etk::String tmpData = _data;
@@ -38,12 +38,12 @@ ewol::WidgetShared ewol::widget::composerGenerateString(const etk::String& _data
 	}
 	if (doc.parse(tmpData) == false) {
 		EWOL_ERROR(" can not load file XML string...");
-		return nullptr;
+		return null;
 	}
 	exml::Element root = doc.toElement();
 	if (root.nodes.size() == 0) {
 		EWOL_ERROR(" (l ?) No node in the XML file/string.");
-		return nullptr;
+		return null;
 	}
 	if (root.nodes.size() > 1) {
 		EWOL_WARNING(" (l ?) More than 1 node in the XML file/string. (JUST parse the first)");
@@ -51,18 +51,18 @@ ewol::WidgetShared ewol::widget::composerGenerateString(const etk::String& _data
 	exml::Element pNode = root.nodes[0].toElement();
 	if (pNode.exist() == false) {
 		EWOL_ERROR(" (l ?) No node in the XML file/string. {2}");
-		return nullptr;
+		return null;
 	}
 	etk::String widgetName = pNode.getValue();
 	if (widgetManager.exist(widgetName) == false) {
 		EWOL_ERROR("(l " << pNode.getPos() << ") Unknown basic node='" << widgetName << "' not in : [" << widgetManager.list() << "]" );
-		return nullptr;
+		return null;
 	}
 	EWOL_DEBUG("try to create subwidget : '" << widgetName << "'");
 	ewol::WidgetShared tmpWidget = widgetManager.create(widgetName);
-	if (tmpWidget == nullptr) {
+	if (tmpWidget == null) {
 		EWOL_ERROR ("(l " << pNode.getPos() << ") Can not create the widget : '" << widgetName << "'");
-		return nullptr;
+		return null;
 	}
 	if (tmpWidget->loadXML(pNode) == false) {
 		EWOL_ERROR ("(l " << pNode.getPos() << ") can not load widget properties : '" << widgetName << "'");
@@ -105,7 +105,7 @@ bool ewol::widget::Composer::loadFromString(const etk::String& _composerXmlStrin
 	}
 	// call upper class to parse his elements ...
 	ewol::widget::Container::loadXML(root);
-	if (m_subWidget == nullptr) {
+	if (m_subWidget == null) {
 		EWOL_WARNING("Load data from composer and have no under Widget after loading");
 		if (_composerXmlString.size() != 0) {
 			EWOL_ERROR("Error Loading XML data : " << _composerXmlString);
diff --git a/ewol/widget/Container.cpp b/ewol/widget/Container.cpp
index bbdddc99..35c27056 100644
--- a/ewol/widget/Container.cpp
+++ b/ewol/widget/Container.cpp
@@ -26,12 +26,12 @@ ewol::WidgetShared ewol::widget::Container::getSubWidget() {
 }
 
 void ewol::widget::Container::setSubWidget(ewol::WidgetShared _newWidget) {
-	if (_newWidget == nullptr) {
+	if (_newWidget == null) {
 		return;
 	}
 	subWidgetRemove();
 	m_subWidget = _newWidget;
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		m_subWidget->setParent(sharedFromThis());
 	}
 	markToRedraw();
@@ -47,7 +47,7 @@ void ewol::widget::Container::subWidgetReplace(const ewol::WidgetShared& _oldWid
 	m_subWidget->removeParent();
 	m_subWidget.reset();
 	m_subWidget = _newWidget;
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		m_subWidget->setParent(sharedFromThis());
 	}
 	markToRedraw();
@@ -55,7 +55,7 @@ void ewol::widget::Container::subWidgetReplace(const ewol::WidgetShared& _oldWid
 }
 
 void ewol::widget::Container::subWidgetRemove() {
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		m_subWidget->removeParent();
 		m_subWidget.reset();
 		markToRedraw();
@@ -64,7 +64,7 @@ void ewol::widget::Container::subWidgetRemove() {
 }
 
 void ewol::widget::Container::subWidgetUnLink() {
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		m_subWidget->removeParent();
 	}
 	m_subWidget.reset();
@@ -72,13 +72,13 @@ void ewol::widget::Container::subWidgetUnLink() {
 
 ewol::ObjectShared ewol::widget::Container::getSubObjectNamed(const etk::String& _objectName) {
 	ewol::ObjectShared tmpObject = ewol::Widget::getSubObjectNamed(_objectName);
-	if (tmpObject != nullptr) {
+	if (tmpObject != null) {
 		return tmpObject;
 	}
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		return m_subWidget->getSubObjectNamed(_objectName);
 	}
-	return nullptr;
+	return null;
 }
 
 void ewol::widget::Container::systemDraw(const ewol::DrawProperty& _displayProp) {
@@ -87,13 +87,13 @@ void ewol::widget::Container::systemDraw(const ewol::DrawProperty& _displayProp)
 		return;
 	}
 	ewol::Widget::systemDraw(_displayProp);
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		ewol::DrawProperty prop = _displayProp;
 		prop.limit(m_origin, m_size);
 		//EWOL_INFO("Draw : [" << propertyName << "] t=" << getObjectType() << " o=" << m_origin << "  s=" << m_size);
 		m_subWidget->systemDraw(prop);
 	} else {
-		EWOL_INFO("[" << getId() << "]       ++++++ : [nullptr]");
+		EWOL_INFO("[" << getId() << "]       ++++++ : [null]");
 	}
 }
 
@@ -102,7 +102,7 @@ void ewol::widget::Container::onChangeSize() {
 	if (*propertyHide == true) {
 		return;
 	}
-	if (m_subWidget == nullptr) {
+	if (m_subWidget == null) {
 		return;
 	}
 	vec2 origin = m_origin+m_offset;
@@ -118,7 +118,7 @@ void ewol::widget::Container::calculateMinMaxSize() {
 	// call main class
 	ewol::Widget::calculateMinMaxSize();
 	// call sub classes
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		m_subWidget->calculateMinMaxSize();
 		vec2 min = m_subWidget->getCalculateMinSize();
 		m_minSize.setMax(min);
@@ -127,18 +127,18 @@ void ewol::widget::Container::calculateMinMaxSize() {
 }
 
 void ewol::widget::Container::onRegenerateDisplay() {
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		m_subWidget->onRegenerateDisplay();
 	}
 }
 
 ewol::WidgetShared ewol::widget::Container::getWidgetAtPos(const vec2& _pos) {
 	if (propertyHide.get() == false) {
-		if (m_subWidget != nullptr) {
+		if (m_subWidget != null) {
 			return m_subWidget->getWidgetAtPos(_pos);
 		}
 	}
-	return nullptr;
+	return null;
 };
 
 bool ewol::widget::Container::loadXML(const exml::Element& _node) {
@@ -162,13 +162,13 @@ bool ewol::widget::Container::loadXML(const exml::Element& _node) {
 			EWOL_ERROR("(l " << pNode.getPos() << ") Unknown basic node='" << widgetName << "' not in : [" << getWidgetManager().list() << "]" );
 			continue;
 		}
-		if (getSubWidget() != nullptr) {
+		if (getSubWidget() != null) {
 			EWOL_ERROR("(l " << pNode.getPos() << ") Can only have one subWidget ??? node='" << widgetName << "'" );
 			continue;
 		}
 		EWOL_DEBUG("try to create subwidget : '" << widgetName << "'");
 		ewol::WidgetShared tmpWidget = getWidgetManager().create(widgetName, pNode);
-		if (tmpWidget == nullptr) {
+		if (tmpWidget == null) {
 			EWOL_ERROR ("(l " << pNode.getPos() << ") Can not create the widget : '" << widgetName << "'");
 			continue;
 		}
@@ -180,7 +180,7 @@ bool ewol::widget::Container::loadXML(const exml::Element& _node) {
 		}
 	}
 	if (    _node.nodes.size() != 0
-	     && m_subWidget == nullptr) {
+	     && m_subWidget == null) {
 		EWOL_WARNING("Load container with no data inside");
 	}
 	return true;
@@ -198,7 +198,7 @@ void ewol::widget::Container::requestDestroyFromChild(const ewol::ObjectShared&
 	if (m_subWidget != _child) {
 		return;
 	}
-	if (m_subWidget == nullptr) {
+	if (m_subWidget == null) {
 		return;
 	}
 	m_subWidget->removeParent();
@@ -209,7 +209,7 @@ void ewol::widget::Container::requestDestroyFromChild(const ewol::ObjectShared&
 void ewol::widget::Container::drawWidgetTree(int32_t _level) {
 	ewol::Widget::drawWidgetTree(_level);
 	_level++;
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		m_subWidget->drawWidgetTree(_level);
 	}
 }
diff --git a/ewol/widget/Container2.cpp b/ewol/widget/Container2.cpp
index f3ceb5e6..1c7e6291 100644
--- a/ewol/widget/Container2.cpp
+++ b/ewol/widget/Container2.cpp
@@ -25,7 +25,7 @@ ewol::widget::Container2::~Container2() {
 void ewol::widget::Container2::setSubWidget(ewol::WidgetShared _newWidget, int32_t _idWidget) {
 	subWidgetRemove(_idWidget);
 	m_subWidget[_idWidget] = _newWidget;
-	if (m_subWidget[_idWidget] != nullptr) {
+	if (m_subWidget[_idWidget] != null) {
 		EWOL_VERBOSE("Add widget : " << _idWidget);
 		m_subWidget[_idWidget]->setParent(sharedFromThis());
 	}
@@ -43,7 +43,7 @@ void ewol::widget::Container2::subWidgetReplace(const ewol::WidgetShared& _oldWi
 		m_subWidget[iii]->removeParent();
 		m_subWidget[iii].reset();
 		m_subWidget[iii] = _newWidget;
-		if (m_subWidget[iii] != nullptr) {
+		if (m_subWidget[iii] != null) {
 			m_subWidget[iii]->setParent(sharedFromThis());
 		}
 		haveChange = true;
@@ -58,7 +58,7 @@ void ewol::widget::Container2::subWidgetReplace(const ewol::WidgetShared& _oldWi
 
 
 void ewol::widget::Container2::subWidgetRemove(int32_t _idWidget) {
-	if (m_subWidget[_idWidget] != nullptr) {
+	if (m_subWidget[_idWidget] != null) {
 		EWOL_VERBOSE("Remove widget : " << _idWidget);
 		m_subWidget[_idWidget]->removeParent();
 		m_subWidget[_idWidget].reset();
@@ -68,7 +68,7 @@ void ewol::widget::Container2::subWidgetRemove(int32_t _idWidget) {
 }
 
 void ewol::widget::Container2::subWidgetUnLink(int32_t _idWidget) {
-	if (m_subWidget[_idWidget] != nullptr) {
+	if (m_subWidget[_idWidget] != null) {
 		m_subWidget[_idWidget]->removeParent();
 		EWOL_VERBOSE("Unlink widget : " << _idWidget);
 	}
@@ -77,19 +77,19 @@ void ewol::widget::Container2::subWidgetUnLink(int32_t _idWidget) {
 
 ewol::ObjectShared ewol::widget::Container2::getSubObjectNamed(const etk::String& _widgetName) {
 	ewol::ObjectShared tmpObject = ewol::Widget::getSubObjectNamed(_widgetName);
-	if (tmpObject != nullptr) {
+	if (tmpObject != null) {
 		return tmpObject;
 	}
-	if (m_subWidget[0] != nullptr) {
+	if (m_subWidget[0] != null) {
 		tmpObject = m_subWidget[0]->getSubObjectNamed(_widgetName);
-		if (tmpObject != nullptr) {
+		if (tmpObject != null) {
 			return tmpObject;
 		}
 	}
-	if (m_subWidget[1] != nullptr) {
+	if (m_subWidget[1] != null) {
 		return m_subWidget[1]->getSubObjectNamed(_widgetName);
 	}
-	return nullptr;
+	return null;
 }
 
 void ewol::widget::Container2::systemDraw(const ewol::DrawProperty& _displayProp) {
@@ -98,7 +98,7 @@ void ewol::widget::Container2::systemDraw(const ewol::DrawProperty& _displayProp
 		return;
 	}
 	ewol::Widget::systemDraw(_displayProp);
-	if (m_subWidget[m_idWidgetDisplayed] != nullptr) {
+	if (m_subWidget[m_idWidgetDisplayed] != null) {
 		//EWOL_INFO("Draw : [" << propertyName << "] t=" << getObjectType() << " o=" << m_origin << "  s=" << m_size);
 		m_subWidget[m_idWidgetDisplayed]->systemDraw(_displayProp);
 	}
@@ -119,7 +119,7 @@ ewol::Padding ewol::widget::Container2::onChangeSizePadded(const ewol::Padding&
 	vec2 origin = delta + vec2(_padding.xLeft(), _padding.yButtom());
 	subElementSize -= vec2(_padding.x(), _padding.y());
 	for (size_t iii = 0; iii < 2; ++iii) {
-		if (m_subWidget[iii] != nullptr) {
+		if (m_subWidget[iii] != null) {
 			vec2 origin2 = origin+m_offset;
 			vec2 minSize = m_subWidget[iii]->getCalculateMinSize();
 			//bvec2 expand = m_subWidget[iii]->propertyExpand.get();
@@ -143,7 +143,7 @@ void ewol::widget::Container2::calculateMinMaxSizePadded(const ewol::Padding& _p
 	m_minSize = vec2(0,0);
 	// call sub classes
 	for (size_t iii = 0; iii < 2; ++iii) {
-		if (m_subWidget[iii] != nullptr) {
+		if (m_subWidget[iii] != null) {
 			m_subWidget[iii]->calculateMinMaxSize();
 			vec2 min = m_subWidget[iii]->getCalculateMinSize();
 			m_minSize.setMax(min);
@@ -157,18 +157,18 @@ void ewol::widget::Container2::calculateMinMaxSizePadded(const ewol::Padding& _p
 }
 
 void ewol::widget::Container2::onRegenerateDisplay() {
-	if (m_subWidget[m_idWidgetDisplayed] != nullptr) {
+	if (m_subWidget[m_idWidgetDisplayed] != null) {
 		m_subWidget[m_idWidgetDisplayed]->onRegenerateDisplay();
 	}
 }
 /*
 ewol::WidgetShared ewol::widget::Container2::getWidgetAtPos(const vec2& _pos) {
 	if (isHide() == false) {
-		if (m_subWidget[m_idWidgetDisplayed] != nullptr) {
+		if (m_subWidget[m_idWidgetDisplayed] != null) {
 			return m_subWidget[m_idWidgetDisplayed]->getWidgetAtPos(_pos);
 		}
 	}
-	return nullptr;
+	return null;
 }
 */
 
@@ -195,16 +195,16 @@ bool ewol::widget::Container2::loadXML(const exml::Element& _node) {
 			continue;
 		}
 		bool toogleMode=false;
-		if (getSubWidget() != nullptr) {
+		if (getSubWidget() != null) {
 			toogleMode=true;
-			if (getSubWidgetToggle() != nullptr) {
+			if (getSubWidgetToggle() != null) {
 				EWOL_ERROR("(l " << pNode.getPos() << ") Can only have one subWidget ??? node='" << widgetName << "'" );
 				continue;
 			}
 		}
 		EWOL_DEBUG("try to create subwidget : '" << widgetName << "'");
 		ewol::WidgetShared tmpWidget = getWidgetManager().create(widgetName, pNode);
-		if (tmpWidget == nullptr) {
+		if (tmpWidget == null) {
 			EWOL_ERROR ("(l " << pNode.getPos() << ") Can not create the widget: '" << widgetName << "'");
 			continue;
 		}
@@ -232,7 +232,7 @@ void ewol::widget::Container2::setOffset(const vec2& _newVal) {
 
 void ewol::widget::Container2::requestDestroyFromChild(const ewol::ObjectShared& _child) {
 	if (m_subWidget[0] == _child) {
-		if (m_subWidget[0] == nullptr) {
+		if (m_subWidget[0] == null) {
 			return;
 		}
 		m_subWidget[0]->removeParent();
@@ -240,7 +240,7 @@ void ewol::widget::Container2::requestDestroyFromChild(const ewol::ObjectShared&
 		markToRedraw();
 	}
 	if (m_subWidget[1] == _child) {
-		if (m_subWidget[1] == nullptr) {
+		if (m_subWidget[1] == null) {
 			return;
 		}
 		m_subWidget[1]->removeParent();
@@ -252,10 +252,10 @@ void ewol::widget::Container2::requestDestroyFromChild(const ewol::ObjectShared&
 void ewol::widget::Container2::drawWidgetTree(int32_t _level) {
 	ewol::Widget::drawWidgetTree(_level);
 	_level++;
-	if (m_subWidget[0] != nullptr) {
+	if (m_subWidget[0] != null) {
 		m_subWidget[0]->drawWidgetTree(_level);
 	}
-	if (m_subWidget[1] != nullptr) {
+	if (m_subWidget[1] != null) {
 		m_subWidget[1]->drawWidgetTree(_level);
 	}
 }
diff --git a/ewol/widget/Container2.hpp b/ewol/widget/Container2.hpp
index 1862bfd4..93ad51ad 100644
--- a/ewol/widget/Container2.hpp
+++ b/ewol/widget/Container2.hpp
@@ -143,7 +143,7 @@ namespace ewol {
 				 * @return the id of the widget displayable
 				 */
 				int32_t convertId(int32_t _id) {
-					if (m_subWidget[_id] == nullptr) {
+					if (m_subWidget[_id] == null) {
 						return (_id+1)%2;
 					}
 					return _id;
diff --git a/ewol/widget/ContainerN.cpp b/ewol/widget/ContainerN.cpp
index b7dfcf2f..deaa7e05 100644
--- a/ewol/widget/ContainerN.cpp
+++ b/ewol/widget/ContainerN.cpp
@@ -57,7 +57,7 @@ void ewol::widget::ContainerN::subWidgetReplace(ewol::WidgetShared _oldWidget,
 		}
 		it->removeParent();
 		it.reset();
-		if (_newWidget != nullptr) {
+		if (_newWidget != null) {
 			_newWidget->setParent(sharedFromThis());
 		}
 		it = _newWidget;
@@ -72,7 +72,7 @@ void ewol::widget::ContainerN::subWidgetReplace(ewol::WidgetShared _oldWidget,
 }
 
 int32_t ewol::widget::ContainerN::subWidgetAdd(ewol::WidgetShared _newWidget) {
-	if (_newWidget == nullptr) {
+	if (_newWidget == null) {
 		EWOL_ERROR("[" << getId() << "] {" << getObjectType() << "} Try to add An empty Widget ... ");
 		return -1;
 	}
@@ -85,11 +85,11 @@ int32_t ewol::widget::ContainerN::subWidgetAdd(ewol::WidgetShared _newWidget) {
 }
 
 int32_t ewol::widget::ContainerN::subWidgetAddStart(ewol::WidgetShared _newWidget) {
-	if (_newWidget == nullptr) {
+	if (_newWidget == null) {
 		EWOL_ERROR("[" << getId() << "] {" << getObjectType() << "} Try to add start An empty Widget ... ");
 		return -1;
 	}
-	if (_newWidget != nullptr) {
+	if (_newWidget != null) {
 		_newWidget->setParent(sharedFromThis());
 	}
 	m_subWidget.insert(m_subWidget.begin(), _newWidget);
@@ -99,7 +99,7 @@ int32_t ewol::widget::ContainerN::subWidgetAddStart(ewol::WidgetShared _newWidge
 }
 
 void ewol::widget::ContainerN::subWidgetRemove(ewol::WidgetShared _newWidget) {
-	if (_newWidget == nullptr) {
+	if (_newWidget == null) {
 		return;
 	}
 	size_t errorControl = m_subWidget.size();
@@ -119,7 +119,7 @@ void ewol::widget::ContainerN::subWidgetRemove(ewol::WidgetShared _newWidget) {
 }
 
 void ewol::widget::ContainerN::subWidgetUnLink(ewol::WidgetShared _newWidget) {
-	if (_newWidget == nullptr) {
+	if (_newWidget == null) {
 		return;
 	}
 	auto it(m_subWidget.begin());
@@ -139,7 +139,7 @@ void ewol::widget::ContainerN::subWidgetUnLink(ewol::WidgetShared _newWidget) {
 
 void ewol::widget::ContainerN::subWidgetRemoveAll() {
 	for(auto &it : m_subWidget) {
-		if (it != nullptr) {
+		if (it != null) {
 			it->removeParent();
 		}
 		it.reset();
@@ -153,18 +153,18 @@ void ewol::widget::ContainerN::subWidgetRemoveAllDelayed() {
 
 ewol::ObjectShared ewol::widget::ContainerN::getSubObjectNamed(const etk::String& _objectName) {
 	ewol::ObjectShared tmpObject = ewol::Widget::getSubObjectNamed(_objectName);
-	if (tmpObject != nullptr) {
+	if (tmpObject != null) {
 		return tmpObject;
 	}
 	for (auto &it : m_subWidget) {
-		if (it != nullptr) {
+		if (it != null) {
 			tmpObject = it->getSubObjectNamed(_objectName);
-			if (tmpObject != nullptr) {
+			if (tmpObject != null) {
 				return tmpObject;
 			}
 		}
 	}
-	return nullptr;
+	return null;
 }
 
 void ewol::widget::ContainerN::systemDraw(const ewol::DrawProperty& _displayProp) {
@@ -178,7 +178,7 @@ void ewol::widget::ContainerN::systemDraw(const ewol::DrawProperty& _displayProp
 	ewol::DrawProperty prop = _displayProp;
 	prop.limit(m_origin, m_size);
 	for (int64_t iii = m_subWidget.size()-1; iii>=0; --iii) {
-		if (m_subWidget[iii] != nullptr) {
+		if (m_subWidget[iii] != null) {
 			//EWOL_INFO("       ***** : [" << (*it)->propertyName << "] t=" << (*it)->getObjectType() << " o=" << (*it)->m_origin << "  s=" << (*it)->m_size);
 			m_subWidget[iii]->systemDraw(prop);
 		}
@@ -187,7 +187,7 @@ void ewol::widget::ContainerN::systemDraw(const ewol::DrawProperty& _displayProp
 
 void ewol::widget::ContainerN::onChangeSize() {
 	for (auto &it : m_subWidget) {
-		if (it == nullptr) {
+		if (it == null) {
 			continue;
 		}
 		it->setOrigin(m_origin+m_offset);
@@ -202,7 +202,7 @@ void ewol::widget::ContainerN::calculateMinMaxSize() {
 	m_maxSize.setValue(ULTIMATE_MAX_SIZE,ULTIMATE_MAX_SIZE);
 	//EWOL_ERROR("[" << getId() << "] {" << getObjectType() << "} set min size : " <<  m_minSize);
 	for (auto &it : m_subWidget) {
-		if (it != nullptr) {
+		if (it != null) {
 			it->calculateMinMaxSize();
 			bvec2 subExpendProp = it->canExpand();
 			if (true == subExpendProp.x()) {
@@ -221,7 +221,7 @@ void ewol::widget::ContainerN::calculateMinMaxSize() {
 
 void ewol::widget::ContainerN::onRegenerateDisplay() {
 	for (auto &it : m_subWidget) {
-		if (it != nullptr) {
+		if (it != null) {
 			it->onRegenerateDisplay();
 		}
 	}
@@ -229,18 +229,18 @@ void ewol::widget::ContainerN::onRegenerateDisplay() {
 
 ewol::WidgetShared ewol::widget::ContainerN::getWidgetAtPos(const vec2& _pos) {
 	if (*propertyHide == true) {
-		return nullptr;
+		return null;
 	}
 	// for all element in the sizer ...
 	for (auto &it : m_subWidget) {
-		if (it != nullptr) {
+		if (it != null) {
 			vec2 tmpSize = it->getSize();
 			vec2 tmpOrigin = it->getOrigin();
 			if(    (tmpOrigin.x() <= _pos.x() && tmpOrigin.x() + tmpSize.x() >= _pos.x())
 			    && (tmpOrigin.y() <= _pos.y() && tmpOrigin.y() + tmpSize.y() >= _pos.y()) )
 			{
 				ewol::WidgetShared tmpWidget = it->getWidgetAtPos(_pos);
-				if (tmpWidget != nullptr) {
+				if (tmpWidget != null) {
 					return tmpWidget;
 				}
 				// stop searching
@@ -248,7 +248,7 @@ ewol::WidgetShared ewol::widget::ContainerN::getWidgetAtPos(const vec2& _pos) {
 			}
 		}
 	}
-	return nullptr;
+	return null;
 };
 
 bool ewol::widget::ContainerN::loadXML(const exml::Element& _node) {
@@ -284,7 +284,7 @@ bool ewol::widget::ContainerN::loadXML(const exml::Element& _node) {
 		}
 		EWOL_DEBUG("[" << getId() << "] {" << getObjectType() << "} load new element : '" << widgetName << "'");
 		ewol::WidgetShared subWidget = getWidgetManager().create(widgetName, pNode);
-		if (subWidget == nullptr) {
+		if (subWidget == null) {
 			EWOL_ERROR ("[" << getId() << "] {" << getObjectType() << "} (l " << pNode.getPos() << ") Can not create the widget : '" << widgetName << "'");
 			continue;
 		}
@@ -315,7 +315,7 @@ void ewol::widget::ContainerN::requestDestroyFromChild(const ewol::ObjectShared&
 	auto it = m_subWidget.begin();
 	while (it != m_subWidget.end()) {
 		if (*it == _child) {
-			if (*it == nullptr) {
+			if (*it == null) {
 				m_subWidget.erase(it);
 				it = m_subWidget.begin();
 				continue;
@@ -335,7 +335,7 @@ void ewol::widget::ContainerN::drawWidgetTree(int32_t _level) {
 	ewol::Widget::drawWidgetTree(_level);
 	_level++;
 	for (auto &it: m_subWidget) {
-		if (it != nullptr) {
+		if (it != null) {
 			it->drawWidgetTree(_level);
 		}
 	}
diff --git a/ewol/widget/ContextMenu.cpp b/ewol/widget/ContextMenu.cpp
index 3e1abe2f..1006d6cd 100644
--- a/ewol/widget/ContextMenu.cpp
+++ b/ewol/widget/ContextMenu.cpp
@@ -60,7 +60,7 @@ void ewol::widget::ContextMenu::onChangeSize() {
 	// pop-up fill all the display :
 	ewol::Padding padding = m_shaper.getPadding();
 	EWOL_VERBOSE("our origin=" << m_origin << " size=" << m_size);
-	if (m_subWidget == nullptr) {
+	if (m_subWidget == null) {
 		return;
 	}
 	vec2 subWidgetSize(0,0);
@@ -149,7 +149,7 @@ void ewol::widget::ContextMenu::onRegenerateDisplay() {
 	m_shaper.clear();
 	ewol::Padding padding = m_shaper.getPadding();
 	
-	if (m_subWidget == nullptr) {
+	if (m_subWidget == null) {
 		return;
 	}
 	vec2 tmpSize = m_subWidget->getSize();
@@ -207,7 +207,7 @@ void ewol::widget::ContextMenu::onRegenerateDisplay() {
 
 bool ewol::widget::ContextMenu::onEventInput(const ewol::event::Input& _event) {
 	if (_event.getId() > 0) {
-		if (ewol::widget::Container::getWidgetAtPos(_event.getPos()) != nullptr) {
+		if (ewol::widget::Container::getWidgetAtPos(_event.getPos()) != null) {
 			return false;
 		}
 		if(    _event.getStatus() == gale::key::status::down
@@ -226,7 +226,7 @@ bool ewol::widget::ContextMenu::onEventInput(const ewol::event::Input& _event) {
 
 ewol::WidgetShared ewol::widget::ContextMenu::getWidgetAtPos(const vec2& _pos) {
 	ewol::WidgetShared val = ewol::widget::Container::getWidgetAtPos(_pos);
-	if (val != nullptr) {
+	if (val != null) {
 		return val;
 	}
 	return ememory::dynamicPointerCast<ewol::Widget>(sharedFromThis());
diff --git a/ewol/widget/Gird.cpp b/ewol/widget/Gird.cpp
index 38b63aea..503662bd 100644
--- a/ewol/widget/Gird.cpp
+++ b/ewol/widget/Gird.cpp
@@ -13,7 +13,7 @@ ETK_DECLARE_TYPE(ewol::widget::Gird);
 
 ewol::widget::Gird::Gird() :
   m_sizeRow(0),
-  m_tmpWidget(nullptr),
+  m_tmpWidget(null),
   m_gavityButtom(true),
   m_borderSize(0,0) {
 	addObjectType("ewol::widget::Gird");
@@ -44,7 +44,7 @@ void ewol::widget::Gird::onChangeSize() {
 	m_size -= m_borderSize*2;
 	
 	for (size_t iii=0; iii<m_subWidget.size(); iii++) {
-		if (m_subWidget[iii].widget != nullptr) {
+		if (m_subWidget[iii].widget != null) {
 			//calculate the origin :
 			vec2 tmpOrigin = m_origin + m_borderSize;
 			if (false == m_gavityButtom) {
@@ -94,7 +94,7 @@ void ewol::widget::Gird::calculateMinMaxSize() {
 			// change of line : 
 			lastLineID = m_subWidget[iii].row;
 		}
-		if (m_subWidget[iii].widget != nullptr) {
+		if (m_subWidget[iii].widget != null) {
 			m_subWidget[iii].widget->calculateMinMaxSize();
 			vec2 tmpSize = m_subWidget[iii].widget->getCalculateMinSize();
 			EWOL_DEBUG("     [" << iii << "] subWidgetMinSize=" << tmpSize);
@@ -130,7 +130,7 @@ void ewol::widget::Gird::setColNumber(int32_t _colNumber) {
 		for (int64_t iii=m_subWidget.size(); iii >= 0; iii--) {
 			if (m_subWidget[iii].col > (_colNumber-1)) {
 				// out of bounds : must remove it ...
-				if (m_subWidget[iii].widget != nullptr) {
+				if (m_subWidget[iii].widget != null) {
 					m_subWidget[iii].widget.reset();
 					// no remove, this element is removed with the function onObjectRemove  == > it does not exist anymore ...
 					if (errorControl == m_subWidget.size()) {
@@ -189,7 +189,7 @@ void ewol::widget::Gird::subWidgetRemoveAll() {
 
 
 void ewol::widget::Gird::subWidgetAdd(int32_t _colId, int32_t _rowId, ewol::WidgetShared _newWidget) {
-	if (_newWidget == nullptr) {
+	if (_newWidget == null) {
 		return;
 	}
 	GirdProperties prop;
@@ -216,11 +216,11 @@ void ewol::widget::Gird::subWidgetAdd(int32_t _colId, int32_t _rowId, ewol::Widg
 				// The element already exist  == > replace it ...
 				m_tmpWidget = m_subWidget[iii].widget;
 				m_subWidget[iii].widget = _newWidget;
-				if (m_tmpWidget != nullptr) {
+				if (m_tmpWidget != null) {
 					m_tmpWidget.reset();
-					if (m_tmpWidget != nullptr) {
+					if (m_tmpWidget != null) {
 						EWOL_CRITICAL("[" << getId() << "] Error while replacing a widget ...  == > never call when free");
-						m_tmpWidget = nullptr;
+						m_tmpWidget = null;
 					}
 				}
 			}
@@ -259,7 +259,7 @@ void ewol::widget::Gird::subWidgetRemove(int32_t _colId, int32_t _rowId) {
 }
 
 void ewol::widget::Gird::subWidgetUnLink(ewol::WidgetShared _newWidget) {
-	if (_newWidget == nullptr) {
+	if (_newWidget == null) {
 		return;
 	}
 	for (size_t iii=0; iii<m_subWidget.size(); iii++) {
@@ -290,7 +290,7 @@ void ewol::widget::Gird::subWidgetUnLink(int32_t _colId, int32_t _rowId) {
 void ewol::widget::Gird::systemDraw(const ewol::DrawProperty& _displayProp) {
 	ewol::Widget::systemDraw(_displayProp);
 	for (auto &it : m_subWidget) {
-		if (it.widget != nullptr) {
+		if (it.widget != null) {
 			it.widget->systemDraw(_displayProp);
 		}
 	}
@@ -298,7 +298,7 @@ void ewol::widget::Gird::systemDraw(const ewol::DrawProperty& _displayProp) {
 
 void ewol::widget::Gird::onRegenerateDisplay() {
 	for (auto &it : m_subWidget) {
-		if (it.widget != nullptr) {
+		if (it.widget != null) {
 			it.widget->onRegenerateDisplay();
 		}
 	}
@@ -306,11 +306,11 @@ void ewol::widget::Gird::onRegenerateDisplay() {
 
 ewol::WidgetShared ewol::widget::Gird::getWidgetAtPos(const vec2& _pos) {
 	if (*propertyHide == true) {
-		return nullptr;
+		return null;
 	}
 	// for all element in the sizer ...
 	for (auto &it : m_subWidget) {
-		if (it.widget == nullptr) {
+		if (it.widget == null) {
 			continue;
 		}
 		vec2 tmpSize = it.widget->getSize();
@@ -318,13 +318,13 @@ ewol::WidgetShared ewol::widget::Gird::getWidgetAtPos(const vec2& _pos) {
 		if(    (tmpOrigin.x() <= _pos.x() && tmpOrigin.x() + tmpSize.x() >= _pos.x())
 		    && (tmpOrigin.y() <= _pos.y() && tmpOrigin.y() + tmpSize.y() >= _pos.y()) ) {
 			ewol::WidgetShared tmpWidget = it.widget->getWidgetAtPos(_pos);
-			if (tmpWidget != nullptr) {
+			if (tmpWidget != null) {
 				return tmpWidget;
 			}
 			// stop searching
 			break;
 		}
 	}
-	return nullptr;
+	return null;
 }
 
diff --git a/ewol/widget/Image.cpp b/ewol/widget/Image.cpp
index eacc92f4..268e51b2 100644
--- a/ewol/widget/Image.cpp
+++ b/ewol/widget/Image.cpp
@@ -24,12 +24,12 @@ ewol::widget::Image::Image() :
   propertyDistanceFieldMode(this, "distance-field", false, "Distance field mode", &ewol::widget::Image::onChangePropertyDistanceFieldMode),
   propertySmooth(this, "smooth", true, "Smooth display of the image", &ewol::widget::Image::onChangePropertySmooth),
   propertyUseThemeColor(this, "use-theme-color", false, "use the theme color to display images", &ewol::widget::Image::onChangePropertyUseThemeColor),
-  m_colorProperty(nullptr),
+  m_colorProperty(null),
   m_colorId(-1) {
 	addObjectType("ewol::widget::Image");
 	m_imageRenderSize = vec2(0,0);
 	m_colorProperty = ewol::resource::ColorFile::create("{ewol}THEME:COLOR:Image.json");
-	if (m_colorProperty != nullptr) {
+	if (m_colorProperty != null) {
 		m_colorId = m_colorProperty->request("foreground");
 	}
 }
@@ -68,7 +68,7 @@ void ewol::widget::Image::onRegenerateDisplay() {
 	// remove data of the previous composition :
 	m_compositing.clear();
 	if (    *propertyUseThemeColor == true
-	     && m_colorProperty != nullptr) {
+	     && m_colorProperty != null) {
 		m_compositing.setColor(m_colorProperty->get(m_colorId));
 	}
 	// Calculate the new position and size:
diff --git a/ewol/widget/Joystick.cpp b/ewol/widget/Joystick.cpp
index 2c019c70..d93b2f05 100644
--- a/ewol/widget/Joystick.cpp
+++ b/ewol/widget/Joystick.cpp
@@ -52,9 +52,9 @@ void ewol::widget::Joystick::onRegenerateDisplay() {
 		// clean the object list ...
 		
 		/*
-		ewol::OObject2DColored * tmpOObjects = nullptr;
-		ewol::OObject2DTextured * tmpOOtexBg = nullptr;
-		ewol::OObject2DTextured * tmpOOtexFg = nullptr;
+		ewol::OObject2DColored * tmpOObjects = null;
+		ewol::OObject2DTextured * tmpOOtexBg = null;
+		ewol::OObject2DTextured * tmpOOtexFg = null;
 		// set background
 		if (true == m_displayBackground) {
 			if (m_background == "") {
@@ -69,7 +69,7 @@ void ewol::widget::Joystick::onRegenerateDisplay() {
 		// set cursor point
 		float sizeElement = m_size.x*m_ratio;
 		if (m_foreground == "") {
-			if (nullptr == tmpOObjects) {
+			if (null == tmpOObjects) {
 				tmpOObjects = ne w ewol::OObject2DColored;
 			}
 			tmpOObjects->setColor(m_colorFg);
@@ -81,13 +81,13 @@ void ewol::widget::Joystick::onRegenerateDisplay() {
 			                      ((m_displayPos.y+1.0)/2.0)*(m_size.y-2*sizeElement), sizeElement*2, sizeElement*2);
 		}
 		// add all needed objects ...
-		if (nullptr != tmpOObjects) {
+		if (null != tmpOObjects) {
 			addOObject(tmpOObjects);
 		}
-		if (nullptr != tmpOOtexBg) {
+		if (null != tmpOOtexBg) {
 			addOObject(tmpOOtexBg);
 		}
-		if (nullptr != tmpOOtexFg) {
+		if (null != tmpOOtexFg) {
 			addOObject(tmpOOtexFg);
 		}
 		*/
diff --git a/ewol/widget/Label.cpp b/ewol/widget/Label.cpp
index 5e8bf3e2..94677efb 100644
--- a/ewol/widget/Label.cpp
+++ b/ewol/widget/Label.cpp
@@ -24,12 +24,12 @@ ewol::widget::Label::Label() :
                       "displayed value string",
                       &ewol::widget::Label::onChangePropertyValue),
   m_value(U""),
-  m_colorProperty(nullptr),
+  m_colorProperty(null),
   m_colorDefaultFgText(-1),
   m_colorDefaultBgText(-1){
 	addObjectType("ewol::widget::Label");
 	m_colorProperty = ewol::resource::ColorFile::create("{ewol}THEME:COLOR:Label.json");
-	if (m_colorProperty != nullptr) {
+	if (m_colorProperty != null) {
 		m_colorDefaultFgText = m_colorProperty->request("foreground");
 		m_colorDefaultBgText = m_colorProperty->request("background");
 	}
@@ -115,7 +115,7 @@ void ewol::widget::Label::onRegenerateDisplay() {
 	
 	// clean the element
 	m_text.reset();
-	if (m_colorProperty != nullptr) {
+	if (m_colorProperty != null) {
 		m_text.setDefaultColorFg(m_colorProperty->get(m_colorDefaultFgText));
 		m_text.setDefaultColorBg(m_colorProperty->get(m_colorDefaultBgText));
 	}
diff --git a/ewol/widget/Layer.cpp b/ewol/widget/Layer.cpp
index e4aecae7..d9a1cc96 100644
--- a/ewol/widget/Layer.cpp
+++ b/ewol/widget/Layer.cpp
@@ -20,11 +20,11 @@ ewol::widget::Layer::~Layer() {
 
 ewol::WidgetShared ewol::widget::Layer::getWidgetAtPos(const vec2& _pos) {
 	if (*propertyHide == true) {
-		return nullptr;
+		return null;
 	}
 	// for all element in the sizer ...
 	for (auto &it : m_subWidget) {
-		if (it == nullptr) {
+		if (it == null) {
 			continue;
 		}
 		vec2 tmpSize = it->getSize();
@@ -32,12 +32,12 @@ ewol::WidgetShared ewol::widget::Layer::getWidgetAtPos(const vec2& _pos) {
 		if(    (tmpOrigin.x() <= _pos.x() && tmpOrigin.x() + tmpSize.x() >= _pos.x())
 		    && (tmpOrigin.y() <= _pos.y() && tmpOrigin.y() + tmpSize.y() >= _pos.y()) ) {
 			ewol::WidgetShared tmpWidget = it->getWidgetAtPos(_pos);
-			if (tmpWidget != nullptr) {
+			if (tmpWidget != null) {
 				return tmpWidget;
 			}
 			// parse the next layer ...
 		}
 	}
-	return nullptr;
+	return null;
 };
 
diff --git a/ewol/widget/List.cpp b/ewol/widget/List.cpp
index cdcce133..e35c5c0d 100644
--- a/ewol/widget/List.cpp
+++ b/ewol/widget/List.cpp
@@ -29,7 +29,7 @@ ewol::widget::List::~List() {
 	//clean all the object
 	for (size_t iii=0; iii<m_listOObject.size(); iii++) {
 		ETK_DELETE(ewol::Compositing, m_listOObject[iii]);
-		m_listOObject[iii] = nullptr;
+		m_listOObject[iii] = null;
 	}
 	m_listOObject.clear();
 }
@@ -71,7 +71,7 @@ void ewol::widget::List::calculateMinMaxSize() {
 }
 
 void ewol::widget::List::addOObject(ewol::Compositing* _newObject, int32_t _pos) {
-	if (_newObject == nullptr) {
+	if (_newObject == null) {
 		EWOL_ERROR("Try to add an empty object in the Widget generic display system");
 		return;
 	}
@@ -86,14 +86,14 @@ void ewol::widget::List::addOObject(ewol::Compositing* _newObject, int32_t _pos)
 void ewol::widget::List::clearOObjectList() {
 	for (size_t iii=0; iii<m_listOObject.size(); iii++) {
 		ETK_DELETE(ewol::Compositing, m_listOObject[iii]);
-		m_listOObject[iii] = nullptr;
+		m_listOObject[iii] = null;
 	}
 	m_listOObject.clear();
 }
 
 void ewol::widget::List::onDraw() {
 	for (size_t iii=0; iii<m_listOObject.size(); iii++) {
-		if (m_listOObject[iii] != nullptr) {
+		if (m_listOObject[iii] != null) {
 			m_listOObject[iii]->draw();
 		}
 	}
@@ -171,7 +171,7 @@ void ewol::widget::List::onRegenerateDisplay() {
 				getElement(jjj, iii, myTextToWrite, fg, bg);
 				
 				ewol::compositing::Text * tmpText = ETK_NEW(ewol::compositing::Text);
-				if (nullptr != tmpText) {
+				if (null != tmpText) {
 					// get font size : 
 					int32_t tmpFontHeight = tmpText->calculateSize(char32_t('A')).y();
 					displayPositionY-=(tmpFontHeight+m_paddingSizeY);
diff --git a/ewol/widget/ListFileSystem.cpp b/ewol/widget/ListFileSystem.cpp
index 2cee46d6..648076c5 100644
--- a/ewol/widget/ListFileSystem.cpp
+++ b/ewol/widget/ListFileSystem.cpp
@@ -46,7 +46,7 @@ ewol::widget::ListFileSystem::ListFileSystem() :
 		propertyPath.setDirectCheck("c:/");
 	#endif
 	m_colorProperty = ewol::resource::ColorFile::create("{ewol}THEME:COLOR:ListFileSystem.json");
-	if (m_colorProperty != nullptr) {
+	if (m_colorProperty != null) {
 		m_colorIdText = m_colorProperty->request("text");
 		m_colorIdBackground1 = m_colorProperty->request("background1");
 		m_colorIdBackground2 = m_colorProperty->request("background2");
@@ -61,9 +61,9 @@ ewol::widget::ListFileSystem::~ListFileSystem() {
 
 void ewol::widget::ListFileSystem::clearList() {
 	for (auto &it : m_list) {
-		if (it != nullptr) {
+		if (it != null) {
 			ETK_DELETE(etk::FSNode, it);
-			it = nullptr;
+			it = null;
 		}
 	}
 }
@@ -88,7 +88,7 @@ void ewol::widget::ListFileSystem::regenerateView() {
 etk::String ewol::widget::ListFileSystem::getSelect() const {
 	etk::String tmpVal = "";
 	if (m_selectedLine >= 0) {
-		if (m_list[m_selectedLine] != nullptr) {
+		if (m_list[m_selectedLine] != null) {
 			tmpVal = m_list[m_selectedLine]->getNameFile();
 		}
 	}
@@ -101,7 +101,7 @@ void ewol::widget::ListFileSystem::setSelect(const etk::String& _data) {
 	m_selectedLine = -1;
 	// search the coresponding file :
 	for (size_t iii=0; iii<m_list.size(); ++iii) {
-		if (m_list[iii] != nullptr) {
+		if (m_list[iii] != null) {
 			if (m_list[iii]->getNameFile() == _data) {
 				// we find the line :
 				m_selectedLine = iii;
@@ -150,7 +150,7 @@ bool ewol::widget::ListFileSystem::getElement(int32_t _colomn, int32_t _raw, etk
 	}
 	if(    _raw-offset >= 0
 	    && _raw-offset < (int32_t)m_list.size()
-	    && m_list[_raw-offset] != nullptr) {
+	    && m_list[_raw-offset] != null) {
 		_myTextToWrite = m_list[_raw-offset]->getNameFile();
 		EWOL_VERBOSE("get filename for : '" << *m_list[_raw-offset] << ":'" << _myTextToWrite << "'");
 	}
@@ -201,7 +201,7 @@ bool ewol::widget::ListFileSystem::onItemEvent(int32_t _IdInput,
 					signalFolderSelect.emit("..");
 				} else if(    m_selectedLine-offset  >= 0
 				           && m_selectedLine-offset < (int32_t)m_list.size()
-				           && nullptr != m_list[m_selectedLine-offset] ) {
+				           && null != m_list[m_selectedLine-offset] ) {
 					// generate event extern : 
 					switch(m_list[m_selectedLine-offset]->getNodeType()) {
 						case etk::typeNode_file :
@@ -226,7 +226,7 @@ bool ewol::widget::ListFileSystem::onItemEvent(int32_t _IdInput,
 					signalFolderValidate.emit("..");
 				} else if(    m_selectedLine-offset >= 0
 				           && m_selectedLine-offset < (int32_t)m_list.size()
-				           && nullptr != m_list[m_selectedLine-offset] ) {
+				           && null != m_list[m_selectedLine-offset] ) {
 					switch(m_list[m_selectedLine-offset]->getNodeType()) {
 						case etk::typeNode_file :
 							signalFileValidate.emit(m_list[m_selectedLine-offset]->getNameFile());
diff --git a/ewol/widget/Manager.cpp b/ewol/widget/Manager.cpp
index 4eabbd4f..9bb0271d 100644
--- a/ewol/widget/Manager.cpp
+++ b/ewol/widget/Manager.cpp
@@ -65,7 +65,7 @@ ewol::widget::Manager::Manager() :
 ewol::widget::Manager::~Manager() {
 	EWOL_DEBUG(" == > Un-Init Widget-Manager");
 	EWOL_INFO("Realease all FOCUS");
-	focusSetDefault(nullptr);
+	focusSetDefault(null);
 	focusRelease();
 	
 	m_creatorList.clear();
@@ -76,7 +76,7 @@ ewol::widget::Manager::~Manager() {
  * *************************************************************************/
 
 void ewol::widget::Manager::focusKeep(ewol::WidgetShared _newWidget) {
-	if (_newWidget == nullptr) {
+	if (_newWidget == null) {
 		// nothing to do ...
 		return;
 	}
@@ -87,7 +87,7 @@ void ewol::widget::Manager::focusKeep(ewol::WidgetShared _newWidget) {
 		// nothing to do ...
 		return;
 	}
-	if (focusWidgetCurrent != nullptr) {
+	if (focusWidgetCurrent != null) {
 		EWOL_DEBUG("Rm focus on WidgetID=" << focusWidgetCurrent->getId() );
 		focusWidgetCurrent->rmFocus();
 		focusWidgetCurrent.reset();
@@ -97,14 +97,14 @@ void ewol::widget::Manager::focusKeep(ewol::WidgetShared _newWidget) {
 		return;
 	}
 	m_focusWidgetCurrent = _newWidget;
-	if (_newWidget != nullptr) {
+	if (_newWidget != null) {
 		EWOL_DEBUG("Set focus on WidgetID=" << _newWidget->getId() );
 		_newWidget->setFocus();
 	}
 }
 
 void ewol::widget::Manager::focusSetDefault(ewol::WidgetShared _newWidget) {
-	if(    _newWidget != nullptr
+	if(    _newWidget != null
 	    && _newWidget->propertyCanFocus.get() == false) {
 		EWOL_VERBOSE("Widget can not have focus, id=" << _newWidget->getId() );
 		return;
@@ -112,12 +112,12 @@ void ewol::widget::Manager::focusSetDefault(ewol::WidgetShared _newWidget) {
 	ewol::WidgetShared focusWidgetDefault = m_focusWidgetDefault.lock();
 	ewol::WidgetShared focusWidgetCurrent = m_focusWidgetCurrent.lock();
 	if (focusWidgetDefault == focusWidgetCurrent) {
-		if (focusWidgetCurrent != nullptr) {
+		if (focusWidgetCurrent != null) {
 			EWOL_DEBUG("Rm focus on WidgetID=" << focusWidgetCurrent->getId() );
 			focusWidgetCurrent->rmFocus();
 		}
 		m_focusWidgetCurrent = _newWidget;
-		if (_newWidget != nullptr) {
+		if (_newWidget != null) {
 			EWOL_DEBUG("Set focus on WidgetID=" << _newWidget->getId() );
 			_newWidget->setFocus();
 		}
@@ -132,13 +132,13 @@ void ewol::widget::Manager::focusRelease() {
 		// nothink to do ...
 		return;
 	}
-	if (focusWidgetCurrent != nullptr) {
+	if (focusWidgetCurrent != null) {
 		EWOL_DEBUG("Rm focus on WidgetID=" << focusWidgetCurrent->getId() );
 		focusWidgetCurrent->rmFocus();
 	}
 	m_focusWidgetCurrent = m_focusWidgetDefault;
 	focusWidgetCurrent = m_focusWidgetCurrent.lock();
-	if (focusWidgetCurrent != nullptr) {
+	if (focusWidgetCurrent != null) {
 		EWOL_DEBUG("Set focus on WidgetID=" << focusWidgetCurrent->getId() );
 		focusWidgetCurrent->setFocus();
 	}
@@ -157,7 +157,7 @@ void ewol::widget::Manager::markDrawingIsNeeded() {
 		return;
 	}
 	m_haveRedraw = true;
-	if (m_funcRedrawNeeded != nullptr) {
+	if (m_funcRedrawNeeded != null) {
 		m_funcRedrawNeeded();
 	}
 }
@@ -172,8 +172,8 @@ bool ewol::widget::Manager::isDrawingNeeded() {
 void ewol::widget::Manager::addWidgetCreator(const etk::String& _name,
                                              ewol::widget::Manager::widgetCreatorFunction _pointer,
                                              ewol::widget::Manager::widgetCreatorFunctionXml _pointerXml) {
-	if (    _pointer == nullptr
-	     || _pointerXml == nullptr) {
+	if (    _pointer == null
+	     || _pointerXml == null) {
 		return;
 	}
 	//Keep name in lower case :
@@ -207,24 +207,24 @@ ewol::WidgetShared ewol::widget::Manager::create(const etk::String& _name) {
 	etk::String nameLower = etk::toLower(_name);
 	auto it = m_creatorList.find(nameLower);
 	if (it != m_creatorList.end()) {
-		if (it->second != nullptr) {
+		if (it->second != null) {
 			return it->second();
 		}
 	}
 	EWOL_WARNING("try to create an UnExistant widget : " << nameLower);
-	return nullptr;
+	return null;
 }
 
 ewol::WidgetShared ewol::widget::Manager::create(const etk::String& _name, const exml::Element& _node) {
 	etk::String nameLower = etk::toLower(_name);
 	auto it = m_creatorListXml.find(nameLower);
 	if (it != m_creatorListXml.end()) {
-		if (it->second != nullptr) {
+		if (it->second != null) {
 			return it->second(_node);
 		}
 	}
 	EWOL_WARNING("try to create an UnExistant widget : " << nameLower);
-	return nullptr;
+	return null;
 }
 
 bool ewol::widget::Manager::exist(const etk::String& _name) {
diff --git a/ewol/widget/Manager.hpp b/ewol/widget/Manager.hpp
index ce592093..a726e47d 100644
--- a/ewol/widget/Manager.hpp
+++ b/ewol/widget/Manager.hpp
@@ -62,14 +62,14 @@ namespace ewol {
 				/**
 				 * @brief Create a widget with his name.
 				 * @param[in] _name Name of the widget to create.
-				 * @return The widget created (nullptr if it does not exist).
+				 * @return The widget created (null if it does not exist).
 				 */
 				ewol::WidgetShared create(const etk::String& _name);
 				/**
 				 * @brief Create a widget with his name.
 				 * @param[in] _name Name of the widget to create.
 				 * @param[in] _node Reference on the XML node.
-				 * @return The widget created (nullptr if it does not exist).
+				 * @return The widget created (null if it does not exist).
 				 */
 				ewol::WidgetShared create(const etk::String& _name, const exml::Element& _node);
 				/**
diff --git a/ewol/widget/Menu.cpp b/ewol/widget/Menu.cpp
index 79b968e7..e3348cf0 100644
--- a/ewol/widget/Menu.cpp
+++ b/ewol/widget/Menu.cpp
@@ -83,7 +83,7 @@ int32_t ewol::widget::Menu::add(int32_t _parent,
 	tmpObject.m_message = _message;
 	if (tmpObject.m_parentId == -1) {
 		ewol::widget::ButtonShared myButton = ewol::widget::Button::create();
-		if (myButton == nullptr) {
+		if (myButton == null) {
 			EWOL_ERROR("Allocation button error");
 			return tmpObject.m_localId;
 		}
@@ -126,7 +126,7 @@ int32_t ewol::widget::Menu::addSpacer(int32_t _parent) {
 	tmpObject.m_message = "";
 	if (tmpObject.m_parentId == -1) {
 		ewol::widget::SpacerShared mySpacer = ewol::widget::Spacer::create();
-		if (mySpacer == nullptr) {
+		if (mySpacer == null) {
 			EWOL_ERROR("Allocation spacer error");
 			return tmpObject.m_localId;
 		}
@@ -144,7 +144,7 @@ int32_t ewol::widget::Menu::addSpacer(int32_t _parent) {
 
 void ewol::widget::Menu::onButtonPressed(ewol::widget::ButtonWeak _button) {
 	ewol::widget::ButtonShared caller = _button.lock();
-	if (caller == nullptr) {
+	if (caller == null) {
 		return;
 	}
 	for (auto &it : m_listElement) {
@@ -157,7 +157,7 @@ void ewol::widget::Menu::onButtonPressed(ewol::widget::ButtonWeak _button) {
 			// Send a multicast event ...
 			signalSelect.emit(it.m_message);
 			ewol::widget::ContextMenuShared tmpContext = m_widgetContextMenu.lock();
-			if (tmpContext != nullptr) {
+			if (tmpContext != null) {
 				EWOL_DEBUG("Mark the menu to remove ...");
 				tmpContext->destroy();
 			}
@@ -178,14 +178,14 @@ void ewol::widget::Menu::onButtonPressed(ewol::widget::ButtonWeak _button) {
 		// create a context menu:
 		ewol::widget::ContextMenuShared tmpContext = ewol::widget::ContextMenu::create();
 		m_widgetContextMenu = tmpContext;
-		if (tmpContext == nullptr) {
+		if (tmpContext == null) {
 			EWOL_ERROR("Allocation Error");
 			return;
 		}
 		// get the button widget:
 		vec2 newPosition;
 		ewol::WidgetShared eventFromWidget = ememory::dynamicPointerCast<ewol::Widget>(caller);
-		if (eventFromWidget != nullptr) {
+		if (eventFromWidget != null) {
 			vec2 tmpOri  = eventFromWidget->getOrigin();
 			vec2 tmpSize = eventFromWidget->getSize();
 			// calculate the correct position
@@ -196,7 +196,7 @@ void ewol::widget::Menu::onButtonPressed(ewol::widget::ButtonWeak _button) {
 		ewol::widget::SizerShared mySizer;
 		ewol::widget::ButtonShared myButton;
 		mySizer = ewol::widget::Sizer::create();
-		if (mySizer != nullptr) {
+		if (mySizer != null) {
 			mySizer->propertyMode.set(widget::Sizer::modeVert);
 			mySizer->propertyLockExpand.set(vec2(true,true));
 			mySizer->propertyFill.set(vec2(true,true));
@@ -218,7 +218,7 @@ void ewol::widget::Menu::onButtonPressed(ewol::widget::ButtonWeak _button) {
 				}
 				if (m_listElement[iii].m_message == "" && m_listElement[iii].m_label == "") {
 					ewol::widget::SpacerShared mySpacer = ewol::widget::Spacer::create();
-					if (mySpacer == nullptr) {
+					if (mySpacer == null) {
 						EWOL_ERROR("Allocation spacer error");
 						continue;
 					}
@@ -231,7 +231,7 @@ void ewol::widget::Menu::onButtonPressed(ewol::widget::ButtonWeak _button) {
 					mySizer->subWidgetAdd(mySpacer);
 				} else {
 					myButton = ewol::widget::Button::create();
-					if (myButton == nullptr) {
+					if (myButton == null) {
 						EWOL_ERROR("Allocation Error");
 						continue;
 					}
@@ -263,7 +263,7 @@ void ewol::widget::Menu::onButtonPressed(ewol::widget::ButtonWeak _button) {
 							    );
 						} else {
 							ewol::widget::LabelShared tmpLabel = widget::Label::create();
-							if (tmpLabel != nullptr) {
+							if (tmpLabel != null) {
 								tmpLabel->propertyValue.set(etk::String("<left>") + m_listElement[iii].m_label + "</left>\n");
 								tmpLabel->propertyExpand.set(bvec2(true,false));
 								tmpLabel->propertyFill.set(bvec2(true,true));
@@ -276,7 +276,7 @@ void ewol::widget::Menu::onButtonPressed(ewol::widget::ButtonWeak _button) {
 			}
 		}
 		ewol::widget::WindowsShared currentWindows = getWindows();
-		if (currentWindows == nullptr) {
+		if (currentWindows == null) {
 			EWOL_ERROR("Can not get the curent Windows...");
 		} else {
 			currentWindows->popUpWidgetPush(tmpContext);
diff --git a/ewol/widget/PopUp.cpp b/ewol/widget/PopUp.cpp
index 9d9d5135..a5b8b5dd 100644
--- a/ewol/widget/PopUp.cpp
+++ b/ewol/widget/PopUp.cpp
@@ -44,7 +44,7 @@ ewol::widget::PopUp::~PopUp() {
 
 void ewol::widget::PopUp::onChangeSize() {
 	markToRedraw();
-	if (m_subWidget == nullptr) {
+	if (m_subWidget == null) {
 		return;
 	}
 	ewol::Padding padding = m_shaper.getPadding();
@@ -83,7 +83,7 @@ void ewol::widget::PopUp::systemDraw(const ewol::DrawProperty& _displayProp) {
 		return;
 	}
 	ewol::Widget::systemDraw(_displayProp);
-	if (m_subWidget == nullptr) {
+	if (m_subWidget == null) {
 		return;
 	}
 	if(    m_shaper.getNextDisplayedStatus() == -1
@@ -111,7 +111,7 @@ void ewol::widget::PopUp::onRegenerateDisplay() {
 		if (fill.y() == true) {
 			tmpSize.setY(m_size.y()-padding.y());
 		}
-		if (m_subWidget != nullptr) {
+		if (m_subWidget != null) {
 			vec2 tmpSize = m_subWidget->getSize();
 		}
 		tmpSize.setMax(m_minSize);
@@ -122,14 +122,14 @@ void ewol::widget::PopUp::onRegenerateDisplay() {
 		                  vec2ClipInt32(tmpSize + vec2(padding.x(), padding.y())));
 	}
 	// SUBwIDGET GENERATION ...
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		m_subWidget->onRegenerateDisplay();
 	}
 }
 
 ewol::WidgetShared ewol::widget::PopUp::getWidgetAtPos(const vec2& _pos) {
 	ewol::WidgetShared val = ewol::widget::Container::getWidgetAtPos(_pos);
-	if (val != nullptr) {
+	if (val != null) {
 		return val;
 	}
 	return ememory::dynamicPointerCast<ewol::Widget>(sharedFromThis());
@@ -158,7 +158,7 @@ bool ewol::widget::PopUp::onEventInput(const ewol::event::Input& _event) {
 	}
 	ewol::Padding padding = m_shaper.getPadding();
 	vec2 tmpSize(0,0);
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		vec2 tmpSize = m_subWidget->getSize();
 	}
 	tmpSize.setMax(m_minSize);
diff --git a/ewol/widget/Scroll.cpp b/ewol/widget/Scroll.cpp
index 822f88b6..36aea9cd 100644
--- a/ewol/widget/Scroll.cpp
+++ b/ewol/widget/Scroll.cpp
@@ -66,7 +66,7 @@ void ewol::widget::Scroll::onChangeSize() {
 	if (*propertyHide == true) {
 		return;
 	}
-	if (m_subWidget == nullptr) {
+	if (m_subWidget == null) {
 		return;
 	}
 	// remove the bar if hover
@@ -108,7 +108,7 @@ void ewol::widget::Scroll::calculateMinMaxSize() {
 	// Note: No call of container ==> normal case ...
 	ewol::Widget::calculateMinMaxSize();
 	// call sub classes
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		m_subWidget->calculateMinMaxSize();
 	}
 }
@@ -117,7 +117,7 @@ void ewol::widget::Scroll::systemDraw(const ewol::DrawProperty& _displayProp) {
 	if (*propertyHide == true) {
 		return;
 	}
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		ewol::DrawProperty prop = _displayProp;
 		prop.limit(m_origin, m_size);
 		m_subWidget->systemDraw(prop);
@@ -156,7 +156,7 @@ void ewol::widget::Scroll::onRegenerateDisplay() {
 	ewol::Padding paddingHori = m_shaperH.getPadding();
 	vec2 scrollOffset(0,0);
 	vec2 scrollSize(0,0);
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		scrollOffset = m_subWidget->getOffset();
 		scrollSize = m_subWidget->getSize();
 	}
@@ -192,7 +192,7 @@ bool ewol::widget::Scroll::onEventInput(const ewol::event::Input& _event) {
 	vec2 relativePos = relativePosition(_event.getPos());
 	vec2 scrollOffset(0,0);
 	vec2 scrollSize(0,0);
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		scrollOffset = m_subWidget->getOffset();
 		scrollSize = m_subWidget->getSize();
 	}
@@ -216,7 +216,7 @@ bool ewol::widget::Scroll::onEventInput(const ewol::event::Input& _event) {
 					scrollOffset.setY((int32_t)(scrollSize.y() * (relativePos.y()-SCROLL_BAR_SPACE) / (m_size.y()-SCROLL_BAR_SPACE*2)));
 					scrollOffset.setY(etk::avg(0.0f, scrollOffset.y(), (scrollSize.y() - m_size.y()*propertyLimit->y())));
 					markToRedraw();
-					if (m_subWidget != nullptr) {
+					if (m_subWidget != null) {
 						m_subWidget->setOffset(scrollOffset);
 					}
 					return true;
@@ -233,7 +233,7 @@ bool ewol::widget::Scroll::onEventInput(const ewol::event::Input& _event) {
 					scrollOffset.setX((int32_t)(scrollSize.x() * (relativePos.x()-SCROLL_BAR_SPACE) / (m_size.x()-SCROLL_BAR_SPACE*2)));
 					scrollOffset.setY(etk::avg(0.0f, scrollOffset.x(), (scrollSize.x() - m_size.x()*propertyLimit->x())));
 					markToRedraw();
-					if (m_subWidget != nullptr) {
+					if (m_subWidget != null) {
 						m_subWidget->setOffset(scrollOffset);
 					}
 					return true;
@@ -247,7 +247,7 @@ bool ewol::widget::Scroll::onEventInput(const ewol::event::Input& _event) {
 				scrollOffset.setY(scrollOffset.y()-m_pixelScrolling);
 				scrollOffset.setY(etk::avg(0.0f, scrollOffset.y(), (scrollSize.y() - m_size.y()*propertyLimit->y())));
 				markToRedraw();
-				if (m_subWidget != nullptr) {
+				if (m_subWidget != null) {
 					m_subWidget->setOffset(scrollOffset);
 				}
 				return true;
@@ -259,7 +259,7 @@ bool ewol::widget::Scroll::onEventInput(const ewol::event::Input& _event) {
 				scrollOffset.setY(scrollOffset.y()+m_pixelScrolling);
 				scrollOffset.setY(etk::avg(0.0f, scrollOffset.y(), (scrollSize.y() - m_size.y()*propertyLimit->y())));
 				markToRedraw();
-				if (m_subWidget != nullptr) {
+				if (m_subWidget != null) {
 					m_subWidget->setOffset(scrollOffset);
 				}
 				return true;
@@ -328,7 +328,7 @@ bool ewol::widget::Scroll::onEventInput(const ewol::event::Input& _event) {
 					markToRedraw();
 				}
 				scrollOffset.setY(etk::avg(0.0f, scrollOffset.y(), (scrollSize.y() - m_size.y()*propertyLimit->y())));
-				if (m_subWidget != nullptr) {
+				if (m_subWidget != null) {
 					m_subWidget->setOffset(scrollOffset);
 				}
 				return true;
@@ -338,7 +338,7 @@ bool ewol::widget::Scroll::onEventInput(const ewol::event::Input& _event) {
 				scrollOffset.setX((int32_t)(scrollSize.x() * (relativePos.x()-SCROLL_BAR_SPACE) / (m_size.x()-SCROLL_BAR_SPACE*2)));
 				scrollOffset.setX(etk::avg(0.0f, scrollOffset.x(), (scrollSize.x() - m_size.x()*propertyLimit->x() )));
 				markToRedraw();
-				if (m_subWidget != nullptr) {
+				if (m_subWidget != null) {
 					m_subWidget->setOffset(scrollOffset);
 				}
 				return true;
@@ -348,7 +348,7 @@ bool ewol::widget::Scroll::onEventInput(const ewol::event::Input& _event) {
 				scrollOffset.setY((int32_t)(scrollSize.y() * (relativePos.y()-SCROLL_BAR_SPACE) / (m_size.y()-SCROLL_BAR_SPACE*2)));
 				scrollOffset.setY(etk::avg(0.0f, scrollOffset.y(), (scrollSize.y() - m_size.y()*propertyLimit->x())));
 				markToRedraw();
-				if (m_subWidget != nullptr) {
+				if (m_subWidget != null) {
 					m_subWidget->setOffset(scrollOffset);
 				}
 				return true;
@@ -400,7 +400,7 @@ bool ewol::widget::Scroll::onEventInput(const ewol::event::Input& _event) {
 				m_highSpeedStartPos = relativePos;
 				EWOL_VERBOSE("SCROOL  == > MOVE " << scrollOffset);
 				markToRedraw();
-				if (m_subWidget != nullptr) {
+				if (m_subWidget != null) {
 					m_subWidget->setOffset(scrollOffset);
 				}
 				return true;
@@ -422,7 +422,7 @@ bool ewol::widget::Scroll::onEventInput(const ewol::event::Input& _event) {
 
 ewol::WidgetShared ewol::widget::Scroll::getWidgetAtPos(const vec2& _pos) {
 	ewol::WidgetShared tmpWidget = ewol::widget::Container::getWidgetAtPos(_pos);
-	if (tmpWidget != nullptr) {
+	if (tmpWidget != null) {
 		return tmpWidget;
 	}
 	return ememory::dynamicPointerCast<ewol::Widget>(sharedFromThis());;
diff --git a/ewol/widget/Select.cpp b/ewol/widget/Select.cpp
index 4c0eaeea..a26b36f8 100644
--- a/ewol/widget/Select.cpp
+++ b/ewol/widget/Select.cpp
@@ -45,7 +45,7 @@ ewol::widget::Select::~Select() {
 
 void ewol::widget::Select::onChangePropertyValue() {
 	markToRedraw();
-	if (m_widgetEntry == nullptr) {
+	if (m_widgetEntry == null) {
 		EWOL_ERROR("Can not acces at entry ...");
 		return;
 	}
@@ -63,7 +63,7 @@ void ewol::widget::Select::onChangePropertyValue() {
 }
 
 void ewol::widget::Select::optionSelectDefault() {
-	if (m_widgetEntry == nullptr) {
+	if (m_widgetEntry == null) {
 		EWOL_ERROR("Can not acces at entry ...");
 		return;
 	}
@@ -140,11 +140,11 @@ bool ewol::widget::Select::loadXML(const exml::Element& _node) {
 void ewol::widget::Select::updateGui() {
 	ewol::widget::SpinBase::updateGui();
 	
-	if (    m_widgetEntry != nullptr
+	if (    m_widgetEntry != null
 	     && m_connectionEntry.isConnected() == false) {
 		
 	}
-	if (    m_widgetButtonUp != nullptr
+	if (    m_widgetButtonUp != null
 	     && m_connectionButton.isConnected() == false) {
 		m_connectionButton = m_widgetButtonUp->signalPressed.connect(this, &ewol::widget::Select::onCallbackOpenMenu);
 	}
@@ -159,7 +159,7 @@ void ewol::widget::Select::onCallbackLabelPressed(int32_t _value) {
 void ewol::widget::Select::onCallbackOpenMenu() {
 	// create a context menu:
 	ewol::widget::ContextMenuShared tmpContext = ewol::widget::ContextMenu::create();
-	if (tmpContext == nullptr) {
+	if (tmpContext == null) {
 		EWOL_ERROR("Allocation Error");
 		return;
 	}
@@ -167,7 +167,7 @@ void ewol::widget::Select::onCallbackOpenMenu() {
 	tmpContext->setPositionMarkAuto(m_origin, m_size);
 	ewol::widget::SizerShared mySizer;
 	mySizer = ewol::widget::Sizer::create();
-	if (mySizer == nullptr) {
+	if (mySizer == null) {
 		EWOL_ERROR("Allocation Error or sizer");
 		return;
 	}
@@ -178,7 +178,7 @@ void ewol::widget::Select::onCallbackOpenMenu() {
 	tmpContext->setSubWidget(mySizer);
 	for (auto &it : m_listElement) {
 		ewol::widget::LabelShared myLabel = ewol::widget::Label::create();
-		if (myLabel == nullptr) {
+		if (myLabel == null) {
 			EWOL_ERROR("Allocation Error");
 			continue;
 		}
@@ -196,7 +196,7 @@ void ewol::widget::Select::onCallbackOpenMenu() {
 		mySizer->subWidgetAddStart(myLabel);
 	}
 	ewol::widget::WindowsShared currentWindows = getWindows();
-	if (currentWindows == nullptr) {
+	if (currentWindows == null) {
 		EWOL_ERROR("Can not get the curent Windows...");
 	} else {
 		currentWindows->popUpWidgetPush(tmpContext);
diff --git a/ewol/widget/Sizer.cpp b/ewol/widget/Sizer.cpp
index 75169ec5..d41a4600 100644
--- a/ewol/widget/Sizer.cpp
+++ b/ewol/widget/Sizer.cpp
@@ -50,7 +50,7 @@ void ewol::widget::Sizer::onChangeSize() {
 	vec2 minSize(0.0f, 0.0f);
 	ivec2 nbWidgetExpand(0,0);
 	for (auto &it : m_subWidget) {
-		if (it == nullptr) {
+		if (it == null) {
 			continue;
 		}
 		vec2 tmpSize = it->getCalculateMinSize();
@@ -79,7 +79,7 @@ void ewol::widget::Sizer::onChangeSize() {
 	}
 	// -3- Configure all at the min size ...
 	for (auto &it : m_subWidget) {
-		if (it == nullptr) {
+		if (it == null) {
 			continue;
 		}
 		it->setSize(it->getCalculateMinSize());
@@ -94,7 +94,7 @@ void ewol::widget::Sizer::onChangeSize() {
 		}
 		// -4.1- Update every subWidget size
 		for (auto &it : m_subWidget) {
-			if (it == nullptr) {
+			if (it == null) {
 				continue;
 			}
 			vec2 tmpSizeMin = it->getSize();
@@ -144,7 +144,7 @@ void ewol::widget::Sizer::onChangeSize() {
 	}
 	// -5- Update the expand in the second size if vert ==> X and if hori ==> Y
 	for (auto &it : m_subWidget) {
-		if (it == nullptr) {
+		if (it == null) {
 			continue;
 		}
 		// Now update his size  his size in X and the curent sizer size in Y:
@@ -166,7 +166,7 @@ void ewol::widget::Sizer::onChangeSize() {
 	}
 	// -6- Force size at the entire number:
 	for (auto &it : m_subWidget) {
-		if (it == nullptr) {
+		if (it == null) {
 			continue;
 		}
 		it->setSize(vec2ClipInt32(it->getSize()));
@@ -174,7 +174,7 @@ void ewol::widget::Sizer::onChangeSize() {
 	// -7- get under Size
 	vec2 underSize(0,0);
 	for (auto &it : m_subWidget) {
-		if (it == nullptr) {
+		if (it == null) {
 			continue;
 		}
 		vec2 size = it->getSize();
@@ -192,7 +192,7 @@ void ewol::widget::Sizer::onChangeSize() {
 	vec2 tmpOrigin = m_origin + tmpBorderSize + ewol::gravityGenerateDelta(propertyGravity, deltas);
 	// -9- Set sub widget origin:
 	for (auto &it : m_subWidget) {
-		if (it == nullptr) {
+		if (it == null) {
 			continue;
 		}
 		vec2 origin;
@@ -211,7 +211,7 @@ void ewol::widget::Sizer::onChangeSize() {
 	}
 	// -10- Update all subSize at every element:
 	for (auto &it : m_subWidget) {
-		if (it == nullptr) {
+		if (it == null) {
 			continue;
 		}
 		it->onChangeSize();
@@ -226,7 +226,7 @@ void ewol::widget::Sizer::calculateMinMaxSize() {
 	vec2 tmpBorderSize = propertyBorderSize->getPixel();
 	EWOL_VERBOSE("[" << getId() << "] {" << getObjectType() << "} set min size : " <<  m_minSize);
 	for (auto &it : m_subWidget) {
-		if (it == nullptr) {
+		if (it == null) {
 			continue;
 		}
 		it->calculateMinMaxSize();
diff --git a/ewol/widget/Spacer.hpp b/ewol/widget/Spacer.hpp
index 7cbffe01..9c6cbc74 100644
--- a/ewol/widget/Spacer.hpp
+++ b/ewol/widget/Spacer.hpp
@@ -38,7 +38,7 @@ namespace ewol {
 				ewol::compositing::Drawing m_draw; //!< Compositing drawing element
 			public:
 				ewol::WidgetShared getWidgetAtPos(const vec2& _pos) override {
-					return nullptr;
+					return null;
 				};
 				void onRegenerateDisplay() override;
 				void onDraw() override;
diff --git a/ewol/widget/Spin.cpp b/ewol/widget/Spin.cpp
index 1c473291..0fe62f91 100644
--- a/ewol/widget/Spin.cpp
+++ b/ewol/widget/Spin.cpp
@@ -47,7 +47,7 @@ ewol::widget::Spin::~Spin() {
 
 void ewol::widget::Spin::onChangePropertyValue() {
 	markToRedraw();
-	if (m_widgetEntry == nullptr) {
+	if (m_widgetEntry == null) {
 		EWOL_ERROR("Can not acces at entry ...");
 		return;
 	}
@@ -74,15 +74,15 @@ void ewol::widget::Spin::updateGui() {
 	EWOL_WARNING("updateGui [START]");
 	ewol::widget::SpinBase::updateGui();
 	
-	if (    m_widgetEntry != nullptr
+	if (    m_widgetEntry != null
 	     && m_connectionEntry.isConnected() == false) {
 		
 	}
-	if (    m_widgetButtonUp != nullptr
+	if (    m_widgetButtonUp != null
 	     && m_connectionButtonUp.isConnected() == false) {
 		m_connectionButtonUp = m_widgetButtonUp->signalPressed.connect(this, &ewol::widget::Spin::onCallbackUp);
 	}
-	if (    m_widgetButtonDown != nullptr
+	if (    m_widgetButtonDown != null
 	     && m_connectionButtonDown.isConnected() == false) {
 		m_connectionButtonDown = m_widgetButtonDown->signalPressed.connect(this, &ewol::widget::Spin::onCallbackDown);
 	}
diff --git a/ewol/widget/WSlider.cpp b/ewol/widget/WSlider.cpp
index 06c4fdeb..be94b993 100644
--- a/ewol/widget/WSlider.cpp
+++ b/ewol/widget/WSlider.cpp
@@ -56,7 +56,7 @@ void ewol::widget::WSlider::onChangeSize() {
 		auto it = m_subWidget.begin();
 		it+= m_windowsDestination;
 		if (    it != m_subWidget.end()
-		     && *it != nullptr) {
+		     && *it != null) {
 			(*it)->setOrigin(m_origin+m_offset);
 			(*it)->setSize(m_size);
 			(*it)->onChangeSize();
@@ -69,7 +69,7 @@ void ewol::widget::WSlider::onChangeSize() {
 		auto it = m_subWidget.begin();
 		it += m_windowsSources;
 		if (    it != m_subWidget.end()
-		     && *it != nullptr) {
+		     && *it != null) {
 		     if (*propertyTransitionMode == sladingTransitionHori) {
 				(*it)->setOrigin(   vec2(m_origin.x() + factor*(m_size.x()*m_slidingProgress),
 				                         m_origin.y())
@@ -85,7 +85,7 @@ void ewol::widget::WSlider::onChangeSize() {
 		it = m_subWidget.begin();
 		it += m_windowsDestination;
 		if (    it != m_subWidget.end()
-		     && *it != nullptr) {
+		     && *it != null) {
 			if (*propertyTransitionMode == sladingTransitionHori) {
 				(*it)->setOrigin(   vec2(m_origin.x() + factor*(m_size.x()*m_slidingProgress - m_size.x()),
 				                         m_origin.y())
@@ -120,7 +120,7 @@ void ewol::widget::WSlider::subWidgetSelectSet(int32_t _id) {
 	// search element in the list : 
 	for (auto &it : m_subWidget) {
 		elementID ++;
-		if (it != nullptr) {
+		if (it != null) {
 			if (it->getId() == _id) {
 				if (it->propertyName.get() != "") {
 					// change the internal event parameter (in case...) ==> no event generation
@@ -142,13 +142,13 @@ void ewol::widget::WSlider::subWidgetSelectSet(int32_t _id) {
 }
 
 void ewol::widget::WSlider::subWidgetSelectSet(const ewol::WidgetShared& _widgetPointer) {
-	if (_widgetPointer == nullptr) {
-		EWOL_ERROR("Can not change to a widget nullptr");
+	if (_widgetPointer == null) {
+		EWOL_ERROR("Can not change to a widget null");
 		return;
 	}
 	int32_t iii = 0;
 	for (auto &it : m_subWidget) {
-		if (    it != nullptr
+		if (    it != null
 		     && it == _widgetPointer) {
 			subWidgetSelectSetVectorId(iii);
 			if (_widgetPointer->propertyName.get() != "") {
@@ -172,7 +172,7 @@ void ewol::widget::WSlider::subWidgetSelectSet(const etk::String& _widgetName) {
 	EWOL_VERBOSE("Select a new sub-widget to dosplay : '" << _widgetName << "'");
 	int32_t iii = 0;
 	for (auto &it : m_subWidget) {
-		if (    it != nullptr
+		if (    it != null
 		     && it->propertyName.get() == _widgetName) {
 			subWidgetSelectSetVectorId(iii);
 			// change the internal event parameter (in case...) ==> no event generation
@@ -234,7 +234,7 @@ void ewol::widget::WSlider::systemDraw(const ewol::DrawProperty& _displayProp) {
 		auto it = m_subWidget.begin();
 		it += m_windowsDestination;
 		if (    it != m_subWidget.end()
-		     && *it != nullptr) {
+		     && *it != null) {
 			//EWOL_INFO("Draw : [" << propertyName << "] t=" << getObjectType() << "o=" << m_origin << "  s=" << m_size);
 			(*it)->systemDraw(prop);
 		}
@@ -244,14 +244,14 @@ void ewol::widget::WSlider::systemDraw(const ewol::DrawProperty& _displayProp) {
 		auto it = m_subWidget.begin();
 		it += m_windowsSources;
 		if (    it != m_subWidget.end()
-		     && *it != nullptr) {
+		     && *it != null) {
 			(*it)->systemDraw(prop);
 		}
 		// draw Destination : 
 		it = m_subWidget.begin();
 		it += m_windowsDestination;
 		if (    it != m_subWidget.end()
-		     && *it != nullptr) {
+		     && *it != null) {
 			(*it)->systemDraw(prop);
 		}
 	}
@@ -262,20 +262,20 @@ void ewol::widget::WSlider::onRegenerateDisplay() {
 		auto it = m_subWidget.begin();
 		it += m_windowsDestination;
 		if (    it != m_subWidget.end()
-		     && *it != nullptr) {
+		     && *it != null) {
 			(*it)->onRegenerateDisplay();
 		}
 	} else {
 		auto it = m_subWidget.begin();
 		it += m_windowsSources;
 		if (    it != m_subWidget.end()
-		     && *it != nullptr) {
+		     && *it != null) {
 			(*it)->onRegenerateDisplay();
 		}
 		it = m_subWidget.begin();
 		it += m_windowsDestination;
 		if (    it != m_subWidget.end()
-		     && *it != nullptr) {
+		     && *it != null) {
 			(*it)->onRegenerateDisplay();
 		}
 	}
@@ -295,59 +295,59 @@ void ewol::widget::WSlider::onChangePropertyTransitionMode() {
 
 ewol::WidgetShared ewol::widget::WSlider::getWidgetAtPos(const vec2& _pos) {
 	if (*propertyHide == true) {
-		return nullptr;
+		return null;
 	}
 	if (m_windowsDestination == m_windowsSources) {
 		auto it = m_subWidget.begin();
 		it += m_windowsDestination;
 		if (    it != m_subWidget.end()
-		     && *it != nullptr) {
+		     && *it != null) {
 			vec2 tmpSize = (*it)->getSize();
 			vec2 tmpOrigin = (*it)->getOrigin();
 			if(    (tmpOrigin.x() <= _pos.x() && tmpOrigin.x() + tmpSize.x() >= _pos.x())
 			    && (tmpOrigin.y() <= _pos.y() && tmpOrigin.y() + tmpSize.y() >= _pos.y()) )
 			{
 				ewol::WidgetShared tmpWidget = (*it)->getWidgetAtPos(_pos);
-				if (tmpWidget != nullptr) {
+				if (tmpWidget != null) {
 					return tmpWidget;
 				}
-				return nullptr;
+				return null;
 			}
 		}
 	} else {
 		auto it = m_subWidget.begin();
 		it += m_windowsDestination;
 		if (    it != m_subWidget.end()
-		     && *it != nullptr) {
+		     && *it != null) {
 			vec2 tmpSize = (*it)->getSize();
 			vec2 tmpOrigin = (*it)->getOrigin();
 			if(    (tmpOrigin.x() <= _pos.x() && tmpOrigin.x() + tmpSize.x() >= _pos.x())
 			    && (tmpOrigin.y() <= _pos.y() && tmpOrigin.y() + tmpSize.y() >= _pos.y()) )
 			{
 				ewol::WidgetShared tmpWidget = (*it)->getWidgetAtPos(_pos);
-				if (tmpWidget != nullptr) {
+				if (tmpWidget != null) {
 					return tmpWidget;
 				}
-				return nullptr;
+				return null;
 			}
 		}
 		it = m_subWidget.begin();
 		it += m_windowsSources;
 		if (    it != m_subWidget.end()
-		     && *it != nullptr) {
+		     && *it != null) {
 			vec2 tmpSize = (*it)->getSize();
 			vec2 tmpOrigin = (*it)->getOrigin();
 			if(    (tmpOrigin.x() <= _pos.x() && tmpOrigin.x() + tmpSize.x() >= _pos.x())
 			    && (tmpOrigin.y() <= _pos.y() && tmpOrigin.y() + tmpSize.y() >= _pos.y()) )
 			{
 				ewol::WidgetShared tmpWidget = (*it)->getWidgetAtPos(_pos);
-				if (tmpWidget != nullptr) {
+				if (tmpWidget != null) {
 					return tmpWidget;
 				}
-				return nullptr;
+				return null;
 			}
 		}
 	}
-	return nullptr;
+	return null;
 }
 
diff --git a/ewol/widget/Widget.cpp b/ewol/widget/Widget.cpp
index 98d64986..c690b545 100644
--- a/ewol/widget/Widget.cpp
+++ b/ewol/widget/Widget.cpp
@@ -527,7 +527,7 @@ bool ewol::Widget::loadXML(const exml::Element& _node) {
 
 bool ewol::Widget::systemEventEntry(ewol::event::EntrySystem& _event) {
 	ewol::WidgetShared up = ememory::dynamicPointerCast<ewol::Widget>(m_parent.lock());
-	if (up != nullptr) {
+	if (up != null) {
 		if (up->systemEventEntry(_event) == true) {
 			return true;
 		}
@@ -537,7 +537,7 @@ bool ewol::Widget::systemEventEntry(ewol::event::EntrySystem& _event) {
 
 bool ewol::Widget::systemEventInput(ewol::event::InputSystem& _event) {
 	ewol::WidgetShared up = ememory::dynamicPointerCast<ewol::Widget>(m_parent.lock());
-	if (up != nullptr) {
+	if (up != null) {
 		if (up->systemEventInput(_event) == true) {
 			return true;
 		}
diff --git a/ewol/widget/Widget.hpp b/ewol/widget/Widget.hpp
index d2b44b2b..d96f8602 100644
--- a/ewol/widget/Widget.hpp
+++ b/ewol/widget/Widget.hpp
@@ -330,7 +330,7 @@ namespace ewol {
 			/**
 			 * @brief get the widget at the specific windows absolute position
 			 * @param[in] _pos gAbsolute position of the requested widget knowledge
-			 * @return nullptr No widget found
+			 * @return null No widget found
 			 * @return pointer on the widget found
 			 * @note : INTERNAL EWOL SYSTEM
 			 */
@@ -338,7 +338,7 @@ namespace ewol {
 				if (propertyHide.get() == false) {
 					return ememory::dynamicPointerCast<ewol::Widget>(sharedFromThis());
 				}
-				return nullptr;
+				return null;
 			};
 		
 		// event section:
diff --git a/ewol/widget/Windows.cpp b/ewol/widget/Windows.cpp
index a63fb58d..985c4ec9 100644
--- a/ewol/widget/Windows.cpp
+++ b/ewol/widget/Windows.cpp
@@ -20,7 +20,7 @@ ETK_DECLARE_TYPE(ewol::widget::Windows);
 ewol::widget::Windows::Windows() :
   propertyColorConfiguration(this, "file-color", "{ewol}THEME:COLOR:Windows.json", "color file link on the theme", &ewol::widget::Windows::onChangePropertyColor),
   propertyTitle(this, "title", "No title", "Title of the windows", &ewol::widget::Windows::onChangePropertyTitle),
-  m_resourceColor(nullptr),
+  m_resourceColor(null),
   m_colorBg(-1) {
 	addObjectType("ewol::widget::Windows");
 	propertyCanFocus.setDirectCheck(true);
@@ -40,7 +40,7 @@ ewol::widget::Windows::~Windows() {
 
 void ewol::widget::Windows::onChangeSize() {
 	ewol::Widget::onChangeSize();
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		m_subWidget->calculateMinMaxSize();
 		// TODO : do it better ... and manage gravity ...
 		m_subWidget->setSize(m_size);
@@ -48,7 +48,7 @@ void ewol::widget::Windows::onChangeSize() {
 		m_subWidget->onChangeSize();
 	}
 	for (auto &it : m_popUpWidgetList) {
-		if(it != nullptr) {
+		if(it != null) {
 			it->calculateMinMaxSize();
 			it->setSize(m_size);
 			it->setOrigin(vec2(0.0f, 0.0f));
@@ -65,7 +65,7 @@ ewol::WidgetShared ewol::widget::Windows::getWidgetAtPos(const vec2& _pos) {
 	if (m_popUpWidgetList.size() != 0) {
 		return m_popUpWidgetList.back()->getWidgetAtPos(_pos);
 	// otherwise in the normal windows
-	} else if (m_subWidget != nullptr) {
+	} else if (m_subWidget != null) {
 		return m_subWidget->getWidgetAtPos(_pos);
 	}
 	// otherwise the event go to this widget ...
@@ -101,11 +101,11 @@ void ewol::widget::Windows::sysDraw() {
 }
 
 void ewol::widget::Windows::onRegenerateDisplay() {
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		m_subWidget->onRegenerateDisplay();
 	}
 	for (auto &it : m_popUpWidgetList) {
-		if (it != nullptr) {
+		if (it != null) {
 			it->onRegenerateDisplay();
 		}
 	}
@@ -120,7 +120,7 @@ void ewol::widget::Windows::systemDraw(const ewol::DrawProperty& _displayProp) {
 	#endif
 	// clear the screen with transparency ...
 	etk::Color<float> colorBg(0.5, 0.5, 0.5, 0.5);
-	if (m_resourceColor != nullptr) {
+	if (m_resourceColor != null) {
 		colorBg = m_resourceColor->get(m_colorBg);
 	}
 	gale::openGL::clearColor(colorBg);
@@ -133,7 +133,7 @@ void ewol::widget::Windows::systemDraw(const ewol::DrawProperty& _displayProp) {
 	#endif
 	//EWOL_WARNING(" WINDOWS draw on " << m_currentDrawId);
 	// first display the windows on the display
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		m_subWidget->systemDraw(_displayProp);
 		//EWOL_DEBUG("Draw Windows");
 	}
@@ -144,7 +144,7 @@ void ewol::widget::Windows::systemDraw(const ewol::DrawProperty& _displayProp) {
 	#endif
 	// second display the pop-up
 	for (auto &it : m_popUpWidgetList) {
-		if (it != nullptr) {
+		if (it != null) {
 			it->systemDraw(_displayProp);
 			//EWOL_DEBUG("Draw Pop-up");
 		}
@@ -156,12 +156,12 @@ void ewol::widget::Windows::systemDraw(const ewol::DrawProperty& _displayProp) {
 }
 
 void ewol::widget::Windows::setSubWidget(ewol::WidgetShared _widget) {
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		EWOL_INFO("Remove current main windows Widget...");
 		m_subWidget->removeParent();
 		m_subWidget.reset();
 	}
-	if (_widget != nullptr) {
+	if (_widget != null) {
 		m_subWidget = _widget;
 		m_subWidget->setParent(sharedFromThis());
 	}
@@ -171,7 +171,7 @@ void ewol::widget::Windows::setSubWidget(ewol::WidgetShared _widget) {
 }
 
 void ewol::widget::Windows::popUpWidgetPush(ewol::WidgetShared _widget) {
-	if (_widget == nullptr) {
+	if (_widget == null) {
 		// nothing to do an error appear :
 		EWOL_ERROR("can not set widget pop-up (null pointer)");
 		return;
@@ -195,7 +195,7 @@ void ewol::widget::Windows::popUpWidgetPop() {
 
 void ewol::widget::Windows::onChangePropertyColor() {
 	m_resourceColor = ewol::resource::ColorFile::create(*propertyColorConfiguration);
-	if (m_resourceColor != nullptr) {
+	if (m_resourceColor != null) {
 		m_colorBg = m_resourceColor->request("background");
 	} else {
 		EWOL_WARNING("Can not open the default color configuration file for the windows: " << *propertyColorConfiguration);
@@ -217,7 +217,7 @@ void ewol::widget::Windows::requestDestroyFromChild(const ewol::ObjectShared& _c
 	while (it != m_popUpWidgetList.end()) {
 		if (*it == _child) {
 			EWOL_VERBOSE("    Find it ...");
-			if (*it == nullptr) {
+			if (*it == null) {
 				m_popUpWidgetList.erase(it);
 				it = m_popUpWidgetList.begin();
 				continue;
@@ -233,7 +233,7 @@ void ewol::widget::Windows::requestDestroyFromChild(const ewol::ObjectShared& _c
 	}
 	if (m_subWidget == _child) {
 		EWOL_VERBOSE("    Find it ... 2");
-		if (m_subWidget == nullptr) {
+		if (m_subWidget == null) {
 			return;
 		}
 		m_subWidget->removeParent();
@@ -244,37 +244,37 @@ void ewol::widget::Windows::requestDestroyFromChild(const ewol::ObjectShared& _c
 
 ewol::ObjectShared ewol::widget::Windows::getSubObjectNamed(const etk::String& _objectName) {
 	ewol::ObjectShared tmpObject = ewol::Widget::getSubObjectNamed(_objectName);
-	if (tmpObject != nullptr) {
+	if (tmpObject != null) {
 		return tmpObject;
 	}
 	// check direct subwidget
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		tmpObject = m_subWidget->getSubObjectNamed(_objectName);
-		if (tmpObject != nullptr) {
+		if (tmpObject != null) {
 			return tmpObject;
 		}
 	}
 	// get all subwidget "pop-up"
 	for (auto &it : m_popUpWidgetList) {
-		if (it != nullptr) {
+		if (it != null) {
 			tmpObject = it->getSubObjectNamed(_objectName);
-			if (tmpObject != nullptr) {
+			if (tmpObject != null) {
 				return tmpObject;
 			}
 		}
 	}
 	// not find ...
-	return nullptr;
+	return null;
 }
 
 void ewol::widget::Windows::drawWidgetTree(int32_t _level) {
 	ewol::Widget::drawWidgetTree(_level);
 	_level++;
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		m_subWidget->drawWidgetTree(_level);
 	}
 	for (auto &it: m_popUpWidgetList) {
-		if (it != nullptr) {
+		if (it != null) {
 			it->drawWidgetTree(_level);
 		}
 	}
diff --git a/ewol/widget/meta/ColorChooser.cpp b/ewol/widget/meta/ColorChooser.cpp
index 6a952248..ef13956b 100644
--- a/ewol/widget/meta/ColorChooser.cpp
+++ b/ewol/widget/meta/ColorChooser.cpp
@@ -83,26 +83,26 @@ ewol::widget::ColorChooser::~ColorChooser() {
 
 
 void ewol::widget::ColorChooser::onChangePropertyValue() {
-	if (m_widgetRed != nullptr) {
+	if (m_widgetRed != null) {
 		m_widgetRed->propertyValue.set(propertyValue->r());
 	}
-	if (m_widgetGreen != nullptr) {
+	if (m_widgetGreen != null) {
 		m_widgetGreen->propertyValue.set(propertyValue->g());
 	}
-	if (m_widgetBlue != nullptr) {
+	if (m_widgetBlue != null) {
 		m_widgetBlue->propertyValue.set(propertyValue->b());
 	}
-	if (m_widgetAlpha != nullptr) {
+	if (m_widgetAlpha != null) {
 		m_widgetAlpha->propertyValue.set(propertyValue->a());
 	}
-	if (m_widgetColorBar != nullptr) {
+	if (m_widgetColorBar != null) {
 		m_widgetColorBar->propertyValue.set(propertyValue);
 	}
 }
 
 void ewol::widget::ColorChooser::onCallbackColorChangeRed(const float& _newColor) {
 	propertyValue.getDirect().setR(_newColor);
-	if (m_widgetColorBar != nullptr) {
+	if (m_widgetColorBar != null) {
 		m_widgetColorBar->propertyValue.set(propertyValue);
 	}
 	signalChange.emit(propertyValue);
@@ -110,7 +110,7 @@ void ewol::widget::ColorChooser::onCallbackColorChangeRed(const float& _newColor
 
 void ewol::widget::ColorChooser::onCallbackColorChangeGreen(const float& _newColor) {
 	propertyValue.getDirect().setG(_newColor);
-	if (m_widgetColorBar != nullptr) {
+	if (m_widgetColorBar != null) {
 		m_widgetColorBar->propertyValue.set(propertyValue);
 	}
 	signalChange.emit(propertyValue);
@@ -118,7 +118,7 @@ void ewol::widget::ColorChooser::onCallbackColorChangeGreen(const float& _newCol
 
 void ewol::widget::ColorChooser::onCallbackColorChangeBlue(const float& _newColor) {
 	propertyValue.getDirect().setB(_newColor);
-	if (m_widgetColorBar != nullptr) {
+	if (m_widgetColorBar != null) {
 		m_widgetColorBar->propertyValue.set(propertyValue);
 	}
 	signalChange.emit(propertyValue);
@@ -126,7 +126,7 @@ void ewol::widget::ColorChooser::onCallbackColorChangeBlue(const float& _newColo
 
 void ewol::widget::ColorChooser::onCallbackColorChangeAlpha(const float& _newColor) {
 	propertyValue.getDirect().setA(_newColor);
-	if (m_widgetColorBar != nullptr) {
+	if (m_widgetColorBar != null) {
 		m_widgetColorBar->propertyValue.set(propertyValue);
 	}
 	signalChange.emit(propertyValue);
@@ -137,16 +137,16 @@ void ewol::widget::ColorChooser::onCallbackColorChange(const etk::Color<>& _newC
 	uint8_t tmpAlpha = propertyValue->a();
 	propertyValue.getDirect() = _newColor;
 	propertyValue.getDirect().setA(tmpAlpha);
-	if (m_widgetRed != nullptr) {
+	if (m_widgetRed != null) {
 		m_widgetRed->propertyValue.set(propertyValue->r());
 	}
-	if (m_widgetGreen != nullptr) {
+	if (m_widgetGreen != null) {
 		m_widgetGreen->propertyValue.set(propertyValue->g());
 	}
-	if (m_widgetBlue != nullptr) {
+	if (m_widgetBlue != null) {
 		m_widgetBlue->propertyValue.set(propertyValue->b());
 	}
-	if (m_widgetAlpha != nullptr) {
+	if (m_widgetAlpha != null) {
 		m_widgetAlpha->propertyValue.set(propertyValue->a());
 	}
 	signalChange.emit(propertyValue);
diff --git a/ewol/widget/meta/FileChooser.hpp b/ewol/widget/meta/FileChooser.hpp
index 9d485ebc..5e7d4b57 100644
--- a/ewol/widget/meta/FileChooser.hpp
+++ b/ewol/widget/meta/FileChooser.hpp
@@ -28,7 +28,7 @@ namespace ewol {
 		 *  The first step is to create the file chooser pop-up : (never in the constructor!!!)
 		 *  [code style=c++]
 		 *  ewol::widget::FileChooserShared tmpWidget = ewol::widget::FileChooser::create();
-		 *  if (tmpWidget == nullptr) {
+		 *  if (tmpWidget == null) {
 		 *  	APPL_ERROR("Can not open File chooser !!! ");
 		 *  	return -1;
 		 *  }
@@ -44,7 +44,7 @@ namespace ewol {
 		 *  //tmpWidget->propertyPath.set("/home/me");
 		 *  // add the widget as windows pop-up ...
 		 *  ewol::widget::WindowsShared tmpWindows = getWindows();
-		 *  if (tmpWindows == nullptr) {
+		 *  if (tmpWindows == null) {
 		 *  	APPL_ERROR("Can not get the current windows !!! ");
 		 *  	return -1;
 		 *  }
diff --git a/ewol/widget/meta/Parameter.cpp b/ewol/widget/meta/Parameter.cpp
index 7e31a18e..b792d588 100644
--- a/ewol/widget/meta/Parameter.cpp
+++ b/ewol/widget/meta/Parameter.cpp
@@ -33,9 +33,9 @@ ewol::widget::Parameter::Parameter() :
 void ewol::widget::Parameter::init() {
 	ewol::widget::PopUp::init();
 	
-	ewol::widget::SizerShared mySizerVert = nullptr;
-	ewol::widget::SizerShared mySizerHori = nullptr;
-	ewol::widget::SpacerShared mySpacer = nullptr;
+	ewol::widget::SizerShared mySizerVert = null;
+	ewol::widget::SizerShared mySizerHori = null;
+	ewol::widget::SpacerShared mySpacer = null;
 	#ifdef __TARGET_OS__Android
 		propertyMinSize.set(gale::Dimension(vec2(90, 90), gale::distance::pourcent));
 	#else
@@ -43,7 +43,7 @@ void ewol::widget::Parameter::init() {
 	#endif
 	
 	mySizerVert = ewol::widget::Sizer::create();
-	if (mySizerVert == nullptr) {
+	if (mySizerVert == null) {
 		EWOL_ERROR("Can not allocate widget  == > display might be in error");
 	} else {
 		EWOL_INFO("add widget");
@@ -54,14 +54,14 @@ void ewol::widget::Parameter::init() {
 		setSubWidget(mySizerVert);
 		
 		mySizerHori = ewol::widget::Sizer::create();
-		if (mySizerHori == nullptr) {
+		if (mySizerHori == null) {
 			EWOL_ERROR("Can not allocate widget  == > display might be in error");
 		} else {
 			mySizerHori->propertyMode.set(widget::Sizer::modeHori);
 			mySizerVert->subWidgetAdd(mySizerHori);
 			
 			mySpacer = ewol::widget::Spacer::create();
-			if (mySpacer == nullptr) {
+			if (mySpacer == null) {
 				EWOL_ERROR("Can not allocate widget  == > display might be in error");
 			} else {
 				mySpacer->propertyExpand.set(bvec2(true,false));
@@ -69,7 +69,7 @@ void ewol::widget::Parameter::init() {
 			}
 			
 			ewol::widget::ButtonShared tmpButton = widget::Button::create();
-			if (tmpButton == nullptr) {
+			if (tmpButton == null) {
 				EWOL_ERROR("Can not allocate widget  == > display might be in error");
 			} else {
 				tmpButton->setSubWidget(ewol::widget::composerGenerateString(
@@ -82,7 +82,7 @@ void ewol::widget::Parameter::init() {
 			}
 			
 			mySpacer = ewol::widget::Spacer::create();
-			if (mySpacer == nullptr) {
+			if (mySpacer == null) {
 				EWOL_ERROR("Can not allocate widget  == > display might be in error");
 			} else {
 				mySpacer->propertyExpand.set(bvec2(false,false));
@@ -91,7 +91,7 @@ void ewol::widget::Parameter::init() {
 			}
 			
 			tmpButton = ewol::widget::Button::create();
-			if (tmpButton == nullptr) {
+			if (tmpButton == null) {
 				EWOL_ERROR("Can not allocate widget  == > display might be in error");
 			} else {
 				tmpButton->setSubWidget(ewol::widget::composerGenerateString(
@@ -105,14 +105,14 @@ void ewol::widget::Parameter::init() {
 		}
 		
 		mySizerHori = ewol::widget::Sizer::create();
-		if (mySizerHori == nullptr) {
+		if (mySizerHori == null) {
 			EWOL_ERROR("Can not allocate widget  == > display might be in error");
 		} else {
 			mySizerHori->propertyMode.set(widget::Sizer::modeHori);
 			mySizerVert->subWidgetAdd(mySizerHori);
 			
 			m_paramList = ewol::widget::ParameterList::create();
-			if (m_paramList == nullptr) {
+			if (m_paramList == null) {
 				EWOL_ERROR("Can not allocate widget  == > display might be in error");
 			} else {
 			
@@ -122,7 +122,7 @@ void ewol::widget::Parameter::init() {
 				mySizerHori->subWidgetAdd(m_paramList);
 			}
 			mySpacer = ewol::widget::Spacer::create();
-			if (mySpacer == nullptr) {
+			if (mySpacer == null) {
 				EWOL_ERROR("Can not allocate widget  == > display might be in error");
 			} else {
 				mySpacer->propertyFill.set(bvec2(false,true));
@@ -132,14 +132,14 @@ void ewol::widget::Parameter::init() {
 			}
 			
 			ewol::widget::SizerShared mySizerVert2 = widget::Sizer::create();
-			if (mySizerVert2 == nullptr) {
+			if (mySizerVert2 == null) {
 				EWOL_ERROR("Can not allocate widget  == > display might be in error");
 			} else {
 				mySizerVert2->propertyMode.set(widget::Sizer::modeVert);
 				mySizerHori->subWidgetAdd(mySizerVert2);
 				
 				mySpacer = ewol::widget::Spacer::create();
-				if (mySpacer == nullptr) {
+				if (mySpacer == null) {
 					EWOL_ERROR("Can not allocate widget  == > display might be in error");
 				} else {
 					mySpacer->propertyExpand.set(bvec2(true,false));
@@ -149,7 +149,7 @@ void ewol::widget::Parameter::init() {
 				}
 				
 				m_wSlider = ewol::widget::WSlider::create();
-				if (m_wSlider == nullptr) {
+				if (m_wSlider == null) {
 					EWOL_ERROR("Can not allocate widget  == > display might be in error");
 				} else {
 					m_wSlider->propertyTransitionSpeed.set(0.5);
@@ -161,7 +161,7 @@ void ewol::widget::Parameter::init() {
 		}
 		
 		mySpacer = ewol::widget::Spacer::create();
-		if (mySpacer == nullptr) {
+		if (mySpacer == null) {
 			EWOL_ERROR("Can not allocate widget  == > display might be in error");
 		} else {
 			mySpacer->propertyExpand.set(bvec2(true,false));
@@ -171,7 +171,7 @@ void ewol::widget::Parameter::init() {
 		}
 		
 		m_widgetTitle = ewol::widget::Label::create();
-		if (m_widgetTitle == nullptr) {
+		if (m_widgetTitle == null) {
 			EWOL_ERROR("Can not allocate widget  == > display might be in error");
 		} else {
 			m_widgetTitle->propertyValue.set(propertyLabelTitle);
@@ -187,7 +187,7 @@ ewol::widget::Parameter::~Parameter() {
 }
 
 void ewol::widget::Parameter::onChangePropertyLabelTitle() {
-	if (m_widgetTitle != nullptr) {
+	if (m_widgetTitle != null) {
 		m_widgetTitle->propertyValue.set(propertyLabelTitle);
 	}
 }
@@ -203,22 +203,22 @@ void ewol::widget::Parameter::onCallbackParameterSave() {
 	EWOL_TODO("Save Parameter !!! ");
 }
 void ewol::widget::Parameter::onCallbackMenuSelected(const int32_t& _value) {
-	if (m_wSlider != nullptr) {
+	if (m_wSlider != null) {
 		EWOL_DEBUG("event on the parameter : Menu-select select ID=" << _value << "");
 		m_wSlider->subWidgetSelectSet(_value);
 	}
 }
 
 void ewol::widget::Parameter::menuAdd(etk::String _label, etk::String _image, ewol::WidgetShared _associateWidget) {
-	if (m_paramList != nullptr) {
+	if (m_paramList != null) {
 		m_paramList->menuAdd(_label, m_currentIdList, _image);
-		if (m_wSlider != nullptr) {
-			if (_associateWidget != nullptr) {
+		if (m_wSlider != null) {
+			if (_associateWidget != null) {
 				m_wSlider->subWidgetAdd(_associateWidget);
 			} else { 
 				EWOL_DEBUG("Associate an empty widget on it ...");
 				ewol::widget::LabelShared myLabel = widget::Label::create();
-				if (myLabel == nullptr) {
+				if (myLabel == null) {
 					EWOL_ERROR("Can not allocate widget  == > display might be in error");
 				} else {
 					myLabel->propertyValue.set(etk::String("No widget for : ") + _label);
@@ -234,21 +234,21 @@ void ewol::widget::Parameter::menuAdd(etk::String _label, etk::String _image, ew
 	}
 }
 void ewol::widget::Parameter::menuAddGroup(etk::String _label) {
-	if (m_paramList != nullptr) {
+	if (m_paramList != null) {
 		m_paramList->menuSeparator();
 		m_paramList->menuAddGroup(_label);
 	}
 }
 
 void ewol::widget::Parameter::menuClear() {
-	if (m_paramList != nullptr) {
+	if (m_paramList != null) {
 		m_paramList->menuClear();
 		m_currentIdList = 0;
 	}
 }
 
 void ewol::widget::Parameter::menuSeparator() {
-	if (m_paramList != nullptr) {
+	if (m_paramList != null) {
 		m_paramList->menuSeparator();
 	}
 }
diff --git a/ewol/widget/meta/ParameterList.cpp b/ewol/widget/meta/ParameterList.cpp
index 5c9c1897..58667bb0 100644
--- a/ewol/widget/meta/ParameterList.cpp
+++ b/ewol/widget/meta/ParameterList.cpp
@@ -51,7 +51,7 @@ void ewol::widget::ParameterList::calculateMinMaxSize() {
 }
 
 void ewol::widget::ParameterList::addOObject(const ememory::SharedPtr<ewol::Compositing>& _newObject, int32_t _pos) {
-	if (_newObject == nullptr) {
+	if (_newObject == null) {
 		EWOL_ERROR("Try to add an empty object in the Widget generic display system");
 		return;
 	}
@@ -68,7 +68,7 @@ void ewol::widget::ParameterList::clearOObjectList() {
 
 void ewol::widget::ParameterList::onDraw() {
 	for (auto &it : m_listOObject) {
-		if (it != nullptr) {
+		if (it != null) {
 			it->draw();
 		}
 	}
@@ -112,7 +112,7 @@ void ewol::widget::ParameterList::onRegenerateDisplay() {
 		
 		// set background color :
 		ememory::SharedPtr<ewol::compositing::Drawing> tmpDraw = ememory::makeShared<ewol::compositing::Drawing>();
-		if (tmpDraw == nullptr) {
+		if (tmpDraw == null) {
 			return;
 		}
 		tmpDraw->setColor(etk::Color<>(0xFF, 0xFF, 0xFF, 0xFF));
@@ -135,7 +135,7 @@ void ewol::widget::ParameterList::onRegenerateDisplay() {
 		for (int32_t iii=startRaw; iii<nbRaw && iii<(int32_t)(startRaw+displayableRaw); iii++) {
 			etk::String myTextToWrite = "???";
 			etk::Color<> fg(0x00, 0x00, 0x00, 0xFF);
-			if (m_list[iii] != nullptr) {
+			if (m_list[iii] != null) {
 				myTextToWrite = TRANSLATE(m_list[iii]->m_label);
 			}
 			
@@ -181,7 +181,7 @@ bool ewol::widget::ParameterList::onEventInput(const ewol::event::Input& _event)
 		int32_t rawID = (relativePos.y()+m_originScrooled.y()) / (minHeight + 2*m_paddingSizeY);
 		// generate an event on a rawId if the element request change and Select it ...
 		if (rawID >= 0 && (size_t)rawID < m_list.size()) {
-			if (m_list[rawID]!=nullptr) {
+			if (m_list[rawID]!=null) {
 				if (m_list[rawID]->m_refId >= 0) {
 					signalSelect.emit(m_list[rawID]->m_refId);
 					m_idSelected = rawID;
@@ -204,7 +204,7 @@ void ewol::widget::ParameterList::onLostFocus() {
 
 void ewol::widget::ParameterList::menuAdd(etk::String& _label, int32_t _refId, etk::String& _image) {
 	ememory::SharedPtr<ewol::widget::elementPL> tmpEmement = ememory::makeShared<widget::elementPL>(_label, _refId, _image, false);
-	if (tmpEmement == nullptr) {
+	if (tmpEmement == null) {
 		EWOL_ERROR("Can not allocacte menu parameter");
 		return;
 	}
@@ -218,7 +218,7 @@ void ewol::widget::ParameterList::menuAdd(etk::String& _label, int32_t _refId, e
 void ewol::widget::ParameterList::menuAddGroup(etk::String& _label) {
 	etk::String image = "";
 	ememory::SharedPtr<ewol::widget::elementPL> tmpEmement = ememory::makeShared<widget::elementPL>(_label, -1, image, true);
-	if (tmpEmement == nullptr) {
+	if (tmpEmement == null) {
 		EWOL_ERROR("Can not allocacte menu parameter");
 		return;
 	}
diff --git a/ewol/widget/meta/SpinBase.cpp b/ewol/widget/meta/SpinBase.cpp
index b866b7a4..c7681101 100644
--- a/ewol/widget/meta/SpinBase.cpp
+++ b/ewol/widget/meta/SpinBase.cpp
@@ -55,7 +55,7 @@ void ewol::widget::SpinBase::onChangePropertySpinMode() {
 
 void ewol::widget::SpinBase::onChangePropertyShape() {
 	m_config = ewol::resource::ConfigFile::create(propertyShape);
-	if (m_config != nullptr) {
+	if (m_config != null) {
 		m_confIdEntryShaper = m_config->request("entry-shaper");
 		m_confIdUpShaper = m_config->request("up-shaper");
 		m_confIdDownShaper = m_config->request("down-shaper");
@@ -71,26 +71,26 @@ void ewol::widget::SpinBase::updateGui() {
 	subWidgetRemoveAll();
 	markToRedraw();
 	requestUpdateSize();
-	if (m_widgetEntry == nullptr) {
+	if (m_widgetEntry == null) {
 		etk::String shaper;
-		if (m_config != nullptr) {
+		if (m_config != null) {
 			shaper = m_config->getString(m_confIdEntryShaper);
 			EWOL_VERBOSE("shaper entry : " << shaper);
 		}
 		m_widgetEntry = ewol::widget::Entry::create("shape", shaper);
-		if (m_widgetEntry != nullptr) {
+		if (m_widgetEntry != null) {
 			m_widgetEntry->propertyExpand.set(bvec2(true,false));
 			m_widgetEntry->propertyFill.set(bvec2(true,true));
 		}
 	}
-	if (m_widgetButtonDown == nullptr) {
+	if (m_widgetButtonDown == null) {
 		etk::String shaper;
-		if (m_config != nullptr) {
+		if (m_config != null) {
 			shaper = m_config->getString(m_confIdDownShaper);
 			EWOL_VERBOSE("shaper button DOWN : " << shaper);
 		}
 		m_widgetButtonDown = ewol::widget::Button::create("shape", shaper);
-		if (m_widgetButtonDown != nullptr) {
+		if (m_widgetButtonDown != null) {
 			m_widgetButtonDown->propertyExpand.set(bvec2(false,false));
 			m_widgetButtonDown->propertyFill.set(bvec2(true,true));
 			etk::String data = m_config->getString(m_confIdDownData);
@@ -98,14 +98,14 @@ void ewol::widget::SpinBase::updateGui() {
 			m_widgetButtonDown->setSubWidget(widget);
 		}
 	}
-	if (m_widgetButtonUp == nullptr) {
+	if (m_widgetButtonUp == null) {
 		etk::String shaper;
-		if (m_config != nullptr) {
+		if (m_config != null) {
 			shaper = m_config->getString(m_confIdUpShaper);
 			EWOL_VERBOSE("shaper button UP : " << shaper);
 		}
 		m_widgetButtonUp = ewol::widget::Button::create("shape", shaper);
-		if (m_widgetButtonUp != nullptr) {
+		if (m_widgetButtonUp != null) {
 			m_widgetButtonUp->propertyExpand.set(bvec2(false,false));
 			m_widgetButtonUp->propertyFill.set(bvec2(true,true));
 			etk::String data = m_config->getString(m_confIdUpData);
diff --git a/ewol/widget/meta/StdPopUp.cpp b/ewol/widget/meta/StdPopUp.cpp
index 4c1ea7f3..c41fa390 100644
--- a/ewol/widget/meta/StdPopUp.cpp
+++ b/ewol/widget/meta/StdPopUp.cpp
@@ -23,9 +23,9 @@ ewol::widget::StdPopUp::StdPopUp() :
                         "No Label",
                         "Comment of the pop-up",
                         &ewol::widget::StdPopUp::onChangePropertyComment),
-  m_title(nullptr),
-  m_comment(nullptr),
-  m_subBar(nullptr) {
+  m_title(null),
+  m_comment(null),
+  m_subBar(null) {
 	addObjectType("ewol::widget::StdPopUp");
 }
 
@@ -87,7 +87,7 @@ ewol::widget::StdPopUp::~StdPopUp() {
 }
 
 void ewol::widget::StdPopUp::onChangePropertyTitle() {
-	if (m_title == nullptr) {
+	if (m_title == null) {
 		return;
 	}
 	m_title->propertyValue.set(*propertyTitle);
@@ -95,7 +95,7 @@ void ewol::widget::StdPopUp::onChangePropertyTitle() {
 }
 
 void ewol::widget::StdPopUp::onChangePropertyComment() {
-	if (m_comment == nullptr) {
+	if (m_comment == null) {
 		return;
 	}
 	m_comment->propertyValue.set(*propertyComment);
@@ -103,19 +103,19 @@ void ewol::widget::StdPopUp::onChangePropertyComment() {
 }
 
 ewol::widget::ButtonShared ewol::widget::StdPopUp::addButton(const etk::String& _text, bool _autoExit) {
-	if (m_subBar == nullptr) {
+	if (m_subBar == null) {
 		EWOL_ERROR("button-bar does not existed ...");
-		return nullptr;
+		return null;
 	}
 	ewol::widget::ButtonShared myButton = widget::Button::create();
-	if (myButton == nullptr) {
+	if (myButton == null) {
 		EWOL_ERROR("Can not allocate new button ...");
-		return nullptr;
+		return null;
 	}
 	ewol::widget::LabelShared myLabel = ewol::widget::Label::create();
-	if (myLabel == nullptr) {
+	if (myLabel == null) {
 		EWOL_ERROR("Can not allocate new label ...");
-		return nullptr;
+		return null;
 	}
 	myLabel->propertyValue.set(_text);
 	myButton->setSubWidget(myLabel);
diff --git a/sample/CustomWidgets/appl/Windows.cpp b/sample/CustomWidgets/appl/Windows.cpp
index 49a46261..95b81fa4 100644
--- a/sample/CustomWidgets/appl/Windows.cpp
+++ b/sample/CustomWidgets/appl/Windows.cpp
@@ -13,7 +13,7 @@
 #include <etk/tool.hpp>
 
 appl::Windows::Windows() :
-  m_composer(nullptr) {
+  m_composer(null) {
 	addObjectType("appl::Windows");
 	propertyTitle.setDirectCheck(etk::String("sample ") + PROJECT_NAME);
 }
@@ -38,7 +38,7 @@ void appl::Windows::init() {
 	composition += "</sizer>\n";
 	
 	m_composer = ewol::widget::Composer::create();
-	if (m_composer == nullptr) {
+	if (m_composer == null) {
 		APPL_CRITICAL(" An error occured ... in the windows creatrion ...");
 		return;
 	}
@@ -54,14 +54,14 @@ void appl::Windows::onCallbackChangeValues() {
 		tmp.pushBack(etk::tool::frand(-1.0, 1.0));
 	}
 	ememory::SharedPtr<appl::widget::VectorDisplay> tmpDisp = ememory::dynamicPointerCast<appl::widget::VectorDisplay>(getSubObjectNamed("displayer"));
-	if (tmpDisp != nullptr) {
+	if (tmpDisp != null) {
 		tmpDisp->setValue(tmp);
 	}
 }
 
 void appl::Windows::onCallbackAutoMode() {
 	ememory::SharedPtr<appl::widget::VectorDisplay> tmpDisp = ememory::dynamicPointerCast<appl::widget::VectorDisplay>(getSubObjectNamed("displayer"));
-	if (tmpDisp != nullptr) {
+	if (tmpDisp != null) {
 		tmpDisp->ToggleAuto();
 	}
 }
diff --git a/sample/HelloWord/appl/Windows.cpp b/sample/HelloWord/appl/Windows.cpp
index 4bf2b80f..780a8e2b 100644
--- a/sample/HelloWord/appl/Windows.cpp
+++ b/sample/HelloWord/appl/Windows.cpp
@@ -22,7 +22,7 @@ void appl::Windows::init() {
 	//! [ewol_sample_HW_windows_init]
 	//! [ewol_sample_HW_windows_label]
 	ewol::widget::LabelShared tmpWidget = ewol::widget::Label::create();
-	if (tmpWidget == nullptr) {
+	if (tmpWidget == null) {
 		APPL_ERROR("Can not allocate widget ==> display might be in error");
 	} else {
 		tmpWidget->propertyValue.set("Hello <font color='blue'>World</font>");
diff --git a/sample/wallpaper/appl/Windows.cpp b/sample/wallpaper/appl/Windows.cpp
index fc1c874e..5b5b32e2 100644
--- a/sample/wallpaper/appl/Windows.cpp
+++ b/sample/wallpaper/appl/Windows.cpp
@@ -17,7 +17,7 @@ appl::Windows::Windows() {
 void appl::Windows::init() {
 	ewol::widget::Windows::init();
 	appl::WidgetDisplayShared tmpWidget = appl::WidgetDisplay::create();
-	if (tmpWidget == nullptr) {
+	if (tmpWidget == null) {
 		APPL_ERROR("Can not allocate widget ==> display might be in error");
 	} else {
 		setSubWidget(tmpWidget);
diff --git a/test/testApplication.cpp b/test/testApplication.cpp
index 95305751..edb3243b 100644
--- a/test/testApplication.cpp
+++ b/test/testApplication.cpp
@@ -11,7 +11,7 @@
 
 TEST(TestEwolApplication, Creation) {
 	ewol::context::Application* tmpAppl = ETK_NEW(ewol::context::Application);
-	EXPECT_NE(tmpAppl, nullptr);
+	EXPECT_NE(tmpAppl, null);
 	ETK_DELETE(ewol::context::Application, tmpAppl);
 }
 
diff --git a/test/testWindows.cpp b/test/testWindows.cpp
index 8d49ab50..f4c4c6d0 100644
--- a/test/testWindows.cpp
+++ b/test/testWindows.cpp
@@ -28,7 +28,7 @@ namespace appl {
 TEST(TestEwolWindows, Creation) {
 	/*
 	ememory::SharedPtr<appl::Windows> tmpWindows = appl::Windows::create();
-	EXPECT_NE(tmpWindows, nullptr);
+	EXPECT_NE(tmpWindows, null);
 	tmpWindows.reset();
 	*/
 }
diff --git a/tools/platform_test/appl/MainWindows.hpp b/tools/platform_test/appl/MainWindows.hpp
index d72598ce..91fb77b3 100644
--- a/tools/platform_test/appl/MainWindows.hpp
+++ b/tools/platform_test/appl/MainWindows.hpp
@@ -40,7 +40,7 @@ namespace appl {
 			void forceFocusCall(const ewol::event::Time& _event);
 			virtual ewol::WidgetShared getWidgetAtPos(const vec2& _pos) override {
 				ewol::WidgetShared wid = ewol::widget::Windows::getWidgetAtPos(_pos);
-				if (wid != nullptr) {
+				if (wid != null) {
 					return wid;
 				}
 				return ememory::dynamicPointerCast<ewol::Widget>(sharedFromThis());
diff --git a/tools/platform_test/appl/init.cpp b/tools/platform_test/appl/init.cpp
index e19966a5..84ae5a2d 100644
--- a/tools/platform_test/appl/init.cpp
+++ b/tools/platform_test/appl/init.cpp
@@ -56,13 +56,13 @@ namespace appl {
 				APPL_INFO("==> START ... (BEGIN)");
 				
 				ememory::SharedPtr<appl::MainWindows> basicWindows = appl::MainWindows::create();
-				if (basicWindows == nullptr) {
+				if (basicWindows == null) {
 					APPL_ERROR("Can not allocate the basic windows");
 					return;
 				}
 				// create the specific windows
 				_context.setWindows(basicWindows);
-				if (basicWindows == nullptr) {
+				if (basicWindows == null) {
 					APPL_ERROR("Can not allocate the basic windows");
 					_context.exit(-1);
 					return;
diff --git a/tools/platform_test/appl/widget/SizerColor.cpp b/tools/platform_test/appl/widget/SizerColor.cpp
index 19fd021c..1e7a7ae1 100644
--- a/tools/platform_test/appl/widget/SizerColor.cpp
+++ b/tools/platform_test/appl/widget/SizerColor.cpp
@@ -46,7 +46,7 @@ void appl::widget::SizerColor::onRegenerateDisplay() {
 	vec2 underSize(0,0);
 	vec2 underOrigin(999999999999.0,999999999999.0);
 	for (auto &it : m_subWidget) {
-		if (it == nullptr) {
+		if (it == null) {
 			continue;
 		}
 		vec2 size = it->getSize();
@@ -63,7 +63,7 @@ void appl::widget::SizerColor::onRegenerateDisplay() {
 	vec2 localWidgetSize = m_size - tmpBorderSize*2.0f;
 	vec2 localWidgetOrigin = m_origin + tmpBorderSize;
 	for (auto &it : m_subWidget) {
-		if (it == nullptr) {
+		if (it == null) {
 			continue;
 		}
 		vec2 origin = it->getOrigin();
diff --git a/tools/visual_test/appl/MainWindows.cpp b/tools/visual_test/appl/MainWindows.cpp
index 0a42a33b..7309bac1 100644
--- a/tools/visual_test/appl/MainWindows.cpp
+++ b/tools/visual_test/appl/MainWindows.cpp
@@ -51,15 +51,15 @@ void appl::MainWindows::init() {
 	externSubBind(m_composer, ewol::widget::Button, "appl-next-gravity", signalPressed, sharedFromThis(), &appl::MainWindows::onCallbackGravityChange);
 	
 	m_sizerVert = ememory::dynamicPointerCast<ewol::widget::Sizer>(m_composer->getSubObjectNamed("appl-upper-test-widget"));
-	if (m_sizerVert == nullptr) {
+	if (m_sizerVert == null) {
 		APPL_CRITICAL("Can not get vertical pointer");
 	}
 	m_sizerDynamic = ememory::dynamicPointerCast<ewol::widget::Sizer>(m_composer->getSubObjectNamed("appl-dynamic-config"));
-	if (m_sizerDynamic == nullptr) {
+	if (m_sizerDynamic == null) {
 		APPL_CRITICAL("Can not get dynamic pointer");
 	}
 	m_subWidget = ememory::dynamicPointerCast<ewol::Widget>(m_composer->getSubObjectNamed("[TEST]TO-TEST"));
-	if (m_subWidget == nullptr) {
+	if (m_subWidget == null) {
 		APPL_CRITICAL("Can not get subWidget pointer");
 	}
 	shortCutAdd("F12",          "menu:reloade-shader");
@@ -182,7 +182,7 @@ void appl::MainWindows::onCallbackWidgetChange(int32_t _increment) {
 			break;
 		case 1:
 			m_subWidget = TestDistanceField::create();
-			if (m_subWidget != nullptr) {
+			if (m_subWidget != null) {
 				m_sizerVert->subWidgetAdd(m_subWidget);
 			}
 			tmpDescription = "Test Distance Field";
@@ -191,7 +191,7 @@ void appl::MainWindows::onCallbackWidgetChange(int32_t _increment) {
 	}
 	// create the widget with a xml generator (readable for test ...):
 	m_subWidget = ewol::widget::composerGenerateString(tmpConstruct);
-	if (m_subWidget != nullptr) {
+	if (m_subWidget != null) {
 		m_sizerVert->subWidgetReplace(oldWidget, m_subWidget);
 	}
 	propertySetOnWidgetNamed("appl-label-test", "value", tmpDescription);
@@ -200,7 +200,7 @@ void appl::MainWindows::onCallbackWidgetChange(int32_t _increment) {
 
 static void addSpacer(ememory::SharedPtr<ewol::widget::Sizer> _sizer, etk::Color<> _color=etk::color::none) {
 	ememory::SharedPtr<ewol::widget::Spacer> mySpacer = ewol::widget::Spacer::create();
-	if (mySpacer != nullptr) {
+	if (mySpacer != null) {
 		mySpacer->propertyExpand.set(bvec2(true,false));
 		mySpacer->propertyFill.set(bvec2(true,false));
 		if (_color == etk::color::none) {
@@ -214,7 +214,7 @@ static void addSpacer(ememory::SharedPtr<ewol::widget::Sizer> _sizer, etk::Color
 void appl::MainWindows::updateProperty() {
 	// remove all elements:
 	m_sizerDynamic->subWidgetRemoveAll();
-	if (m_subWidget == nullptr) {
+	if (m_subWidget == null) {
 		return;
 	}
 	m_listConnection.clear();
@@ -224,12 +224,12 @@ void appl::MainWindows::updateProperty() {
 	addSpacer(m_sizerDynamic, etk::color::red);
 	for (size_t iii=0; iii<m_subWidget->properties.size(); ++iii) {
 		eproperty::Property* param = m_subWidget->properties.getRaw(iii);
-		if (param == nullptr) {
-			APPL_WARNING("Parameter EMPTY . " << iii << " : nullptr");
+		if (param == null) {
+			APPL_WARNING("Parameter EMPTY . " << iii << " : null");
 			continue;
 		}
 		ememory::SharedPtr<ewol::widget::Sizer> widgetSizer = ewol::widget::Sizer::create();
-		if (widgetSizer != nullptr) {
+		if (widgetSizer != null) {
 			widgetSizer->propertyMode.set(ewol::widget::Sizer::modeHori);
 			widgetSizer->propertyExpand.set(bvec2(true,false));
 			widgetSizer->propertyFill.set(bvec2(true,true));
@@ -246,8 +246,8 @@ void appl::MainWindows::updateProperty() {
 					ewol::widget::EntryShared widgetTmp = ewol::widget::Entry::create();
 					widgetSizer->subWidgetAdd(widgetTmp);
 					eproperty::Value<etk::String>* paramValue = dynamic_cast<eproperty::Value<etk::String>*>(param);
-					if (paramValue == nullptr) {
-						APPL_ERROR("nullptr...");
+					if (paramValue == null) {
+						APPL_ERROR("null...");
 						return;
 					}
 					etk::String value = paramValue->get();
@@ -266,8 +266,8 @@ void appl::MainWindows::updateProperty() {
 					ewol::widget::SpinShared widgetTmp = ewol::widget::Spin::create();
 					widgetSizer->subWidgetAdd(widgetTmp);
 					eproperty::Value<gale::Dimension>* paramValue = dynamic_cast<eproperty::Value<gale::Dimension>*>(param);
-					if (paramValue == nullptr) {
-						APPL_ERROR("nullptr... 2 ");
+					if (paramValue == null) {
+						APPL_ERROR("null... 2 ");
 						return;
 					}
 					gale::Dimension value = paramValue->get();
@@ -335,8 +335,8 @@ void appl::MainWindows::updateProperty() {
 					ewol::widget::CheckBoxShared widgetTmp = ewol::widget::CheckBox::create();
 					widgetSizer->subWidgetAdd(widgetTmp);
 					eproperty::Value<bvec2>* paramValue = dynamic_cast<eproperty::Value<bvec2>*>(param);
-					if (paramValue == nullptr) {
-						APPL_ERROR("nullptr... 2 ");
+					if (paramValue == null) {
+						APPL_ERROR("null... 2 ");
 						return;
 					}
 					bvec2 value = paramValue->get();
@@ -374,8 +374,8 @@ void appl::MainWindows::updateProperty() {
 					ewol::widget::SpinShared widgetTmp = ewol::widget::Spin::create();
 					widgetSizer->subWidgetAdd(widgetTmp);
 					eproperty::Value<ivec2>* paramValue = dynamic_cast<eproperty::Value<ivec2>*>(param);
-					if (paramValue == nullptr) {
-						APPL_ERROR("nullptr... 2 ");
+					if (paramValue == null) {
+						APPL_ERROR("null... 2 ");
 						return;
 					}
 					ivec2 value = paramValue->get();
@@ -413,8 +413,8 @@ void appl::MainWindows::updateProperty() {
 					ewol::widget::SpinShared widgetTmp = ewol::widget::Spin::create();
 					widgetSizer->subWidgetAdd(widgetTmp);
 					eproperty::Value<uivec2>* paramValue = dynamic_cast<eproperty::Value<uivec2>*>(param);
-					if (paramValue == nullptr) {
-						APPL_ERROR("nullptr... 2 ");
+					if (paramValue == null) {
+						APPL_ERROR("null... 2 ");
 						return;
 					}
 					uivec2 value = paramValue->get();
@@ -452,8 +452,8 @@ void appl::MainWindows::updateProperty() {
 					ewol::widget::SpinShared widgetTmp = ewol::widget::Spin::create();
 					widgetSizer->subWidgetAdd(widgetTmp);
 					eproperty::Value<vec2>* paramValue = dynamic_cast<eproperty::Value<vec2>*>(param);
-					if (paramValue == nullptr) {
-						APPL_ERROR("nullptr... 2 ");
+					if (paramValue == null) {
+						APPL_ERROR("null... 2 ");
 						return;
 					}
 					vec2 value = paramValue->get();
@@ -494,8 +494,8 @@ void appl::MainWindows::updateProperty() {
 					widgetSizer->subWidgetAdd(widgetTmp);
 					esignal::Connection conn = widgetTmp->signalValue.connect(
 						[=](const bool& _value) {
-							if (m_subWidget == nullptr) {
-								APPL_ERROR("nullptr...");
+							if (m_subWidget == null) {
+								APPL_ERROR("null...");
 								return;
 							}
 							APPL_INFO("set parameter : name=" << param->getName() << " value=" << _value);
@@ -581,7 +581,7 @@ void appl::MainWindows::updateProperty() {
 			}
 		}
 		ewol::widget::SpacerShared mySpacer = ewol::widget::Spacer::create();
-		if (mySpacer != nullptr) {
+		if (mySpacer != null) {
 			mySpacer->propertyExpand.set(bvec2(true,false));
 			mySpacer->propertyFill.set(bvec2(true,false));
 			mySpacer->propertyMinSize.set(vec2(3,3));
diff --git a/tools/visual_test/appl/init.cpp b/tools/visual_test/appl/init.cpp
index e19966a5..84ae5a2d 100644
--- a/tools/visual_test/appl/init.cpp
+++ b/tools/visual_test/appl/init.cpp
@@ -56,13 +56,13 @@ namespace appl {
 				APPL_INFO("==> START ... (BEGIN)");
 				
 				ememory::SharedPtr<appl::MainWindows> basicWindows = appl::MainWindows::create();
-				if (basicWindows == nullptr) {
+				if (basicWindows == null) {
 					APPL_ERROR("Can not allocate the basic windows");
 					return;
 				}
 				// create the specific windows
 				_context.setWindows(basicWindows);
-				if (basicWindows == nullptr) {
+				if (basicWindows == null) {
 					APPL_ERROR("Can not allocate the basic windows");
 					_context.exit(-1);
 					return;
diff --git a/tools/visual_test/appl/widget/SizerColor.cpp b/tools/visual_test/appl/widget/SizerColor.cpp
index 19fd021c..1e7a7ae1 100644
--- a/tools/visual_test/appl/widget/SizerColor.cpp
+++ b/tools/visual_test/appl/widget/SizerColor.cpp
@@ -46,7 +46,7 @@ void appl::widget::SizerColor::onRegenerateDisplay() {
 	vec2 underSize(0,0);
 	vec2 underOrigin(999999999999.0,999999999999.0);
 	for (auto &it : m_subWidget) {
-		if (it == nullptr) {
+		if (it == null) {
 			continue;
 		}
 		vec2 size = it->getSize();
@@ -63,7 +63,7 @@ void appl::widget::SizerColor::onRegenerateDisplay() {
 	vec2 localWidgetSize = m_size - tmpBorderSize*2.0f;
 	vec2 localWidgetOrigin = m_origin + tmpBorderSize;
 	for (auto &it : m_subWidget) {
-		if (it == nullptr) {
+		if (it == null) {
 			continue;
 		}
 		vec2 origin = it->getOrigin();