diff --git a/test/Windows.cpp b/test/Windows.cpp
index 126d862..929264d 100644
--- a/test/Windows.cpp
+++ b/test/Windows.cpp
@@ -12,6 +12,7 @@
 #include <ewol/widget/Label.h>
 #include <etk/tool.h>
 #include <eaudiofx/eaudiofx.h>
+#include <ewol/widget/Button.h>
 
 #include <eaudiofx/base/GeneratorFile.h>
 #include <eaudiofx/core/BlockDecoder.h>
@@ -29,6 +30,7 @@ appl::Windows::Windows() {
 }
 
 void appl::Windows::init() {
+	ewol::widget::Windows::init();
 	setTitle("example 001_HelloWord");
 	std::string composition = std::string("");
 	composition += "<sizer mode='vert'>\n";
@@ -53,88 +55,86 @@ void appl::Windows::init() {
 		return;
 	}
 	setSubWidget(m_composer);
-	m_composer->registerOnEventNameWidget(shared_from_this(), "bt-play1", "pressed", g_eventPlay1);
-	m_composer->registerOnEventNameWidget(shared_from_this(), "bt-play2", "pressed", g_eventPlay2);
+	composerBind(ewol::widget::Button, "bt-play1", signalPressed, shared_from_this(), &appl::Windows::onCallbackPlay);
+	composerBind(ewol::widget::Button, "bt-play2", signalPressed, shared_from_this(), &appl::Windows::onCallbackStop);
 }
 
 eaudiofx::Processing* process = NULL;
 
-void appl::Windows::onReceiveMessage(const ewol::object::Message& _msg) {
-	if (_msg.getMessage() == g_eventPlay1) {
-		#if 0
-			APPL_INFO("Play Requested ...");
-			process = new eaudiofx::Processing();
-			if (process == NULL) {
-				APPL_ERROR("can not create processing ...");
-				return;
-			}
-			APPL_INFO("Create Generator ...");
-			eaudiofx::GeneratorSignal* generator = new eaudiofx::GeneratorSignal();
-			if (generator == NULL) {
-				APPL_ERROR("can not create Generator ...");
-				return;
-			}
-			generator->setName("myGenerator");
-			process->addBlock(generator);
-			APPL_INFO("Create Receiver ...");
-			eaudiofx::ReceiverRtAudio* receiver = new eaudiofx::ReceiverRtAudio();
-			if (receiver == NULL) {
-				APPL_ERROR("can not create Receiver ...");
-				return;
-			}
-			receiver->setName("myReceiver");
-			process->addBlock(receiver);
-			
-			process->linkBlock("myGenerator", "out","myReceiver", "in");
-			
-			process->start();
+void appl::Windows::onCallbackPlay() {
+	#if 0
+		APPL_INFO("Play Requested ...");
+		process = new eaudiofx::Processing();
+		if (process == NULL) {
+			APPL_ERROR("can not create processing ...");
 			return;
-		#else
-			APPL_INFO("Play Requested ...");
-			process = new eaudiofx::Processing();
-			if (process == NULL) {
-				APPL_ERROR("can not create processing ...");
-				return;
-			}
-			APPL_INFO("Create Generator ...");
-			eaudiofx::GeneratorFile* generator = new eaudiofx::GeneratorFile();
-			if (generator == NULL) {
-				APPL_ERROR("can not create Generator ...");
-				return;
-			}
-			generator->setName("myGenerator");
-			process->addBlock(generator);
-			
-			APPL_INFO("Create DECODER ...");
-			eaudiofx::BlockDecoder* decoder = new eaudiofx::BlockDecoder();
-			if (decoder == NULL) {
-				APPL_ERROR("can not create Generator ...");
-				return;
-			}
-			decoder->setName("myDecoder");
-			process->addBlock(decoder);
-			
-			APPL_INFO("Create Receiver ...");
-			eaudiofx::ReceiverRtAudio* receiver = new eaudiofx::ReceiverRtAudio();
-			if (receiver == NULL) {
-				APPL_ERROR("can not create Receiver ...");
-				return;
-			}
-			receiver->setName("myReceiver");
-			process->addBlock(receiver);
-			
-			process->linkBlock("myGenerator", "out","myDecoder", "in");
-			process->linkBlock("myDecoder", "out","myReceiver", "in");
-			
-			process->start();
-			return;
-		#endif
-	}
-	if (_msg.getMessage() == g_eventPlay2) {
-		if (process != NULL) {
-			process->stop();
 		}
+		APPL_INFO("Create Generator ...");
+		eaudiofx::GeneratorSignal* generator = new eaudiofx::GeneratorSignal();
+		if (generator == NULL) {
+			APPL_ERROR("can not create Generator ...");
+			return;
+		}
+		generator->setName("myGenerator");
+		process->addBlock(generator);
+		APPL_INFO("Create Receiver ...");
+		eaudiofx::ReceiverRtAudio* receiver = new eaudiofx::ReceiverRtAudio();
+		if (receiver == NULL) {
+			APPL_ERROR("can not create Receiver ...");
+			return;
+		}
+		receiver->setName("myReceiver");
+		process->addBlock(receiver);
+		
+		process->linkBlock("myGenerator", "out","myReceiver", "in");
+		
+		process->start();
 		return;
+	#else
+		APPL_INFO("Play Requested ...");
+		process = new eaudiofx::Processing();
+		if (process == NULL) {
+			APPL_ERROR("can not create processing ...");
+			return;
+		}
+		APPL_INFO("Create Generator ...");
+		eaudiofx::GeneratorFile* generator = new eaudiofx::GeneratorFile();
+		if (generator == NULL) {
+			APPL_ERROR("can not create Generator ...");
+			return;
+		}
+		generator->setName("myGenerator");
+		process->addBlock(generator);
+		
+		APPL_INFO("Create DECODER ...");
+		eaudiofx::BlockDecoder* decoder = new eaudiofx::BlockDecoder();
+		if (decoder == NULL) {
+			APPL_ERROR("can not create Generator ...");
+			return;
+		}
+		decoder->setName("myDecoder");
+		process->addBlock(decoder);
+		
+		APPL_INFO("Create Receiver ...");
+		eaudiofx::ReceiverRtAudio* receiver = new eaudiofx::ReceiverRtAudio();
+		if (receiver == NULL) {
+			APPL_ERROR("can not create Receiver ...");
+			return;
+		}
+		receiver->setName("myReceiver");
+		process->addBlock(receiver);
+		
+		process->linkBlock("myGenerator", "out","myDecoder", "in");
+		process->linkBlock("myDecoder", "out","myReceiver", "in");
+		
+		process->start();
+		return;
+	#endif
+}
+
+void appl::Windows::onCallbackStop() {
+	if (process != NULL) {
+		process->stop();
 	}
 }
 
diff --git a/test/Windows.h b/test/Windows.h
index 0bbe533..8b86b88 100644
--- a/test/Windows.h
+++ b/test/Windows.h
@@ -21,8 +21,10 @@ namespace appl {
 			void init();
 		public:
 			DECLARE_FACTORY(Windows);
-		public: // herited functions
-			virtual void onReceiveMessage(const ewol::object::Message& _msg);
+		public: // callback functions
+			void onCallbackPlay();
+			void onCallbackStop();
+			
 	};
 };