Added all *.cpp samples reference to the 2.4.6 documentation as discussed in feature #3169

- Used lunix style slashes - works on most systems
- Removed all trailing whitespaces

modules/highgui/doc/reading_and_writing_images_and_video.rst

@@ -224,6 +224,10 @@ The class provides C++ API for capturing video from cameras or for reading video
 
 .. note:: In C API the black-box structure ``CvCapture`` is used instead of ``VideoCapture``.
 
+.. Sample code::
+
+   * : A basic sample on using the VideoCapture interface can be found at opencv_source_code/samples/cpp/starter_video.cpp
+   * : Another basic video processing sample can be found at opencv_source_code/samples/cpp/video_dmtx.cpp
 
 VideoCapture::VideoCapture
 ------------------------------