Renaming, also adding markdown files

src/Cxx.md

@@ -1375,11 +1375,11 @@ Click [here](http://www.vtk.org/Wiki/VTK/Tutorials/QtSetup) for a tutorial on ho
 
 | Example Name | Description | Image |
 | -------------- | ------------- | ------- |
-[BorderWidgetQt](/Cxx/Qt/BorderWidgetQt) |
+[BarChartQt](/Cxx/Qt/BarChartQt) | Bar chart.
+[BorderWidgetQt](/Cxx/Qt/BorderWidgetQt) |  2D selection, 2D box.
 [EventQtSlotConnect](/Cxx/Qt/EventQtSlotConnect) | Connect a VTK event to a Qt slot.
 [ImageDataToQImage](/Cxx/Qt/ImageDataToQImage) | Convert a vtkImageData to a QImage.
 [QImageToImageSource](/Cxx/Qt/QImageToImageSource) | Convert a QImage to a vtkImageData.
-[QtBarChart](/Cxx/Qt/QtBarChart) |
 [RenderWindowNoUiFile](/Cxx/Qt/RenderWindowNoUiFile) | This is a very basic example that shows how to create a Qt window. Typically, one would want to design a form in the QtDesigner (this is shown in [RenderWindowUIMultipleInheritance](/Cxx/Qt/RenderWindowUIMultipleInheritance)).
 [RenderWindowUIMultipleInheritance](/Cxx/Qt/RenderWindowUIMultipleInheritance) | Using a QVTKOpenGLWidget with the Qt Multiple Inheritance model.
 [RenderWindowUISingleInheritance](/Cxx/Qt/RenderWindowUISingleInheritance) | Using a QVTKOpenGLWidget with the Qt Single Inheritance model.