Hello,
I would like to know how can add an icon on the right click menu on a
shape?
The icon is controlled by the ButtonFace cell with the action.
Select the shape, menu Window -> Show ShapeSheet
In the shape's Actions section (create it if required), the ButtonFace
cell, set it to "21", you will see the EditCut scissor shape.
From the help file on that cell
The IDs that can be used in the ButtonFace cell are the same as the
IDs used with the FaceID property of a CommandBarButton object. For
more details about these IDs, search for "working with command bar
button images" on MSDN.
Even better, put that phrase into Google and you'll find a page on
MSDN.