I've been trying to make a circular shape control, but because the control is rectangle, it has some area I intend to keep empty painted over.
What I need is to be able to set that area as transparent, and even more importantly, make sure mouse clicks on a transparent area aren't caught by the control. (They should be caught by the underlyings underlying controls).
For forms, I'd simply set the transparent area to a color, and set the transparent color of the form to that specific color. However I didn't find the prorperty in controls.
Thanks for any help.