Transparent hole in wxFrame background

Question

Is there a way to cut a transparent rectangle in the background of a wxFrame to see the desktop or other windows behind that rect?

Custom shape is not an option since I want to capture mouse events there too.

Answer 1

No, the only possibilities here are using a custom shape or SetTransparent() but the latter can only set the transparency uniformly.

SetTransparent() could probably be extended to be more flexible, but so far nobody has done it.