Christof,
SetWindowRgn() didn't do anything obvious.

Spy++ seems to show that messages aren't getting through. I've uploaded spy++ screen prints of message lists from the blank form as I drag it arounds and a good form as I drag it around, off screen, behind other forms.

Thanks a bunch.

Gary



>Hi Gary,
>
>this is really strange... I could understand if you don't see anything at all. But the "X"'s being printed, but the ActiveX control not seems a bit bizarre... What happens if you run the following code:
>

>Declare SetWindowRgn in win32api Long, long, long
>SetWindowRgn(oForm.hwnd,0,1)
>

>With Spy++ you can also display window messages. Does the form receive any WM_PAINT messages when you move another form over it?