Update the background of dialog box..

Hi all..

I made my dialog box transparent.. so that when i draw something on dialog it looks like i draw on desktop screen. Now when i put another window over the drawn stuff it took previous window background. How do i overcome this.. Attached my small project.. Please take a look..

Thanks...

I'm not quite sure if this is what your looking for, but this demo sounds very much like your idea

http://www.codeproject.com/KB/static/BigClock.aspx

Hope it helps!