[Bug 28678] DirectDraw primary buffer is obscured by transparent window

http://bugs.winehq.org/show_bug.cgi?id=28678

--- Comment #4 from Henri Verbeet  2011-10-12 12:04:04 CDT ---
(In reply to comment #3)
> Haven't tested that, I'm going to try to write a small app to test this. I
> don't really understand how it actually happens that the rectangle is obscured
> though. Is it based on Z-ordering of windows and ddraw->wined3d_frontbuffer has
> an attached Z-buffer?

We don't do anything special about this in ddraw/wined3d. From your description
it sounds like the gray rectangle you're seeing is the dialog painting its
background while it shouldn't (because of WS_EX_TRANSPARENT).