[Bug 9875] moving dialogs shows artifacts on window behind it

http://bugs.winehq.org/show_bug.cgi?id=9875

--- Comment #2 from Clinton Stimpson   2007-11-22 02:14:25 ---
Created an attachment (id=9279)
 --> (http://bugs.winehq.org/attachment.cgi?id=9279)
testapp

Example test app that shows the problem.
Run it, and take another program's window and move it over this test app's
window.
Wine leaves artifacts of the other window on the test app's window, because
Wine's RedrawWindow() processes pending expose events.
Windows doesn't leave artifacts.
And this isn't a problem using Wine/X11 on Mac OS X.