[Bug 2082] DirectDraw games only showing black screen

http://bugs.winehq.org/show_bug.cgi?id=2082

--- Comment #132 from Ken Thomases  ---
(In reply to comment #131)
> We also have tests that show that switching to fullscreen does have an effect
> on e.g. window dimensions, z-order and focus.

I found tests for the foreground window in dlls/ddraw/tests/ddrawmodes.c,
testcooperativelevels_normal() and testcooperativelevels_exclusive().  I didn't
find other tests related to z-order.  Please let me know if I missed them.

As we've seen with this bug, a window may be the foreground window without
being front-most, in particular if it owns other windows.  Also if it's
non-topmost and there are topmost windows.

I'll try to extend the tests to test some possibilities with respect to actual
z-order viz-a-viz owned, topmost, and other windows.

With respect to a WGL extension, were you thinking of something like an
alternative to wglMakeCurrent() such as wglMakeCurrentFullScreenWINE()?