[Bug 10142] Window Management Bug

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=10142





--- Comment #22 from David Taylor <davidt-wine at yadt.co.uk>  2008-09-28 18:39:46 ---
Well, bug 2368 seems to suggest a similar problem affects fvwm2.  Don't have
time to check it tonight, might try tomorrow.

Anyway, I attached trace logs from with and without my fix.  With my fix has an
added trace logging the values of the conditions which X11DRV_SetWindowPos uses
to determine whether or not to unmap the window, plus I added (sw_flags &
SWP_NOMOVE).

When SetWindowPos is called for a window which is positioned off-screen,
event_type ends up as 0, the rectangle is not mapped, so the window is
unmapped.  It does not get re-mapped or put back on screen when I switch back. 
The patch prevents the window being unmapped as a result of the extra calls of
SetWindowPos which don't actually move the window.


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