[Bug 22750] ControlSpy message parameters listboxes don't have frames

wine-bugs at winehq.org wine-bugs at winehq.org
Tue May 18 13:35:21 CDT 2010


http://bugs.winehq.org/show_bug.cgi?id=22750





--- Comment #4 from Andrew Eikum <aeikum at codeweavers.com>  2010-05-18 13:35:20 ---
So of course this is more complicated than I hoped.  Apparently I haven't
learned to not trust MSDN yet...

When a window is created with CreateDialogIndirectParam, it can have whatever
exStyle, but the effects of some of the flags are ignored.  However, future
calls to GetWindowLong(GWL_EXSTYLE) yield the same exStyle flags as you passed
in, meaning the original exStyle hangs around; the ignored flags aren't simply
masked out.  This means it's possible to have a dialog with WS_EX_MDICHILD
despite not having an MDI owner window.  Great.

As expected, hacking around the MDI sanity checks in CreateWindowEx just leads
to crashes later, as Wine treats the window as you'd expect for an MDICHILD.  A
hack to get both cases working is just to mask out the WS_EX_MDICHILD, but
that's obviously incorrect based on the above.

If a fix is not found for this before 1.2, I suggest reverting my original
commit (897f11d33178).  Better to have the majority of cases working than the
obscure minority case I was attempting to fix.

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