http://bugs.winehq.org/show_bug.cgi?id=34315
--- Comment #2 from Lope lopeonline@gmail.com 2013-08-21 10:42:32 CDT --- Hi Bruno,
I have submitted this bug report and test program to help improve wine.
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Regarding workarounds
Your suggested workaround does not work. HWND_TOP by itself doesn't bring the window ontop of others so it stays behind whatever is on the screen.
I have implemented a workaround that uses wine detection. I exclude the call to NOTOPMOST and then call NOTOPMOST once the user has clicked a button in my program. It ugly, but it works.