[Bug 34315] HWND_NOTOPMOST makes window disappear behind other windows

http://bugs.winehq.org/show_bug.cgi?id=34315

--- Comment #7 from Lope  2013-08-21 12:32:07 CDT ---
A HWND_TOP window can only be on top of other HWND_TOP windows IF it's in
focus. Simply setting HWND_TOP on a window actually does nothing besides
clearing HWND_BOTTOM.
You need TOPMOST to make it the most top window, because all windows are
HWND_TOP. The value of HWND_TOP is 0.
Its probably default when you create a window with pure API.

To be really explicit:
The wine bug is simply setting HWND_NOTOPMOST makes the HWND_TOP window fall
behind another HWND_TOP window that is in focus.

I expect this is a logic difference with how windows are positioned on Windows
vs Linux.