[Bug 31434] New: Menu is activated by alt key while mouse button is down

http://bugs.winehq.org/show_bug.cgi?id=31434

Bug #: 31434
           Summary: Menu is activated by alt key while mouse button is
                    down
           Product: Wine
           Version: 1.5.10
          Platform: x86
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: user32
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
    Classification: Unclassified

Created attachment 41320
  --> http://bugs.winehq.org/attachment.cgi?id=41320
user32: Menu should not be activated by menu key while mouse buttons are down.

When using and Alt+MouseButton combination, the application menu becomes
selected after releasing Alt.

More specifically, in 3ds Max 9, when using the Alt+MiddleMouse in a viewport
to rotate, after releasing Alt the File menu will be selected, and the viewport
will appear as if frozen to the user, not accepting any input until Alt is
pressed again to release the menu.

Patch with fix attached.