Under certain conditions, selecting a menu item triggers an assert in toplevel.cpp:1539:
 wxASSERT_MSG( m_menuDepth > 0, wxS("No open menus?") );

The conditions to reproduce:
- Windows 8.1
- An application manifest that indicates Windows 8.1 compatibility

In this case, wxGetWinVersion() used to return wxWinVersion_Unknown (Without a manifest indicating 8.1 support, wxWinVersion_8 is being returned). This in turn causes the version check against Windows98 in toplevel.cpp:450 to fail, ultimately leading to the mentioned assert.

See http://msdn.microsoft.com/en-us/library/windows/desktop/ms724439%28v=vs.85%29.aspx for details.

This patch on trunk adjusts adds the wxWinVersion_8_1 enum value and returns it on Windows 8.1 if the program is manifested as such.

In future, a different approach needs to be chosen that does not depend the deprecated GetVersion function.




git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76714 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775