bug fix from Werner

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@73723 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
bug fix from Werner

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@73724 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775