wxOSX uses wxGCDC for its wxDC functionality and wxGCDC doesn't implement this operation, even not using the horribly inefficient wxGTK fallback. See #15151. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74244 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775