These operator functions are respectively adding and subtracting their arguments. Instead let the functions multiply and divide their arguments (like their wxPoint2DDouble counterparts were doing already). See #10946. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_3_0_BRANCH@76566 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775