change generic ints to enums in wxDC (closes #9959)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@57907 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/palmos/dcprint.h

@@ -42,7 +42,8 @@ protected:
     virtual bool DoBlit(wxCoord xdest, wxCoord ydest,
                         wxCoord width, wxCoord height,
                         wxDC *source, wxCoord xsrc, wxCoord ysrc,
-                        int rop = wxCOPY, bool useMask = FALSE, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
+                        wxRasterOperationMode rop = wxCOPY, bool useMask = FALSE,
+                        wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
 
     // init the dc
     void Init();