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/metafile.h

@@ -88,7 +88,7 @@ public:
 
     // Should be called at end of drawing
     virtual wxMetafile *Close();
-    virtual void SetMapMode(int mode);
+    virtual void SetMapMode(wxMappingMode mode);
     virtual void GetTextExtent(const wxString& string, long *x, long *y,
             long *descent = NULL, long *externalLeading = NULL,
             const wxFont *theFont = NULL, bool use16bit = FALSE) const;