-void wxMetafileDC::GetTextExtent(const wxString& WXUNUSED(string),
-                                 long *WXUNUSED(x),
-                                 long *WXUNUSED(y),
-                                 long *WXUNUSED(descent),
-                                 long *WXUNUSED(externalLeading),
-                                 wxFont *theFont,
-                                 bool WXUNUSED(use16bit) ) const
+void wxMetafileDCImpl::DoGetTextExtent(const wxString& WXUNUSED(string),
+                                     wxCoord *WXUNUSED(x),
+                                     wxCoord *WXUNUSED(y),
+                                     wxCoord *WXUNUSED(descent),
+                                     wxCoord *WXUNUSED(externalLeading),
+                                     const wxFont *theFont) const