-void wxWindowMac::GetTextExtent(const wxString& str, int *x, int *y,
- int *descent, int *externalLeading, const wxFont *theFont ) const
+void wxWindowMac::DoGetTextExtent(const wxString& str,
+ int *x, int *y,
+ int *descent,
+ int *externalLeading,
+ const wxFont *theFont) const