virtual void DoGetTextExtent( const wxString &string,
wxCoord *width, wxCoord *height,
wxCoord *descent = (wxCoord *) NULL,
wxCoord *externalLeading = (wxCoord *) NULL,
wxFont *theFont = (wxFont *) NULL) const;
virtual void DoGetTextExtent( const wxString &string,
wxCoord *width, wxCoord *height,
wxCoord *descent = (wxCoord *) NULL,
wxCoord *externalLeading = (wxCoord *) NULL,
wxFont *theFont = (wxFont *) NULL) const;