virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=true );
virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=true, int index=-1 );
virtual bool DoLoadFile( wxImage *image, wxInputStream& stream, bool verbose, int index );
virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=true );
virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=true, int index=-1 );
virtual bool DoLoadFile( wxImage *image, wxInputStream& stream, bool verbose, int index );