virtual bool Blit( long xdest, long ydest, long width, long height,
wxDC *source, long xsrc, long ysrc, int logical_func = wxCOPY, bool useMask=FALSE ) = 0;
virtual bool Blit( long xdest, long ydest, long width, long height,
wxDC *source, long xsrc, long ysrc, int logical_func = wxCOPY, bool useMask=FALSE ) = 0;