extern int dither_char_bitmap(void);
extern int XInitDither(Display *  , int  , GC  , unsigned long  , unsigned long );
extern int XChangeDither(Display *  , GC  , int );
extern void XDitherRectangle(Display *  , Drawable  , GC  , int  , int  , unsigned int  , unsigned int );
extern void XDitherRectangles(Display *  , Drawable  , GC  , XRectangle *  , int );
extern void XDitherPolygon(Display *  , Drawable  , GC  , XPoint *  , int  , int  , int );
extern void XDitherArc(Display *  , Drawable  , GC  , int  , int  , unsigned int  , unsigned int  , int  , int );
extern void XDitherArcs(Display *  , Drawable  , GC  , XArc *  , int );