inline void SetClipMask(Bitmap *, GC, Pixmap);
inline void SetClipOrigin(Bitmap *, GC, int, int);
inline void BlitBitmapMasked(Bitmap *, Bitmap *, int, int, int, int, int, int);
inline void SetClipMask(Bitmap *, GC, Pixmap);
inline void SetClipOrigin(Bitmap *, GC, int, int);
inline void BlitBitmapMasked(Bitmap *, Bitmap *, int, int, int, int, int, int);