inline void FreeBitmap(Bitmap *);
inline void BlitBitmap(Bitmap *, Bitmap *, int, int, int, int, int, int);
inline void ClearRectangle(Bitmap *, int, int, int, int);
inline void FreeBitmap(Bitmap *);
inline void BlitBitmap(Bitmap *, Bitmap *, int, int, int, int, int, int);
inline void ClearRectangle(Bitmap *, int, int, int, int);