inline void SDLCopyArea(Bitmap *, Bitmap *, int, int, int, int, int, int, int);
inline void SDLFillRectangle(Bitmap *, int, int, int, int, Uint32);
inline void SDLDrawSimpleLine(Bitmap *, int, int, int, int, Uint32);
inline void SDLDrawLine(Bitmap *, int, int, int, int, Uint32);
inline Pixel SDLGetPixel(Bitmap *, int, int);
inline void SDLCopyArea(Bitmap *, Bitmap *, int, int, int, int, int, int, int);
inline void SDLFillRectangle(Bitmap *, int, int, int, int, Uint32);
inline void SDLDrawSimpleLine(Bitmap *, int, int, int, int, Uint32);
inline void SDLDrawLine(Bitmap *, int, int, int, int, Uint32);
inline Pixel SDLGetPixel(Bitmap *, int, int);