void SDLFreeBitmapPointers(Bitmap *);
void SDLBlitSurface(SDL_Surface *, SDL_Surface *, int, int, int, int, int, int);
void SDLCopyArea(Bitmap *, Bitmap *, int, int, int, int, int, int, int);
void SDLFreeBitmapPointers(Bitmap *);
void SDLBlitSurface(SDL_Surface *, SDL_Surface *, int, int, int, int, int, int);
void SDLCopyArea(Bitmap *, Bitmap *, int, int, int, int, int, int, int);