void (*draw_border_function)(void));
void SDLDrawSimpleLine(Bitmap *, int, int, int, int, Uint32);
void SDLDrawLine(Bitmap *, int, int, int, int, Uint32);
Pixel SDLGetPixel(Bitmap *, int, int);
void SDLPutPixel(Bitmap *, int, int, Pixel);
void (*draw_border_function)(void));
void SDLDrawSimpleLine(Bitmap *, int, int, int, int, Uint32);
void SDLDrawLine(Bitmap *, int, int, int, int, Uint32);
Pixel SDLGetPixel(Bitmap *, int, int);
void SDLPutPixel(Bitmap *, int, int, Pixel);