void SDLInvertArea(Bitmap *, int, int, int, int, Uint32);
void SDLCopyInverseMasked(Bitmap *, Bitmap *, int, int, int, int, int, int);
-#if 1
Bitmap *SDLZoomBitmap(Bitmap *, int, int);
-#else
-void SDLZoomBitmap(Bitmap *, Bitmap *);
-#endif
Bitmap *SDLLoadImage(char *);