read at the first menu border image the top left pixel to set as transparent for the image.

src/gfx.c

@@ -1,4 +1,4 @@
-/* $Id: gfx.c,v 1.28 2003/12/24 02:38:15 stpohle Exp $ */
+/* $Id: gfx.c,v 1.29 2003/12/31 01:00:11 stpohle Exp $ */
 /* gfx.c */
 
 #include "bomberclone.h"
@@ -158,6 +158,7 @@ void
 gfx_loaddata ()
 {
     int i, j;
+	int r,g,b;
     char filename[255];
     SDL_Surface *tmpimage,
      *tmpimage1;
@@ -190,7 +191,9 @@ gfx_loaddata ()
     	    printf ("Can't load image: %s\n", SDL_GetError ());
         	exit (1);
 	    }
-	    SDL_SetColorKey (tmpimage, SDL_SRCCOLORKEY, SDL_MapRGB (tmpimage->format, 255, 255, 255));
+		if (i == 0)
+			getRGBpixel (tmpimage, 0, 0, &r, &g, &b);
+	    SDL_SetColorKey (tmpimage, SDL_SRCCOLORKEY, SDL_MapRGB (tmpimage->format, r,g,b));
     	menu.images[i] = SDL_DisplayFormat (tmpimage);
 	    SDL_FreeSurface (tmpimage);
 	}