Return a pointer to an array of available screen dimensions for the given +format and video flags, sorted largest to smallest. Returns +NULL if there are no dimensions available for a particular +format, or -1 if any dimension is okay for +the given format.
If format is NULL, the mode list +will be for the format returned by SDL_GetVideoInfo()->vfmt. The flag parameter is an OR'd combination of surface flags. The flags are the same as those used SDL_SetVideoMode and they play a strong role in deciding what modes are valid. For instance, if you pass SDL_HWSURFACE as a flag only modes that support hardware video surfaces will be returned.
SDL_Rect **modes;
+int i;
+.
+.
+.
+
+/* Get available fullscreen/hardware modes */
+modes=SDL_ListModes(NULL, SDL_FULLSCREEN|SDL_HWSURFACE);
+
+/* Check is there are any modes available */
+if(modes == (SDL_Rect **)0){
+ printf("No modes available!\n");
+ exit(-1);
+}
+
+/* Check if our resolution is restricted */
+if(modes == (SDL_Rect **)-1){
+ printf("All resolutions available.\n");
+}
+else{
+ /* Print valid modes */
+ printf("Available Modes\n");
+ for(i=0;modes[i];++i)
+ printf(" %d x %d\n", modes[i]->w, modes[i]->h);
+}
+.
+.