ok guys, im used to figure everything out the hard way (without assistance and good advices), but i really need an answer this time: somehow the SDL_UpdateRect-function doesn't work with my environment, although the SDL_Flip function works fine; when i change all Flips to updaterects, my monitor sets up full screen mode, but remains black. my code: void DrawIMG(SDL_Surface *img, int x, int y, int w, int h, int x2, int y2) { SDL_Rect dest; SDL_Rect dest2; dest.x = x; dest.y = y; dest2.x = x2; dest2.y = y2; dest.w = w; dest2.h = h; SDL_BlitSurface(img, &dest2, screen, &dest); SDL_UpdateRect(screen, 0, 0, 0, 0); } did i do anything wrong?? if something is stupid and it works, it ain''t stupid [edited by - Aries23 on August 13, 2002 6:18:36 AM]

thanks for the info. unfortunatelly i tried all the things u listed before, but nothing worked. i''ll leave my environment now as it is currently; i thought i could improve performance with the updaterect function. now, as i get more than 500fps, i don''t need any help on this topic anymore. thanks for the reply though.