SDL_UpdateRect - Makes sure the given area is updated on the given screen.

       Makes  sure  the  given  area  is  updated on the given screen. The rectangle must be confined within the
       screen boundaries (no clipping is done).

       If 'x', 'y', 'w' and 'h' are all 0, SDL_UpdateRect will update the entire screen.

       This function should not be called while 'screen' is locked.

       SDL_UpdateRect - Makes sure the given area is updated on the given screen.

SDL_UpdateRects, SDL_Rect, SDL_Surface, SDL_LockSurface

SDL                                          Tue 11 Sep 2001, 23:01                            SDL_UpdateRect(3)

#include"SDL.h"voidSDL_UpdateRect(SDL_Surface*screen,Sint32x,Sint32y,Sint32w,Sint32h);