:-/

#include <windows.h>
#include <SDL.h>
 
#define WIDTH 640
#define HEIGHT 480
#define DEPTH 32
 
int WINAPI WinMain(
    HINSTANCE hInstance,
    HINSTANCE hPrevInstance,
    LPSTR lpCmdLine,
    int nCmdShow)
{
 
  SDL_Surface *screen;
 
  SDL_Init(SDL_INIT_VIDEO);
 
  screen = SDL_SetVideoMode(WIDTH, HEIGHT, DEPTH, SDL_HWSURFACE);
      /* Code to set a yellow pixel at the center of the screen */
 
    int x, y;
    Uint32 yellow;
 
    /* Map the color yellow to this display (R=0xff, G=0xFF, B=0x00)
       Note:  If the display is palettized, you must set the palette first.
    */
    yellow = SDL_MapRGB(screen->format, 0xff, 0xff, 0x00);
 
    x = screen->w / 2;
    y = screen->h / 2;
 
    /* Lock the screen for direct access to the pixels */
    if ( SDL_MUSTLOCK(screen) ) {
        if ( SDL_LockSurface(screen) < 0 ) {
            fprintf(stderr, "Can't lock screen: %s\n", SDL_GetError());
            return;
        }
    }
 
    putpixel(screen, x, y, yellow);
 
    if ( SDL_MUSTLOCK(screen) ) {
        SDL_UnlockSurface(screen);
    }
    /* Update just the part of the display that we've changed */
    SDL_UpdateRect(screen, x, y, 1, 1);
 
    return;
 
 
while (1){
}
 
  return 0;
}
 
void putpixel(SDL_Surface *surface, int x, int y, Uint32 pixel){
    int bpp = surface->format->BytesPerPixel;
    /* Here p is the address to the pixel we want to set */
    Uint8 *p = (Uint8 *)surface->pixels + y * surface->pitch + x * bpp;
 
    switch(bpp) {
    case 1:
        *p = pixel;
        break;
 
    case 2:
        *(Uint16 *)p = pixel;
        break;
 
    case 3:
        if(SDL_BYTEORDER == SDL_BIG_ENDIAN) {
            p[0] = (pixel >> 16) & 0xff;
            p[1] = (pixel >> 8) & 0xff;
            p[2] = pixel & 0xff;
        } else {
            p[0] = pixel & 0xff;
            p[1] = (pixel >> 8) & 0xff;
            p[2] = (pixel >> 16) & 0xff;
        }
        break;
 
    case 4:
        *(Uint32 *)p = pixel;
        break;
    }
}