#include <SDL.h>

int main( int argc, char* args[] )
{
//Start SDL
///
  SDL_Init( SDL_INIT_EVERYTHING );

//Quit SDL
///
  SDL_Quit();

return 0;
}

SDL_Window *window;
SDL_Surface *surface;
uint32_t *framebuffer;      // pointer to raw pixel buffer that you can read/write

int init()
{
   // initialize the video subsystem
   if(SDL_Init(SDL_INIT_VIDEO) < 0)
      return 1;

   // make a window
   SDL_Window *window;
   window = SDL_CreateWindow("Window title", x_position, y_position, width, height, SDL_WINDOW_SHOWN);

   // ensure window handle is valid
   if(!window)
      return 1;

   // a surface is a group of pixels displayed on screen
   // return the window's surface
   SDL_Surface *surface;
   surface = SDL_GetWindowSurface(window);

   // ensure compatible surface
   // here, we're looking at a 32-bit little endian RGB buffer
   // basically, the bytes should be BB GG RR 00
   if(surface->format->BitsPerPixel != 32 || surface->format->BytesPerPixel != 4 || surface->format->Rmask != 0xFF0000 || surface->format->Gmask != 0x00FF00 || surface->format->Bmask != 0x0000FF)
      return 1;

   // set up the pointer to the framebuffer
   framebuffer = surface->pixels;

   while(1)
   {
      handle_events();
   }
}

// sample put pixel, assumes 32-bit little endian RGB as we verified above^^

void put_pixel(short x, short y, uint32_t color)
{
   // calculate pixel offsets just like any other graphics programming
   uint32_t *ptr = ((y * (width << 2)) + (x << 2) + framebuffer);

   // to modify pixels yourself, you need to lock the surface to be safe
   SDL_LockSurface(surface);

   ptr[0] = color;      // write the pixel

   // redraw
   SDL_UnlockSurface(surface);
   SDL_UpdateWindowSurface(window);
}