title: Change background of SDL2 window?
body: <p>I can create a SDL2 window but I don't know how to change background color of this window.</p>
  
  <p>My code:</p>
  
  <pre><code>#include "SDL.h"
  
  SDL_Window *window;
  
  void main()
  {
      window = SDL_CreateWindow("TEST", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 640, 480, SDL_WINDOW_SHOWN);
  
      SDL_Delay(3000);
  }
  </code></pre>
  
  <p>How can I change background color of this window to black?</p>