title: How to make a simple window with one button using OpenCV HighGui only?
body: <p>I am working on a game-project using OpenCV. Now I have to make a simple GUI: a window with one button, using HighGui only.</p>
  
  <p>I'm not sure but I think I'm supposed to use something like this:</p>
  
  <pre><code>cvNamedWindow( "NameWindow" , CV_WINDOW_AUTOSIZE);
  </code></pre>
  
  <p>Any help is much appreciated.</p>