title: how to keep gtk.window always on top level
body: <p>I am trying to keep a gtk.window on top, but I'm having trouble.</p>
  
  <p>Here is my code so far. The example is in vala gnome (on windows 7).</p>
  
  <pre><code>public void onTop() {
      window.decorated = false;
      window.modal = true;
      window.set_keep_above(true);
  }
  </code></pre>