title: How can I close Gtk# Window
body: <p>I have 2 fullscreen window in my Gtk# application, primary and secondary. I have buttonClose in second form's that click event handler must close this window and make some operation:</p>
  
  <pre><code>    protected void OnButtonClose_Clicked (object sender, EventArgs e)
      {
          //some operation
  
          this.Dispose ();                        
      }
  </code></pre>
  
  <p>But window doesn't close! If I use this code in Primary window, that window will close and application will terminate. Why this code works for primary window and doesn't works for secondary? How can I close secondary window?</p>