title: Catching a click anywhere inside a gtk.Window
body: <p>consider the following python code:</p>
  
  <pre><code>import gtk
  
  class MainWindow():
      def __init__(self):
          self.window = gtk.Window()
          self.window.show()
  
  if __name__ == "__main__":
      main = MainWindow()
      gtk.main()
  </code></pre>
  
  <p>I'd need to catch clicks anywhere inside this gtk.Window().
  I haven't found any suitable event (I also tried <code>button-press-event</code>, but it doesn't work), what am I missing?</p>
  
  <p>Thank you!</p>