title: Is there an easy way to make a collapsible QWidget?
body: <p>Often on web pages, there are whole areas that contain content that can be reduced to only the title. Is there a way to achieve the same with a <code>QWidget</code>?</p>
  
  <p>For a very simple example of this functionality, see the screenshots <a href="http://wordpress.org/plugins/collapsible-widget-area/screenshots/" rel="nofollow">here</a>. Of course, the contents should be any <code>QLayout</code>, and thus arbitrary.</p>