title: Insert a copy or image of a widget into QGridLayout
body: <p>I have a four-panel QGridLayout and want to reserve one of the panels for a miniature view of other widgets like 3D views. The specific widget which I want to show inside QGridLayout is to be specified dynamically.</p>
  
  <p>However, when I pass a widget to QGridLayout via <code>QGridLayout::addWidget</code>, the widget disappears from where it was before. Obviously, this is a policy of QGridLayout.</p>
  
  <p>Is there a workaround to avoid this? Can I tell QGridLayout to retain a copy of a specific widget I am adding? Is there a way to pass a copy or an image of the widget? I just don't have a clue at this point.</p>
  
  <p>Thanks in advance!</p>