title: Qt->QGraphicsView->QGraphicsItem resizing
body: <p>I'm pretty new to QGraphicsView in Qt.</p>
  
  <p>As far as I can tell there is no built in way to resize a QGraphicsItem in a scene with a mouse.</p>
  
  <p>What I'm looking for is to be able to resize a QGraphicsRectItem by either dragging out the corners or the edges on screen.</p>
  
  <p>Is there a simple way to do that? Is there a library or a piece of code somewhere online that implements this functionality?</p>
  
  <p>I'm currently using Qt 4.5.1.</p>