title: How to set absolute position of the widgets in qt
body: <p>I am using QT to develop a rich UI application. </p>
  
  <ol>
  <li>I need to position widgets at absolute positions</li>
  <li>I should be able to put the widget in background / foreground to add a few effects. </li>
  </ol>
  
  <p>Simple example would be, I have to show a boiler with the water level inside the feed tank. </p>
  
  <ol>
  <li>Take a feed tank image and embed in a label.</li>
  <li>Position a progress bar in the center of the feedtank to display water level. </li>
  </ol>
  
  <p>Now in this case the progress bar would be in the foreground and the label in the background. </p>
  
  <p>Regards,</p>