title: Dragging a QWidget in QT 5
body: <p>I have to make something like the iOS interface, 3x3 field of icons that can be dragged to change their position, and then remember it in an XML file. </p>
  
  <p>I decided to use Grid class (QWidget is parent) as a container and my own class, inherited from QWidget, as elements. </p>
  
  <p>Now I'm trying to learn how to perform a drag &amp; drop for QWidget, but it seems like you are only able to drop onto a QWidget, but it's impossible to drag it.</p>
  
  <p>Is it impossible? How do I move this thing?</p>