title: How to set QWidget fullscreen (but "real" fullscreen, change resolution, set modal to whole system)?
body: <p>I'm trying to make a game using Qt, cause it is so awesome ;) and you have all the stuff you need for free. The only problem is in changing system resolution and setting QWidget (or QGLWidget) "real" fullscreen.</p>
  
  <p>Have any one of you managed to do something like this? How was the portability of such approach? I'd like to deploy my app on all desktop systems.</p>
  
  <p>Maybe use SDL or something like SMFL to make it fullscreen?</p>
  
  <p>Pls, share your hacks!</p>
  
  <p>Cheers. </p>