title: navigate between widgets using arrows in QT
body: <p>I'm working on UI using QT. The ui is simple, it's app based like IPhone or Android. Say there are 9 items (3 rows x 3 cols).</p>
  
  <p>What I want to do is to navigate between widgets using arrow keys. 
  If the focus is in [row 1,col 1] and I press down arrow, I want it to go to [row 2, col 1]
  another example.
  If the focus is in [row 2,col 3] and I press up arrow, I want it to go to [row 1, col 3]</p>
  
  <p>But the current behavior is up and right always go to next widget and down and left always go to previous widget.</p>
  
  <p>Is there any way to do this in qt? or I need to create some algorithm to do this?</p>
  
  <p>Thanks</p>