title: QGridLayout: change height of a row
body: <p>I'm new at qt and now my window looks like this:</p>
  
  <pre><code>*---------* *---------* *---------* *---------* 
  |ListView1| |ListView2| |ListView3| |ListView4| 
  |         | |         | |         | |         |
  *---------* *---------* *---------* *---------* 
  *---------------------------------------------*
  |                                             |
  |                  ListView5                  |
  |                                             |
  *---------------------------------------------*    
  *---------------------------------------------*
  |                  GridLayout2                |
  |                                             |
  *---------------------------------------------*
  </code></pre>
  
  <p>The problem is that second row (ListView5) is higher than first and third rows, while I want first row to be higher than third row, which should be higher than second row. Is there a way to do it? Or should I use something else insted of gridlayout? Thanks.</p>