title: Developing pyqt4 tree widget
body: <p>i need to write a tree?, in pyqt. It looks like this:</p>
  
  <pre><code>Clients(this is text)  
     Type A (this is a Clients child and has a checkbox)  
      Type B (this is a Clients child and has a checkbox)  
  Vendors(this is text) 
      Mary  (this is a Vendors child and has a checkbox)   
      Arnold  (this is a Vendors child and has a checkbox)  
  Time Period  
      Init(this is a Time Period child, and would be a calendarWidget for date selection)  
      End (this is a Time Period child, and would be a calendarWidget for date selection)  
  </code></pre>
  
  <p>What would you recommend for this? <code>QTreeWidget</code>? <code>QTreeView?</code> 
  This will be clickable items that i'll use to build sql queries.<br>
  Thanks for reading.</p>