title: PyGTK how to "load-on-demand" data to TreeView
body: <p>I'm using PyGTK TreeView (as list) for my data. Is there any way to <strong>load</strong> more data <strong>on demand</strong> by going throu the list.</p>
  
  <p><em>For example</em>:</p>
  
  <p>I have database table where is 200 000 records. At application start- loads 200 records from table. when i scroll download more data to treeView.</p>