title: Is it possible to sort numbers in a QTreeWidget column?
body: <p>I have a QTreeWidget with a column filled with some numbers, how can I sort them?</p>
  
  <p>If I use setSortingEnabled(true); I can sort correctly only strings, so my column is sorted:</p>
  
  <p>1
     10
     100
     2
     20
     200</p>
  
  <p>but this is not the thing I want!
  Suggestions?</p>