title: Qt focus changing order
body: <p>For example we have a groupbox with some amount of lineEdits.<br>
  When user press Tab focus from one lineEdit changed to other.<br>
  How to make focus change in the specific order?<br>
  In my Dialog focus changed in a very strange way.<br> For example cursor jumps this way 1 3 2 4 lineEdits. I want to make it jumping 1 2 3 4 lineEdits<br>
  I think that the order is such because I added this line edits in such order...but remaking all GUI is not a solution for me...</p>