title: Layout items on QToolBox page to expand with page
body: <p>In Qt Designer, how do you lay out the items on the pages of a QToolBox so that they expand with the toolbox? I have tried adding a table-view widget on a QToolBox page. Please see image:</p>
  
  <p><a href="https://i.stack.imgur.com/Qkz5h.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Qkz5h.png" alt="enter image description here"></a></p>
  
  <p>But when the QToolBox is expanded along with my application main window, the table-view does not expand with the toolbox page.</p>
  
  <p>Is there something I am missing ? </p>