title: Initially hidden control in Qt Creator
body: <p>I want to make a group box shown only when a radio button is selected.<br>
  I managed to do that by connecting the <code>toggled(bool)</code> signal of the radio button to the <code>setShown(bool)</code> slot of the group box.<br>
  The problem is that the radio button is initially deselected but the group box is initially shown so I have to select/deselect the radio button to make it disappear.<br>
  Is there any way I can make the group box initially invisible in Qt Creator Designer without having to do it in code?</p>