title: Qt designer - how to create QDialog?
body: <p>It is possibility to create QDialog in Qt-creator like for example QForm (by clicking)? I've found several samples, but QDialog is created programmatically.
  I want to drag and drop buttons, listview and others components on QDialog.
  Now I can add new components only by modifying code.</p>
  
  <p>Thanks </p>