title: How to add a file selection dialog using QT Createor?
body: <p>As an old Borland C++ Bulder coder who has moved to Linux, I was very pleased to find QT and QT Creator.</p>
  
  <p>But I have fallen at the first hurdle: I have designed a form, with some controls, and added a menu. Now, when the user selects menu File/Open, I would like to display a file selection dialog- and I can't see how.</p>
  
  <p>It's obviously a simple problem, so if someone could point me right, I would be grateful.</p>