title: QScrollarea with pictures not scolling
body: <p>I want to display a film strip of pictures in my GUI. If a small number of pictures they should just show them side by side. If the amount increases it should allow scrolling to the right to reveal other pictures.</p>
  <p>I am working inQT designer at the moment to understand the concept. Later I want to generate the code in Python &quot;on the fly&quot; (as pictures/widgets may be added based on user behavior). And I'm using pyqt5</p>
  <p>I followed <a href="https://stackoverflow.com/a/26235165/10809153">another Stackoverflow question's response</a> and have set up my scroll area, the horizontal layout, and a bunch of buttons that will make the horizontal layout bigger than the scroll area. The buttons would later be replaced with pixmaps once the basic functionality is given.
  I did expect this generates the scrollbar behavior but it does not. I can force to show the horizontal scrollbar to show but it does not let me scroll.</p>
  <p>I tried to look up all the settings for the Scrollarea but nothing (obvious to me) is blocking the scroll bar behavior.</p>
  <p>Any clues where I got it wrong?</p>
  <p><a href="https://i.stack.imgur.com/AyKM9.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/AyKM9.png" alt="Missing Scrollbar functionality, even with scrollbars always showing" /></a></p>
  <p><a href="https://i.stack.imgur.com/DT5e2.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/DT5e2.png" alt="Widgets as per Object Inspector" /></a></p>