QScrollArea -- Scroll to widget problem

[qlands]

I'm replying to my post.

Indeed this happens because the scroll area's widget changes it geometry with every button that is added. Thus, ensureWidgetVisible cannot be called immediately because the scroll area does not know its final size yet. A way around is to subclass a QWidget and emit a signal after the widget size changes (by reimplementing the resizeEvent) + setting this widget as the scroll areas's widget. After connecting the signal, ensureWidgetVisible can properly scroll to the added widget.

[ratzian]

Hello I had the same problem and managed to fix it quite easy: Call qApp->processEvents(); before calling the ensureWidgetVisible() method.

The idea is that when the geometry changes, events for doing that are pushed on the event queue... So you execute the events to make the geometry changes and then you can ensure the widget is visible. Of course, these things are happening in the UI thread...

I hope this helps someone out there. Cheers!