How to make a QTreeWidget that looks like the WidgetBoxTreeWidget from the designer?

Question

I'd like a toolbox thing sort of like the widget tree in the designer. As far as I can tell, for the categories it simply adds a top level tree item to itself. Also afaict, it is a basic subclass of QTreeWidget, so I should be able to see what it's doing and make the same calls on a QTreeWidget to get the same behavior.

I can't seem recreate the way the categories draw themselves in the designer though. I'm missing something. How is this done?

Answer 1

You'll want to look at Qt's View Delegates. These allow you to change how things are drawn in their item view classes.