What is the main use of "Widget" component (on Containers) on QT Designer?

[ricardo]

Hi out there!

What is the main use of "Widget" component (on Containers) on QT Designer?

Can I use that to put an opengl widget over it?

Thanks a lot.

[Lykurg]

Well, the main use is probably that you can promote it to your own class, which is QWidget based.

[Boron]

Or you could fill this widget with other widgets at runtime. The widget you "design" is just a place holder.