Qt doesn't use native controls, they're lookalike.
The point of the comment asking about Qt is most likely that Qt is not heavyweight (it does a great job even on embedded.), therefore pointing out that there is a difference between Qt and the other you mentioned.
I'm not a fan of OOP and I think there are more interesting framework model - but Qt is definitely the best and most efficient GUI framework I've had the pleasure to work with.
The point of the comment asking about Qt is most likely that Qt is not heavyweight (it does a great job even on embedded.), therefore pointing out that there is a difference between Qt and the other you mentioned.
I'm not a fan of OOP and I think there are more interesting framework model - but Qt is definitely the best and most efficient GUI framework I've had the pleasure to work with.