rncbc.org a.k.a. Rui Nuno Capela

It all depends on what you're looking at.

In fact, I try to use the native Qt framework whenever it fits to purpose. When that is not obvious, for any or some perceivable reason (eg. performance), I'll tend to do it all in the old-school way and fallback to craft my own custom widgets and specialties. However, I try most of the cases staying with the Qt barebones. No fancy skinning, nor fatty eye-candies ;) Native as you say.

So, what specific function are you looking at? It might just happen it's actually Qt-all-over, just don't seem to. By rule, if you can see it, it is Qt, more or less, but Qt :)

OTOH, as you mentioned it, my mp3 file handling resorts to the MAD audio decoder library, with some extra refactoring involved though.

Cheers.