Hi. I've been using C++ for awhile. And I just got a new Mac. I know Xcode is very nice but I still prefer C++ to Cocoa and Carbon. So I was wondering are there any good C++ GUIs for a mac?
But do you know if Qt would be good?
elppa's suggestion is really the right one. If you intend to write applications on MacOS X that are even close to feeling like MacOS X applications then you need to code the GUI's with the AppKit (Cocoa) Framework. Anything else is going to feel alien, and MacOS X users are sensitive to that[1].
You can still build all of of your logic in C++, but you need to have clean separation of your program logic and the presentation system. If you are doing it right you already have this, and this division should be easy.
My interpretation of Supershane457's objections boil down to his/her being used to one way of doing things (some C++ library) and reacting negatively to a new way doing things (AppKit/Cocoa). If you are going to work on MacOS X, then you are going to have to get used to the way of doing things here. Swimming up-stream is not going to be very productive.
[1] They are not the only ones, look at the gnashing of teeth on Windows over iTunes and QuickTime which feel non-native there.
Of course there are people paid to work on (Qt). And it works well.
It's unfortunate that Apple has given up on Carbon.