I don't think that's possible. Code::Blocks writes wxWidgets code, which, on OSX is built on top of Carbon, not Cocoa. Even if it were Cocoa, it probably wouldn't be UIKit/CocoaTouch.
Even if they made a port that was written against UIKit, there might be an issue with the Terms of Service that says you can't use other frameworks. You are supposed to write in Obj-C/C/C++ against UIKit directly. They probably wouldn't have any idea, but who knows--seems like it's not worth it.
I am a former wx user and now iPhone developer. ObjC/CocoaTouch/Interface Builder is much nicer and worth learning if you want to make iPhone apps.
If you want multi-platform development, I'd watch out, because Apple seems to be specifically targeting it in their terms of service. For games, so far, it appears that Unity framework games are still being approved.