class-dump for iPhone SDK header file

http://iphone.freecoder.org/classdump_en.html

with this wonderful tool, you don't need to worry about header files problem any more
e.g.
put the class-dump binary (Mac OS X) in your bin and do this

class-dump -H /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/Frameworks/UIKit.framework/UIKit

you will get the most updated header files in your current directory from the SDK