Where is isA_CFDictionary declared?

I'm trying to compile this C++ code in Xcode. And it can't seem to find the isA_CFDictionary.

I'm getting:

Use of undeclared identifier 'isA_CFDictionary'; did you mean '__CFDictionary'?

I have included:

#include <CoreFoundation/CoreFoundation.h>

I have also included "CoreFoundation.framework" in the Frameworks and Libraries in XCode.

But it didn't help.

What library is it defined in?

Where is isA_CFDictionary declared?
 
 
Q