Using C++ classes from Objective C

FROM : Jeremy
DATE : Wed Mar 19 21:12:16 2008

Hi.

I am just starting to learn Cocoa and would like to use standard C++ 
classes from my Objective C/C++ classes.
Is there any known documentation on how to do this, or does anyone 
have any pointers?

I tried creating a new object of my C++ class and calling a method on 
it in a .m file and received a bunch of errors (including new not 
being found).

I then changed my .m file to a .mm file and all of the errors went 
away except for one:
"cannot find interface declaration for 'MyClass'"

The code in my .mm file is as such:

m_pMemberVariable = new MyClass();
const unsigned int nRes = m_pMemberVariable->MyFunc();

The second line gets the error. The new allocation in the first line 
seems to compile fine.

Do I need to create some sort of bridge class or method?

Thanks,
Jeremy