Question

Hi I am using a 3rd party library in my iPhone application that uses C++ one of the methods i need to use returns a pointer to a pointer of a class. like follows.

DLL classAttributes** getAttributes();

I can successfully call the method and return the value into a pointer to a pointer like so;

classAttributes **attributes = cPPClass->getAttributes();

however i can’t seem to access any of the methods on the class for example i know that the class has a function called getName(); but when i try calling it i get errors.

attributes->getName(); 'Request for member 'getName' in *attributes'; which is of non-class type 'attributes*''

I did some googling and found some stuff that said to access a pointer pointer address use the format

&(*attributes)->getName(); 'invalid uses of incomplete type 'struct attributes'

Any help would be much appreciated.
Thanks.

Answer 1

'invalid uses of incomplete type 'struct attributes' indicates that you need to #include the header file for it. It’s only forward-declared at this point in your code.