How to construct an iterator

An iterator allows you to access each element of the list in turn.

To create an iterator for a singly linked list of CMyClass elements, defined as:

      
       
      
      class CMyClass : public CBase
    {
    ...
    TSglQueLink iSlink;
    ...
    };
     

first construct a Header :

      
       
      
      TSglQue<CMyClass> queHeader(_FOFF(CMyClass,iSlink));
     

and then construct the Iterator . The iterator requires the header at construction time but the list can be empty:

      
       
      
      TSglQueIter<CMyClass> queIter(queHeader);
     

The TSglQueIter class takes a class template parameter that defines the type of object which is to form an element of the list.