// class definition
template<
  typename TRootCreator, 
  typename TInterface=CComQIPtr<IUnknown, &IID_IUnknown> >
    class CGenericNode : public CDelegationBase
{
  // ctor omitted
protected:
  TInterface* OCX() { return m_pOCX; }
private:
  TInterface* m_pOCX;
};

class CArchiveMailInNode : 
  public CRootCreator, 
  public CGenericNode<CArchiveMailInNode, CComQIPtr<ILeonFLC, &IID_ILeonFLC> >
{
public:
  CArchiveMailInNode() : CRootCreator(), 
    CGenericNode<CArchiveMailInNode, CComQIPtr<ILeonFLC, &IID_ILeonFLC> >(MAKEINTRESOURCE(IDS_NODE_ARCHIVE_MAIL_IN), _T("{4003C10B-2DDC-4e76-8A8B-C3F717BEF467}"))
	{
	}
	
	void InitOCX()
	{
		OCX()->[member list here]
	}
};