KOALAC.H

/* 
 * KOALAC.H 
 * 
 * Definition of the Koala object using containment, Chapter 2 
 * Included only from KOALAC.CPP. 
 * 
 * Copyright (c)1993-1995 Microsoft Corporation, All Rights Reserved 
 * 
 * Kraig Brockschmidt, Microsoft 
 * Internet  :  kraigb@microsoft.com 
 * Compuserve:  >INTERNET:kraigb@microsoft.com 
 */ 
 
 
#ifndef _KOALAC_H_ 
#define _KOALAC_H_ 
 
class CImpIAnimal_K; 
typedef CImpIAnimal_K *PCImpIAnimal_K; 
 
class CImpIKoala_C; 
typedef CImpIKoala_C *PCImpIKoala_C; 
 
class CKoalaC : public IUnknown 
    { 
    friend CImpIAnimal_K; 
    friend CImpIKoala_C; 
 
    private: 
        DWORD           m_cRef;         //Object reference count 
 
        PCImpIAnimal_K  m_pImpIAnimal;  //Interface implementation 
        PCImpIKoala_C   m_pImpIKoala;   //Interface implementation 
 
        IAnimal        *m_pIAnimal;     //From Animal 
 
    public: 
        CKoalaC(void); 
        ~CKoalaC(void); 
 
        BOOL Init(void); 
 
        //IUnknown members, non-delegating 
        STDMETHODIMP         QueryInterface(REFIID, PPVOID); 
        STDMETHODIMP_(DWORD) AddRef(void); 
        STDMETHODIMP_(DWORD) Release(void); 
    }; 
 
 
typedef CKoalaC *PCKoalaC; 
 
 
class CImpIAnimal_K : public IAnimal 
    { 
    private: 
        DWORD       m_cRef;         //For debugging 
        PCKoalaC    m_pObj;         //Back pointer 
 
    public: 
        CImpIAnimal_K(PCKoalaC); 
        ~CImpIAnimal_K(void); 
 
        //IUnknown members 
        STDMETHODIMP         QueryInterface(REFIID, PPVOID); 
        STDMETHODIMP_(DWORD) AddRef(void); 
        STDMETHODIMP_(DWORD) Release(void); 
 
        //IAnimal members 
        STDMETHODIMP Eat(void); 
        STDMETHODIMP Sleep(void); 
        STDMETHODIMP Procreate(void); 
    }; 
 
 
class CImpIKoala_C : public IKoala 
    { 
    private: 
        DWORD       m_cRef;         //For debugging 
        PCKoalaC    m_pObj;         //Back pointer 
 
    public: 
        CImpIKoala_C(PCKoalaC); 
        ~CImpIKoala_C(void); 
 
        //IUnknown members 
        STDMETHODIMP         QueryInterface(REFIID, PPVOID); 
        STDMETHODIMP_(DWORD) AddRef(void); 
        STDMETHODIMP_(DWORD) Release(void); 
 
        //IKoala members 
        STDMETHODIMP ClimbEucalyptusTrees(void); 
        STDMETHODIMP PouchOpensDown(void); 
        STDMETHODIMP SleepForHoursAfterEating(void); 
    }; 
 
 
#endif _KOALAC_H_