KOALA.H

/* 
 * KOALA.H 
 * Koala Object with Custom Interface, Chapter 6 
 * 
 * Classes that implement the CKoala object with a custom interface 
 * to demonstrate local/remote transparency. 
 * 
 * Copyright (c)1993-1995 Microsoft Corporation, All Right Reserved 
 * 
 * Kraig Brockschmidt, Microsoft 
 * Internet  :  kraigb@microsoft.com 
 * Compuserve:  >INTERNET:kraigb@microsoft.com 
 */ 
 
 
#ifndef _KOALA_H_ 
#define _KOALA_H_ 
 
#define CHAPTER6 
#include <inole.h> 
#include <ianimal.h> 
#include <ikoala.h> 
 
//KOALA.CPP 
 
//CHAPTER6MOD 
class CImpIAnimal; 
typedef CImpIAnimal *PCImpIAnimal; 
 
class CImpIKoala; 
typedef CImpIKoala *PCImpIKoala; 
//End CHAPTER6MOD 
 
class CKoala : public IUnknown 
    { 
    //CHAPTER6MOD 
    friend class CImpIAnimal; 
    friend class CImpIKoala; 
    //End CHAPTER6MOD 
 
    protected: 
        ULONG           m_cRef;         //Object reference count 
        LPUNKNOWN       m_pUnkOuter;    //Controlling unknown 
 
        PFNDESTROYED    m_pfnDestroy;   //To call on closure 
 
        //CHAPTER6MOD 
        PCImpIAnimal    m_pImpIAnimal;  //Our interfaces 
        PCImpIKoala     m_pImpIKoala; 
 
        BOOL            m_fJustAte; 
        short           m_cSleepAfterEat; 
        //CHAPTER6MOD 
 
    public: 
        CKoala(LPUNKNOWN, PFNDESTROYED); 
        ~CKoala(void); 
 
        BOOL Init(void); 
 
        //Non-delegating object IUnknown 
        STDMETHODIMP         QueryInterface(REFIID, PPVOID); 
        STDMETHODIMP_(ULONG) AddRef(void); 
        STDMETHODIMP_(ULONG) Release(void); 
    }; 
 
typedef CKoala *PCKoala; 
 
 
//CHAPTER6MOD 
//IAnimal interface implementation 
 
class CImpIAnimal : public IAnimal 
    { 
    protected: 
        ULONG           m_cRef;      //Interface reference count 
        PCKoala         m_pObj;      //Back pointer to the object 
        LPUNKNOWN       m_pUnkOuter; //For delegation 
 
    public: 
        CImpIAnimal(PCKoala, LPUNKNOWN); 
        ~CImpIAnimal(void); 
 
        //IUnknown members 
        STDMETHODIMP QueryInterface(REFIID, LPVOID *); 
        STDMETHODIMP_(ULONG) AddRef(void); 
        STDMETHODIMP_(ULONG) Release(void); 
 
        //IAnimal members 
        STDMETHODIMP Eat(LPTSTR, LPTSTR, short); 
        STDMETHODIMP Sleep(short *); 
        STDMETHODIMP Procreate(short *); 
        STDMETHODIMP WhatKindOfAnimal(IID *); 
    }; 
 
 
//IKoala interface implementation 
 
class CImpIKoala : public IKoala 
    { 
    protected: 
        ULONG           m_cRef;      //Interface reference count 
        PCKoala         m_pObj;      //Back pointer to the object 
        LPUNKNOWN       m_pUnkOuter; //For delegation 
 
    public: 
        CImpIKoala(PCKoala, LPUNKNOWN); 
        ~CImpIKoala(void); 
 
        //IUnknown members 
        STDMETHODIMP QueryInterface(REFIID, LPVOID *); 
        STDMETHODIMP_(ULONG) AddRef(void); 
        STDMETHODIMP_(ULONG) Release(void); 
 
        //IKoala members 
        STDMETHODIMP ClimbEucalyptusTree(short); 
        STDMETHODIMP PouchOpensDown(void); 
        STDMETHODIMP SleepAfterEating(short); 
    }; 
//End CHAPTER6MOD 
 
#endif //_KOALA_H_