IPERSTOR.H

/* 
 * IPERSTOR.H 
 * 
 * Definitions of a template IPersistStorage interface 
 * implementation.  Note that this template includes 
 * state flags used in the implementation to track the 
 * scribble, no scribble, and hands-off states. 
 * 
 * Copyright (c)1993-1996 Microsoft Corporation, All Rights Reserved 
 * 
 * Kraig Brockschmidt, Software Design Engineer 
 * Microsoft Systems Developer Relations 
 * 
 * Internet  :  kraigb@microsoft.com 
 * Compuserve:  >INTERNET:kraigb@microsoft.com 
 */ 
 
 
#ifndef _IPERSTOR_H_ 
#define _IPERSTOR_H_ 
 
//State Flags 
typedef enum 
    { 
    PSSTATE_UNINIT,     //Uninitialized 
    PSSTATE_SCRIBBLE,   //Scribble 
    PSSTATE_ZOMBIE,     //No scribble 
    PSSTATE_HANDSOFF    //Hand-off 
    } PSSTATE; 
 
 
 
class CImpIPersistStorage; 
typedef class CImpIPersistStorage *PIMPIPERSISTSTORAGE; 
 
class CImpIPersistStorage : public IPersistStorage 
    { 
    protected: 
        ULONG           m_cRef;      //Interface reference count 
        LPVOID          m_pObj;      //Back pointer to the object 
        LPUNKNOWN       m_pUnkOuter; //For delegation 
        PSSTATE         psState;     //Current State 
 
 
    public: 
        CImpIPersistStorage(LPVOID, LPUNKNOWN); 
        ~CImpIPersistStorage(void); 
 
        STDMETHODIMP QueryInterface(REFIID, LPVOID *); 
        STDMETHODIMP_(ULONG) AddRef(void); 
        STDMETHODIMP_(ULONG) Release(void); 
 
        STDMETHODIMP GetClassID(LPCLSID); 
 
        STDMETHODIMP IsDirty(void); 
        STDMETHODIMP InitNew(LPSTORAGE); 
        STDMETHODIMP Load(LPSTORAGE); 
        STDMETHODIMP Save(LPSTORAGE, BOOL); 
        STDMETHODIMP SaveCompleted(LPSTORAGE); 
        STDMETHODIMP HandsOffStorage(void); 
    }; 
 
 
#endif  //_IPERSTOR_H_