ILOCKBYT.H

/* 
 * ILOCKBYT.H 
 * 
 * Definitions of a template ILockBytes interface 
 * implementation. 
 * 
 * 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 _ILOCKBYT_H_ 
#define _ILOCKBYT_H_ 
 
class CImpILockBytes; 
typedef class CImpILockBytes *PIMPILOCKBYTES; 
 
class CImpILockBytes : public ILockBytes 
    { 
    protected: 
        ULONG           m_cRef;      //Interface reference count 
        LPVOID          m_pObj;      //Back pointer to the object 
        LPUNKNOWN       m_pUnkOuter; //Fr delegation 
 
    public: 
        CImpILockBytes(LPVOID, LPUNKNOWN); 
        ~CImpILockBytes(void); 
 
        STDMETHODIMP QueryInterface(REFIID, LPVOID *); 
        STDMETHODIMP_(ULONG) AddRef(void); 
        STDMETHODIMP_(ULONG) Release(void); 
 
        STDMETHODIMP ReadAt(ULARGE_INTEGER, VOID HUGEP *, ULONG 
            , ULONG *); 
        STDMETHODIMP WriteAt(ULARGE_INTEGER, VOID const HUGEP * 
            , ULONG, ULONG *); 
        STDMETHODIMP Flush(void); 
        STDMETHODIMP SetSize(ULARGE_INTEGER); 
        STDMETHODIMP LockRegion(ULARGE_INTEGER, ULARGE_INTEGER 
            , DWORD); 
        STDMETHODIMP UnlockRegion(ULARGE_INTEGER, ULARGE_INTEGER 
            , DWORD); 
        STDMETHODIMP Stat(LPSTATSTG, DWORD); 
    }; 
 
 
#endif //_ILOCKBYT_H_