47 lines
1.5 KiB
C++
47 lines
1.5 KiB
C++
//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1995.
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//
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// File: FILELB.HXX
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//
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// Contents:
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//
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// Classes: Declaration for FileLockBytes class, which derives
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// from the CLockBytes class.
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//
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// Functions:
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//
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// History: 12-13-95 JoeS (Joe Souza) Created
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//
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//----------------------------------------------------------------------------
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class FAR FileLockBytes : public CLockBytes
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{
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public:
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FileLockBytes(HANDLE filehandle);
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// *** IUnknown methods ***
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STDMETHOD_(ULONG,Release) (THIS);
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// *** ILockBytes methods ***
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STDMETHOD(ReadAt) (THIS_ ULARGE_INTEGER ulOffset, VOID HUGEP *pv,
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ULONG cb, ULONG FAR *pcbRead);
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STDMETHOD(WriteAt) (THIS_ ULARGE_INTEGER ulOffset, VOID const HUGEP *pv,
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ULONG cb, ULONG FAR *pcbWritten);
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STDMETHOD(Flush) (THIS);
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STDMETHOD(SetSize) (THIS_ ULARGE_INTEGER cb);
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STDMETHOD(LockRegion) (THIS_ ULARGE_INTEGER libOffset, ULARGE_INTEGER cb,
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DWORD dwLockType);
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STDMETHOD(UnlockRegion) (THIS_ ULARGE_INTEGER libOffset,
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ULARGE_INTEGER cb, DWORD dwLockType);
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STDMETHOD(Stat) (THIS_ STATSTG FAR *pStatStg, DWORD grfStatFlag);
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private:
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HRESULT seekfile(ULARGE_INTEGER offset);
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HANDLE _hFileHandle;
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CRefCount _CRefs;
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};
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