76 lines
2 KiB
C++
76 lines
2 KiB
C++
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//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1992.
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//
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// File: ilbmem.hxx
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//
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// Contents: ILockBytes memory implementation
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//
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// Classes: CMapBytes
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//
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// History: 30-Oct-92 AlexT Created
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//
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//--------------------------------------------------------------------------
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#ifndef __ILB_HXX__
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//#include <dfmsp.hxx> // Pick up UL64 support
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#define ULISetLow(li, v) ((li).LowPart = (v))
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#define ULISetHigh(li, v) ((li).HighPart = (v))
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#define ULIGetLow(li) ((li).LowPart)
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#define ULIGetHigh(li) ((li).HighPart)
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#define AtomicInc(lp) InterlockedIncrement(lp)
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#define AtomicDec(lp) InterlockedDecrement(lp)
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#if DBG == 1
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DECLARE_DEBUG(ol);
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#define olDebugOut(parms) olInlineDebugOut parms
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#define olAssert(exp) Win4Assert(exp)
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#else // DBG != 1
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#define olDebugOut(parms)
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#define olAssert(exp)
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#endif // DBG == 1
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class CMapBytes : public ILockBytes
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{
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public:
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CMapBytes(void);
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STDMETHOD(QueryInterface) (REFIID riid, LPVOID FAR* ppvObj);
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STDMETHOD_(ULONG,AddRef) (void);
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STDMETHOD_(ULONG,Release) (void);
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STDMETHOD(ReadAt) (ULARGE_INTEGER ulOffset,
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VOID HUGEP *pv,
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ULONG cb,
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ULONG FAR *pcbRead);
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STDMETHOD(WriteAt) (ULARGE_INTEGER ulOffset,
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VOID const HUGEP *pv,
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ULONG cb,
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ULONG FAR *pcbWritten);
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STDMETHOD(Flush) (void);
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STDMETHOD(GetSize) (ULARGE_INTEGER FAR *pcb);
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STDMETHOD(SetSize) (ULARGE_INTEGER cb);
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STDMETHOD(LockRegion) (ULARGE_INTEGER libOffset,
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ULARGE_INTEGER cb,
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DWORD dwLockType);
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STDMETHOD(UnlockRegion) (ULARGE_INTEGER libOffset,
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ULARGE_INTEGER cb,
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DWORD dwLockType);
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STDMETHOD(Stat) (STATSTG FAR *pstatstg, DWORD grfStatFlag);
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private:
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LONG _ulRef; // reference count
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ULONG _ulSize; // memory map size
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void FAR *_pv; // memory map
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};
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#endif // #ifndef __ILB_HXX__
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