165 lines
4.5 KiB
C
165 lines
4.5 KiB
C
//--vsop.h-----------------------------------------------------------------
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//
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// Header file for the property stream wrapper class.
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//
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// Copyright (C) Microsoft Corp., 1986-1996. All rights reserved.
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//
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//-----------------------------------------------------------------------------
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#ifndef _VSOP_H
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#pragma option push -b -a8 -pc -A- /*P_O_Push*/
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#define _VSOP_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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//$--IEDKVirtualStreamOnProperty---------------------------------------------------------
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//
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// Buffers access to a property stream
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//
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//----------------------------------------------------------------------------
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#undef INTERFACE
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#define INTERFACE IEDKVirtualStreamOnProperty
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DECLARE_INTERFACE_(IEDKVirtualStreamOnProperty, IUnknown)
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{
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// Notes: Order IS important. The IEDKVirtualStreamOnProperty interface
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// must have the same vtable order as the IStream interface.
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//
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// The Read(), Write(), CopyTo() and Commit() methods will return
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// MAPI_E_* error codes if an attempt to access the underlying property
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// fails. Otherwise, the IStream methods will return IStream STG_E_* errors.
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#ifndef NO_BASEINTERFACE_FUNCS
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/* IUnknown methods */
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STDMETHOD(QueryInterface)(
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THIS_
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REFIID riid,
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LPVOID * ppvObj
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) PURE;
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STDMETHOD_(ULONG, AddRef)(
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THIS
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) PURE;
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STDMETHOD_(ULONG, Release)(
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THIS
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) PURE;
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#endif
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// IEDKVirtualStreamOnProperty methods (same as IStream methods)
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STDMETHOD(Read)(
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THIS_
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IN LPVOID pv, // output buffer pointer
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IN ULONG cb, // maximum # of bytes to read
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OUT ULONG * pcb // # of bytes read
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) PURE;
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STDMETHOD(Write)(
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THIS_
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IN VOID const * pv, // data to write
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IN ULONG cb, // # bytes to write
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OUT ULONG *pcb // # bytes written
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) PURE;
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STDMETHOD(Seek)(
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THIS_
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IN LARGE_INTEGER cbOffset, // byte offset
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IN DWORD dwOrigin, // origin
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OUT ULARGE_INTEGER * pcbPos // new position
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) PURE;
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STDMETHOD(SetSize)(
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THIS_
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IN ULARGE_INTEGER nSize // new size
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) PURE;
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STDMETHOD(CopyTo)(
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THIS_
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IN LPSTREAM pStrm, // destination stream pointer
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IN ULARGE_INTEGER cb, // # bytes to copy
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OUT ULARGE_INTEGER * pcbRead, // # bytes read
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OUT ULARGE_INTEGER * pcbWritten // # bytes written
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) PURE;
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STDMETHOD(Commit)(
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THIS_
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IN DWORD dwFlags // flags
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) PURE;
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STDMETHOD(Revert)(
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THIS
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) PURE;
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STDMETHOD(LockRegion)(
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THIS_
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IN ULARGE_INTEGER cbOffset, // offset
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IN ULARGE_INTEGER cbLength, // length
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IN DWORD dwFlags // flags
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) PURE;
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STDMETHOD(UnlockRegion)(
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THIS_
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IN ULARGE_INTEGER cbOffset, // offset
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IN ULARGE_INTEGER cbLength, // length
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IN DWORD dwFlags // flags
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) PURE;
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STDMETHOD(Stat)(
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THIS_
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OUT STATSTG * pStatStg, // stream statistic pointer
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IN DWORD dwFlags // flags
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) PURE;
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STDMETHOD(Clone)(
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THIS_
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OUT LPSTREAM * ppStrm // pointer to new stream
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) PURE;
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};
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//$--PVIRTUALSTREAMONPROPERTY-----------------------------------------------------------
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//
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// Pointer to IEDKVirtualStreamOnProperty interface.
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//
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//----------------------------------------------------------------------------
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typedef IEDKVirtualStreamOnProperty * PVIRTUALSTREAMONPROPERTY;
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//$--HrOpenVirtualStreamOnProperty------------------------------------------
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//
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// DESCRIPTION:
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// API to open a buffered stream on a binary or string property
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// Callable from "C" or "C++"
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//
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// INPUT: pPropObject -- MAPI property object pointer
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// ulPropTag -- property tag to open stream on
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// ulFlags -- MAPI property flags (MAPI_MODIFY, MAPI_CREATE)
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//
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// OUTPUT: ppVirtualStreamOnProperty -- pointer to buffered stream on property
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//
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// RETURNS: HRESULT -- NOERROR if successful,
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// E_INVALIDARG if bad input,
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// E_OUTOFMEMORY if memory problems,
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// E_FAIL otherwise
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//
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//-----------------------------------------------------------------------------
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STDAPI HrOpenVirtualStreamOnProperty(
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IN LPMAPIPROP pPropObject, // MAPI property object pointer
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IN ULONG ulPropTag, // property tag to open virtual stream on
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IN ULONG ulFlags, // MAPI property flags
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OUT PVIRTUALSTREAMONPROPERTY * ppVirtualStreamOnProperty); // pointer buffered stream
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#ifdef __cplusplus
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}
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#endif
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#pragma option pop /*P_O_Pop*/
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#endif
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