64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
//---------------------------------------------------------------------------
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// CMSR2C.h : CVDCursorFromRowset header file
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//
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// Copyright (c) 1996 Microsoft Corporation, All Rights Reserved
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// Developed by Sheridan Software Systems, Inc.
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//---------------------------------------------------------------------------
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#ifndef _CMSR2C_H_
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#define _CMSR2C_H_
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class CVDCursorFromRowset : public ICursorFromRowset,
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public ICursorFromRowPosition
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{
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public:
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static HRESULT CreateInstance(LPUNKNOWN pUnkOuter, REFIID riid, LPVOID * ppvObj);
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protected:
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// construction/destruction
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CVDCursorFromRowset(LPUNKNOWN pUnkOuter);
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~CVDCursorFromRowset();
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// data members
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LPUNKNOWN m_pUnkOuter; // pointer to controlling unknown
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public:
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// IUnknown methods
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STDMETHOD(QueryInterface)(THIS_ REFIID riid, LPVOID FAR *ppvObj);
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STDMETHOD_(ULONG,AddRef)(THIS);
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STDMETHOD_(ULONG,Release)(THIS);
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// ICursorFromRowset method
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STDMETHOD(GetCursor)(THIS_ IRowset *pRowset, ICursor **ppCursor, LCID lcid);
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// ICursorFromRowPosition method
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STDMETHOD(GetCursor)(THIS_ IRowPosition *pRowPosition, ICursor **ppCursor, LCID lcid);
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private:
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// the inner, private unknown implementation is for the aggregator
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// to control the lifetime of this object
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//
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class CPrivateUnknownObject : public IUnknown {
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public:
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STDMETHOD(QueryInterface)(REFIID riid, void **ppvObjOut);
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STDMETHOD_(ULONG, AddRef)(void);
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STDMETHOD_(ULONG, Release)(void);
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// constructor is remarkably trivial
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//
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CPrivateUnknownObject() : m_cRef(0) {}
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private:
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CVDCursorFromRowset *m_pMainUnknown();
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ULONG m_cRef;
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} m_UnkPrivate;
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friend class CPrivateUnknownObject;
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};
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typedef CVDCursorFromRowset* PCVDCursorFromRowset;
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#endif //_CMSR2C_H_
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/////////////////////////////////////////////////////////////////////////////
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