50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
//---------------------------------------------------------------------------
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// ColumnUpdate.h : CVDColumnUpdate 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 __CVDCOLUMNUPDATE__
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#define __CVDCOLUMNUPDATE__
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class CVDColumnUpdate
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{
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protected:
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// Construction/Destruction
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CVDColumnUpdate();
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virtual ~CVDColumnUpdate();
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// Helper function
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static HRESULT ExtractVariant(CURSOR_DBBINDPARAMS * pBindParams, CURSOR_DBVARIANT * pVariant);
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public:
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static HRESULT Create(CVDRowsetColumn * pColumn, CURSOR_DBBINDPARAMS * pBindParams,
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CVDColumnUpdate ** ppColumnUpdate, CVDResourceDLL * pResourceDLL);
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// Reference count
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ULONG AddRef();
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ULONG Release();
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// Access functions
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CVDRowsetColumn * GetColumn() const {return m_pColumn;}
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CURSOR_DBVARIANT GetVariant() const {return m_variant;}
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VARTYPE GetVariantType() const {return m_variant.vt;}
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ULONG GetVarDataLen() const {return m_cbVarDataLen;}
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DWORD GetInfo() const {return m_dwInfo;}
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protected:
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// Data members
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DWORD m_dwRefCount; // reference count
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CVDRowsetColumn * m_pColumn; // rowset column pointer
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CURSOR_DBVARIANT m_variant; // update variant
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ULONG m_cbVarDataLen; // variable data length
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DWORD m_dwInfo; // information field
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CVDResourceDLL * m_pResourceDLL; // pointer which keeps track of resource DLL
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};
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#endif //__CVDCOLUMNUPDATE__
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