86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
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///////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 1997, Microsoft Corp. All rights reserved.
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//
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// FILE
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//
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// PropSet.h
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//
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// SYNOPSIS
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//
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// This file describes the class DBPropertySet.
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//
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// MODIFICATION HISTORY
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//
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// 10/30/1997 Original version.
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//
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _PROPSET_H_
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#define _PROPSET_H_
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///////////////////////////////////////////////////////////////////////////////
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//
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// CLASS
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//
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// DBPropertySet<N>
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//
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// DESCRIPTION
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//
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// This class provides a very basic wrapper around an OLE DB property set.
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// The template parameter 'N' specifies the capacity of the set.
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//
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///////////////////////////////////////////////////////////////////////////////
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template <size_t N>
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struct DBPropertySet : DBPROPSET
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{
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DBPropertySet(const GUID& guid)
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{
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guidPropertySet = guid;
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cProperties = 0;
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rgProperties = DBProperty;
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}
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~DBPropertySet()
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{
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for (size_t i = 0; i<cProperties; i++)
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VariantClear(&DBProperty[i].vValue);
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}
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bool AddProperty(DWORD dwPropertyID, LPCWSTR szValue)
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{
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if (cProperties >= N) return false;
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DBProperty[cProperties].dwPropertyID = dwPropertyID;
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DBProperty[cProperties].dwOptions = DBPROPOPTIONS_REQUIRED;
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DBProperty[cProperties].colid = DB_NULLID;
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DBProperty[cProperties].vValue.vt = VT_BSTR;
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DBProperty[cProperties].vValue.bstrVal = SysAllocString(szValue);
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if (DBProperty[cProperties].vValue.bstrVal == NULL) return false;
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cProperties++;
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return true;
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}
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bool AddProperty(DWORD dwPropertyID, long lValue)
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{
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if (cProperties >= N) return false;
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DBProperty[cProperties].dwPropertyID = dwPropertyID;
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DBProperty[cProperties].dwOptions = DBPROPOPTIONS_REQUIRED;
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DBProperty[cProperties].colid = DB_NULLID;
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DBProperty[cProperties].vValue.vt = VT_I4;
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DBProperty[cProperties].vValue.lVal = lValue;
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cProperties++;
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return true;
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}
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DBPROP DBProperty[N];
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};
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#endif // _PROPSET_H_
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