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86 lines
1.7 KiB
86 lines
1.7 KiB
// Query.cpp: implementation of the CQuery class.
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//
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// Copyright (c) 1997-2001 Microsoft Corporation, All Rights Reserved
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//
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//////////////////////////////////////////////////////////////////////
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#include "precomp.h"
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#include "ExtendQuery.h"
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/////////////////////////////////////////////////////////////////////////////////////////
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// query implementation
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/////////////////////////////////////////////////////////////////////////////////////////
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Query::Query ( DWORD dwSize ) : CStringExt ( dwSize )
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{
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}
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Query::Query ( LPCTSTR wsz ) : CStringExt ( wsz )
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{
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}
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Query::~Query ()
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{
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}
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/////////////////////////////////////////////////////////////////////////////////////////
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// query extend implementation
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/////////////////////////////////////////////////////////////////////////////////////////
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QueryExt::QueryExt ( LPCTSTR wsz, DWORD dwSize ) : CStringExt ( dwSize ),
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m_dwSizeConstant ( 0 ),
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m_wszStringConstant ( NULL )
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{
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if ( wsz )
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{
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try
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{
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DWORD dw = 0L;
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dw = lstrlen ( wsz );
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if SUCCEEDED ( Append ( 1, wsz ) )
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{
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m_dwSizeConstant = dw;
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m_wszStringConstant = wsz;
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}
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else
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{
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throw CHeap_Exception(CHeap_Exception::E_ALLOCATION_ERROR);
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}
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}
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catch ( ... )
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{
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m_dwSizeConstant = 0L;
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m_wszStringConstant = NULL;
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throw;
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}
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}
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}
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QueryExt::~QueryExt ()
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{
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m_dwSizeConstant = 0L;
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m_wszStringConstant = NULL;
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}
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HRESULT QueryExt::Append ( DWORD dwCount, ... )
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{
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HRESULT hr = E_FAIL;
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if ( dwCount )
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{
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va_list argList;
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va_start ( argList, dwCount );
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hr = AppendList ( m_dwSizeConstant, m_wszStringConstant, dwCount, argList );
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va_end ( argList );
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}
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else
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{
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hr = S_FALSE;
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}
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return hr;
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}
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