ipersistfile.cpp

此为Insight opc client InfoServerExplorer源程序

/////////////////////////////////////////////////////////////////////////////
//
//  OPC Data Access VC++ Client:	IPersistFile.CPP
//									(Source File)
//
/////////////////////////////////////////////////////////////////////////////
//
//          Author: Raphael Imhof
//    Initial Date: 11/04/98
//       $Workfile: IPersistFile.cpp $
//       $Revision: 1 $
//           $Date: 7/27/99 5:23p $
//   Target System: Microsoft Windows NT 4.0
//     Environment: Visual C++ 5.0 / OPC DataAccess 1.0/2.0
//         Remarks: 
//
/////////////////////////////////////////////////////////////////////////////
//
//     Description: implementation of the CIPersistFile class.
//					IPersistFile wrapper.
//					
//
/////////////////////////////////////////////////////////////////////////////
//
//  History of Changes     (Please remove very old comments and blank lines!)
//            $Log: /IDK/OPCServer/clients/VC++/InfoServerExplorer/IPersistFile.cpp $
// 
// 1     7/27/99 5:23p Imhof
// 
// 1     7/27/99 5:19p Imhof
// 
// 4     1/15/99 6:43p Imhof
// Updated legal notice.
// 
// 3     11/25/98 3:00p Betrisey
// Added menu item <OPC> <Print Statistic to log file>
// All the InfoServer statistic counters are printed out to the log file.
// Note that we do "misuse" the IPersist::Save() API to do that. This API
// returns "not implemented".
// 
// 2     11/10/98 2:20p Imhof
// Added file header's.
// 
//  $Nokeywords:$ (To avoid useless search while checking in.)
/////////////////////////////////////////////////////////////////////////////
//  Copyright (C) 1998, Siemens Building Technologies, Inc. Landis Division
//
// SIEMENS BUILDING TECHNOLOGIES, INC. IS PROVIDING THE FOLLOWING
// EXAMPLES OF CODE AS SAMPLE ONLY.
//
// SIEMENS BUILDING TECHNOLOGIES, INC.  MAKES NO REPRESENTATIONS
// OR WARRANTIES OF ANY KIND  WITH RESPECT TO THE VALIDTY OF THE 
// CODES   OR   DESIRED   RESULTS   AND   DISCLAIMS   ALL   SUCH 
// REPRESENTATIONS   AND   WARRANTIES,  INCLUDING  FOR  EXAMPLE, 
// WARRANTIES  OF  MERCHANTABILITY  AND FITNESS FOR A PARTICULAR 
// PURPOSE.    SIEMENS  BUILIDNG  TECHNOLOGIES,  INC.  DOES  NOT 
// REPRESENT  OR  WARRANT  THAT  THE  FOLLOWING CODE SAMPLES ARE 
// ACCURATE, VALID, COMPLETE OR CURRENT.
//
/////////////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "infoserverexplorer.h"
#include "IPersistFile.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CIPersistFile::CIPersistFile(CComPtr<IUnknown> pUnknown)
{
	if(FAILED(pUnknown->QueryInterface(IID_IPersistFile, (void**)&m_pPersistFile)))
	{
		m_pPersistFile = NULL;
		TRACE("CIPersistFile() \n");
	}
}

CIPersistFile::CIPersistFile(CComPtr<IPersistFile>  pPersistFile)
{
	m_pPersistFile = pPersistFile;
}

CIPersistFile::~CIPersistFile()
{

}

HRESULT CIPersistFile::Load(LPCOLESTR pszFileName, DWORD dwMode)
{
	if(m_pPersistFile == NULL)
		return E_FAIL;

	HRESULT res = m_pPersistFile->Load(pszFileName, dwMode);
	if(FAILED(res))
	{
		TRACE(_T("CIPersistFile::Load"));
	}

	return res; 
}
	
HRESULT CIPersistFile::Save( LPCOLESTR pszFileName, BOOL fRemember) 
{
	if(m_pPersistFile == NULL)
		return E_FAIL;

	HRESULT res = m_pPersistFile->Save(pszFileName, fRemember);
	if(FAILED(res))
	{
		TRACE(_T("CIPersistFile::Save"));
	}

	return res; 
}