iopcasyncio2.h

此为Insight opc client InfoServerExplorer源程序

/////////////////////////////////////////////////////////////////////////////
//
//  OPC Data Access VC++ Client:	IOPCAsyncIO2.h
//									(Header File)
//
/////////////////////////////////////////////////////////////////////////////
//
//          Author: Raphael Imhof
//    Initial Date: 12/11/98
//       $Workfile: IOPCAsyncIO2.h $
//       $Revision: 1 $
//           $Date: 7/27/99 5:23p $
//   Target System: Microsoft Windows NT 4.0
//     Environment: Visual C++ 5.0 / OPC DataAccess 2.0
//         Remarks: 
//
/////////////////////////////////////////////////////////////////////////////
//
//     Description: interface of the CIOPCAsyncIO2 class.
//					IOPCAsyncIO2 wrapper.
//					
//
/////////////////////////////////////////////////////////////////////////////
//
//  History of Changes     (Please remove very old comments and blank lines!)
//            $Log: /IDK/OPCServer/clients/VC++/InfoServerExplorer/IOPCAsyncIO2.h $
// 
// 1     7/27/99 5:23p Imhof
// 
// 1     7/27/99 5:18p Imhof
// 
// 3     1/15/99 6:43p Imhof
// Updated legal notice.
// 
// 2     12/11/98 5:58p Imhof
// Made modifications for OPC 2.0.
// 
//  $Nokeywords:$ (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.
//
/////////////////////////////////////////////////////////////////////////////

#if !defined(AFX_IOPCASYNCIO2_H__4F348244_36AC_11D2_AD8B_00104B2C9D06__INCLUDED_)
#define AFX_IOPCASYNCIO2_H__4F348244_36AC_11D2_AD8B_00104B2C9D06__INCLUDED_

#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000

#include <opcda.h>

class CIOPCAsyncIO2  
{
public:
	CIOPCAsyncIO2(CComPtr<IOPCAsyncIO2> pOPCAsyncIO2);
	CIOPCAsyncIO2(CComPtr<IOPCGroupStateMgt> pOPCGroup);
	virtual ~CIOPCAsyncIO2();

	
	HRESULT Write(	DWORD	        dwCount,
					OPCHANDLE*		phServer,
					VARIANT*		pItemValues,
					DWORD			dwTransactionID,
					DWORD*			pdwCancelID,
					HRESULT**		ppErrors );

	HRESULT Read(	DWORD		dwCount,
					OPCHANDLE*	phServer,
					DWORD		dwTransactionID,
					DWORD*		pdwCancelID,
					HRESULT**	ppErrors);

	HRESULT Refresh2(	OPCDATASOURCE	dwSource,
						DWORD			dwTransactionID,
						DWORD*			pdwCancelID);

	HRESULT	Cancel2(DWORD	dwCancelID);
	
	HRESULT	SetEnable(BOOL bEnable);

	HRESULT	GetEnable(BOOL* pbEnable);

private:
	CComPtr<IOPCAsyncIO2>  m_pOPCAsyncIO2;

};

#endif // !defined(AFX_IOPCASYNCIO2_H__4F348244_36AC_11D2_AD8B_00104B2C9D06__INCLUDED_)