// IShutdownSink.h: interface for the IShutdownSink class.
//
//////////////////////////////////////////////////////////////////////
//IOPCShutdown:為一個點連接對象,當服務器對象需要關閉時調用ShutdownRequest 方法。
//	客戶端將要釋放和這個服務器對象相關的連接和對象。
//IOPCShutdown:the client must create an object that supports 
//	both the IUnknown and IOPCShutdown Interfase.
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_ISHUTDOWNSINK_H__D79C4481_0CE6_4799_A33A_6F3CBBBAB055__INCLUDED_)
#define AFX_ISHUTDOWNSINK_H__D79C4481_0CE6_4799_A33A_6F3CBBBAB055__INCLUDED_


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

#include "OPCData.h"
class COPCServer;

class IShutdownSink : public IOPCShutdown  
{
public:
	IShutdownSink (COPCServer *pServer);
	~IShutdownSink ();

	// IUnknown Methods
	STDMETHODIMP         QueryInterface (REFIID iid, LPVOID *ppInterface);
	STDMETHODIMP_(ULONG) AddRef ();
	STDMETHODIMP_(ULONG) Release ();

	// IOPCShutdown Methods 
	STDMETHODIMP ShutdownRequest (LPCWSTR lpwszReason);

private:
	DWORD m_cnRef;
	COPCServer *m_pServer;
};

#endif // !defined(AFX_ISHUTDOWNSINK_H__D79C4481_0CE6_4799_A33A_6F3CBBBAB055__INCLUDED_)