本文的更新： (2014-06-09 17:09)

 

最初的代码源自的，作者封装了不少工作，但调用时的代码还可以再封装一下，最后只要拷贝并修改Sink实现类的Invoke就好了。

 

以下是这个代码的头文件 "sinkimpl.h"，比free2000fly的"sinkimpl.h"多了一个模板类ConnectionPointerHelper<>

#if !defined( __sinkimpl_h_INCLUDED__ )#define __sinkimpl_h_INCLUDED__ #if _MSC_VER > 1000#pragma once#endif // _MSC_VER > 1000template
     
      class ATL_NO_VTABLE CSinkImpT	: public CComObjectRootEx
      
       	, public CComCoClass
       
        
         , &__uuidof(T)>	, public IDispatchImpl < EventInterface, &__uuidof(EventInterface), evtLibID >{public:	CSinkImpT() {}	virtual ~CSinkImpT() {}	typedef IDispatchImpl
         
           _parentClass;	typedef CSinkImpT
          
            _thisClass; STDMETHOD( Invoke )(DISPID dispidMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS* pdispparams, VARIANT* pvarResult, EXCEPINFO* pexcepinfo, UINT* puArgErr) { T * pThis = static_cast
           
            (this); return pThis->DoInvoke( dispidMember, riid, lcid, wFlags, pdispparams, pvarResult, pexcepinfo, puArgErr ); } DECLARE_NO_REGISTRY() DECLARE_PROTECT_FINAL_CONSTRUCT() BEGIN_COM_MAP( _thisClass ) COM_INTERFACE_ENTRY( IDispatch ) COM_INTERFACE_ENTRY( EventInterface ) END_COM_MAP(); STDMETHOD( DoInvoke )(DISPID dispidMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS* pdispparams, VARIANT* pvarResult, EXCEPINFO* pexcepinfo, UINT* puArgErr) { return _parentClass::Invoke( dispidMember, riid, lcid, wFlags, pdispparams, pvarResult, pexcepinfo, puArgErr ); }};inline HRESULT WINAPI GetConnectPoint( IUnknown * pItf, const IID & rSinkIID, IConnectionPoint ** ppCP ){ HRESULT hr = E_FAIL; do { if ( pItf == NULL || ppCP == NULL ) { break; } CComQIPtr
            
              spContainer; hr = pItf->QueryInterface( &spContainer ); if ( FAILED( hr ) ) { break; } hr = spContainer->FindConnectionPoint( rSinkIID, ppCP ); } while ( FALSE ); return hr;}///// 使用方法：// ComDllLib::ITestComPtr pCom;// HRESULT hr = pCom.CreateInstance( L"Test.Com" );// ConnectionPointHelper
             
               cph( pCom );//template
              
               class ConnectionPointHelper{ CComPtr
               
                 m_spInterface; DWORD m_dwCookie;public: ConnectionPointHelper( IUnknown* pInterface ) : m_spInterface( pInterface ), m_dwCookie( 0 ) { Connect(); } ~ConnectionPointHelper() { Disconnect(); }protected: void Connect() { HRESULT hr = E_FAIL; do { if ( m_spInterface == NULL || m_dwCookie != 0 ) { break; } CComQIPtr
                
                  spCP; hr = GetConnectPoint( m_spInterface, __uuidof(EventInterface), &spCP ); if ( FAILED( hr ) ){ break; } CComQIPtr
                 
                   spSink; { CComObject
                  
                    * pTmp = NULL; hr = CComObject
                   
                    ::CreateInstance( &pTmp ); if ( FAILED( hr ) ){ break; } pTmp->AddRef(); hr = pTmp->QueryInterface( &spSink ); pTmp->Release(); if ( FAILED( hr ) ){ break; } } spCP->Advise( spSink, &m_dwCookie ); } while ( FALSE ); } void Disconnect() { HRESULT hr = E_FAIL; do { if ( m_dwCookie == 0 ) { break; } CComQIPtr
                    
                      spCP; hr = GetConnectPoint( m_spInterface, __uuidof(EventInterface), &spCP ); if ( FAILED( hr ) ){ break; } hr = spCP->Unadvise( m_dwCookie ); m_dwCookie = 0; } while ( FALSE ); }};#endif // !defined( __sinkimpl_h_INCLUDED__ )
                    
                   
                  
                 
                
               
              
             
            
           
          
         
        
       
      
     

　　

使用方法：

UIAddChildWindowContainer( m_hWnd );		ComDllLib::ITestComPtr pCom;		CComPtr
     
       pUnknown;		HRESULT hr = pCom.CreateInstance( L"Test.Com" );		if (SUCCEEDED(hr))		{			hr = pCom->QueryInterface( IID_IUnknown, reinterpret_cast
      
       (&pUnknown) );			if ( SUCCEEDED( hr ) )			{				ConnectionPointHelper
       
         cph( pUnknown );				LONG c = pCom->Add( 1, 5 );			}		}
       
      
     

　　CSink3的实现（与free2000fly写的一样）：

// 要响应连接点事件，只需要重写此类// class DECLSPEC_UUID( "492194D9-7BEE-422D-AE7C-C43A809F20EC" ) CSink3;class ATL_NO_VTABLE CSink3	: public CSinkImpT < CSink3, ComDllLib::_ITestComEvent >{public:	CSink3( void ) {  }	virtual ~CSink3( void ) {}	typedef CSinkImpT
     
       _parentClass;	STDMETHOD( DoInvoke )(DISPID dispidMember, REFIID riid,						   LCID lcid, WORD wFlags, DISPPARAMS* pdispparams, VARIANT* pvarResult,						   EXCEPINFO* pexcepinfo, UINT* puArgErr)	{		// 3. the dispidMember must referenced from .thl file, and you can have a look using oleview.exe		switch ( dispidMember )		{		case 1:		{			CComVariant result( *pvarResult );			if ( SUCCEEDED( result.ChangeType( VT_BSTR ) ) )				::MessageBoxW( ::GetActiveWindow(), result.bstrVal, L"Sink Message", MB_OK );			return S_OK;		}		default:			break;		}		return _parentClass::DoInvoke( dispidMember, riid,									   lcid, wFlags, pdispparams, pvarResult,									   pexcepinfo, puArgErr );	}};