1、给程序添加ATL支持。     右键->New ATL Object     2、实现IDispEventImpl 接口。     //EventSink.h     #import "..\Server\Debug\Server.exe" raw_interface_only,no_namespace,named_guids     class  CEventSink :     public IDispEventImpl<0, CEventSink,&DIID__IObjEvents,&LIBID_SERVERLib, 1, 0>     {     public:     CEventSink()     {     }     public:     BEGIN_SINK_MAP(CEventSink)     SINK_ENTRY_EX(0, DIID__IObjEvents, 1, cbFunc01)     END_SINK_MAP()     STDMETHOD(cbFunc01)();     };       //EventSink.cpp     #include "stdafx.h"     #include "EventSink.h"     STDMETHODIMP CEventSink::cbFunc01()     {     AfxMessageBox("called by Event from dll Server !");     return S_OK;     }       3、连接对象     // ClientDlg.cpp : implementation file     //