VC++實現COM事件接收器

1、給程式新增ATL支援。

      右鍵->New ATL Object

2、實現IDispEventImpl 介面。

//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、連線物件

// ClientDlg.cpp : implementation file
//
#include "EventSink.h"

void CClientDlg::OnButton1()
{
 // TODO: Add your control notification handler code here
 ::CoInitialize(NULL);
 {
  IObjPtr pObj;
  CEventSink *pEventSink= new CEventSink;
  pObj.CreateInstance(__uuidof(Obj));
  pEventSink->DispEventAdvise(pObj);
  pObj->Func01();
  pEventSink->DispEventUnadvise(pObj);
  delete pEventSink;
 }
 ::CoUninitialize();
}