本地EXE COM服务器

  DWORD regID = 0;
  hr = CoRegisterClassObject(CLSID_TimeBeijingClass,
   (IClassFactory*)&ClassFactory,
   CLSCTX_LOCAL_SERVER,
   REGCLS_MULTIPLEUSE,
   &regID);

  if ( FAILED(hr) )
  {
   MessageBox(NULL, "CoRegisterClassObject()", "", MB_OK);
   CoUninitialize();
   exit(1);
  }
  
  // 进入消息循环，直到WM_QUIT到达
  MSG ms;
  while(GetMessage(&ms, 0, 0, 0))
  {
   TranslateMessage(&ms);
   DispatchMessage(&ms);
  }
  
  // 注销工厂类
  CoRevokeClassObject(regID); 
 }
 
 // 退出COM环境
 CoUninitialize(); 

 MessageBox(NULL, "Server is dying",
  "EXE Message!", MB_OK | MB_SETFOREGROUND);
 
 return 0;
}

（七）建立注册文件
注册文件用于添加程序注册表信息，文件内容如下：

REGEDIT
HKEY_CLASSES_ROOT/Justin.TimeBeijingServer.TimeBeijingClass/CLSID = {57E9BE40-AE4F-493b-A79B-FBBF7EC7F2AE}
HKEY_CLASSES_ROOT/CLSID/{57E9BE40-AE4F-493b-A79B-FBBF7EC7F2AE} = Justin.TimeBeijingServer.TimeBeijingClass
HKEY_CLASSES_ROOT/CLSID/{57E9BE40-AE4F-493b-A79B-FBBF7EC7F2AE}/LocalServer32 = D:/COM/Debug/COM.exe

双击此文件，将注册信息加入注册表。

（八）建立客户端
上面的程序编译链接后就可以得到一个本地EXE COM服务器。下面为了测试，我们将建立一个客户程序。

// TEST.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "TEST.h"
#include "../TimeBeijing.h"
#include "../TimeBeijing_i.c"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// The one and only application object

CWinApp theApp;

using namespace std;

int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])
{
 cout << "初始化COM环境" << endl;

 CoInitialize(NULL);

 HRESULT hr;
 IClassFactory* pICF = NULL;//定义接口指针
 
 ITimeBeijing *pTimeBeijing = NULL;
 
 cout << "获取工厂接口指针" << endl;

 hr = CoGetClassObject(CLSID_TimeBeijingClass,
  CLSCTX_LOCAL_SERVER,
  NULL,
  IID_IClassFactory,
  (void**)&pICF);

 if ( FAILED(hr) )
 {
  MessageBox(NULL, "CoGetClassObject()", "fail", MB_OK);
  exit(1);
 }
 
 cout << "获取ITimeBeijing接口指针" << endl;

 hr = pICF->CreateInstance(NULL,
  IID_ITimeBeijing,
  (void**)&pTimeBeijing);

 if ( FAILED(hr) )
 {
  MessageBox(NULL, "CoCreateInstance()", "fail", MB_OK);
  exit(1);
 }
 
 int h, m, s;
 pTimeBeijing->GetTimeBeijing(&h, &m, &s);//使用接口

 printf("Time NOW : %d : %d : %d/n", h, m, s);//显示结果
 
 if ( pICF )         pICF->Release();//释放接口
 if ( pTimeBeijing ) pTimeBeijing->Release();
 
 cout << "退出COM环境" << endl;

 CoUninitialize();

 cout << "END" << endl;

 getchar();
 return 0;
}

（九）测试结果
  初始化COM环境
  获取工厂接口指针
  获取ITimeBeijing接口指针
  Time NOW : 12 : 54 : 23
  退出COM环境
  END