comdemo.cpp

C#高级编程第6版随书源代码 值得下载

// COMDemo.cpp : Implementation of CCOMDemo

#include "stdafx.h"
#include "COMDemo.h"


// CCOMDemo


STDMETHODIMP CCOMDemo::Greeting(BSTR name, BSTR* message)
{
   CComBSTR tmp("Welcome, ");
   tmp.Append(name);
   *message = tmp;
   return S_OK;

}

STDMETHODIMP CCOMDemo::Add(LONG val1, LONG val2, LONG* result)
{
   *result = val1 + val2;
   Fire_Completed();
   return S_OK;
}

STDMETHODIMP CCOMDemo::Sub(LONG val1, LONG val2, LONG* result)
{
   *result = val1 - val2;
   Fire_Completed();
   return S_OK;
}