Windows编程

开发平台：

Visual C++

client.cpp：源码内容

							// client.cpp
#define _WIN32_DCOM
#include <iostream.h>
#include "Componentcomponent.h"
void main()
{
	cout << "Client: Calling CoInitialize()" << endl;
	CoInitializeEx(NULL, COINIT_MULTITHREADED);
		
	IUnknown* pUnknown = 0;
	ISum* pSum = 0;
	cout << "Client: Calling CoGetClassObject() " << endl;
	IClassFactory* pClassFactory = 0;
	CoGetClassObject(CLSID_InsideCOM, CLSCTX_LOCAL_SERVER, NULL, IID_IClassFactory, (void**)&pClassFactory);
	cout << "Client: CreateInstance() " << endl;
	pClassFactory->CreateInstance(NULL, IID_IUnknown, (void**)&pUnknown);
	cout << "Client: Release() " << endl;
	pUnknown->Release();
	pUnknown = 0;
	cout << "Client: CreateInstance again() " << endl;
	pClassFactory->CreateInstance(NULL, IID_IUnknown, (void**)&pUnknown);
	pClassFactory->Release();
//	cout << "Client: Calling CoCreateInstance() " << endl;
//	CoCreateInstance(CLSID_InsideCOM, NULL, CLSCTX_LOCAL_SERVER, IID_IUnknown, (void**)&pUnknown);
	cout << "Client: Calling QueryInterface() for ISum on " << pUnknown << endl;
	HRESULT hr = pUnknown->QueryInterface(IID_ISum, (void**)&pSum);
	if(FAILED(hr))
		cout << "QueryInterface FAILED" << endl;
	cout << "Client: Calling Release() for pUnknown" << endl;
	hr = pUnknown->Release();
	cout << "Client: pSum = " << pSum << endl;
	int sum;
	hr = pSum->Sum(4, 9, &sum);
	if(SUCCEEDED(hr))
		cout << "Client: Calling Sum() return value is " << sum << endl;
	cout << "Client: Calling Release() for pSum" << endl;
	hr = pSum->Release();
	cout << "Client: Calling CoUninitialize()" << endl;
	CoUninitialize();
}

						