Windows编程

开发平台：
Visual C++

component.cpp：源码内容
							// component.cpp
#include <iostream.h>
#include "Componentcomponent.h" // Generated by MIDL
#include "registry.h"
const REG_DATA g_regData[] = {
    { "CLSID\{10000002-0000-0000-0000-000000000001}", 0, "Inside COM+: In Process Component" },
	{ "CLSID\{10000002-0000-0000-0000-000000000001}\InprocServer32", 0, (const char*)-1 }, 
	{ "CLSID\{10000002-0000-0000-0000-000000000001}\ProgID", 0, "Component.InsideCOM.1" },
	{ "CLSID\{10000002-0000-0000-0000-000000000001}\VersionIndependentProgID", 0, "Component.InsideCOM" },
	{ "Component.InsideCOM", 0, "Inside COM+: In Process Component" },
	{ "Component.InsideCOM\CLSID", 0, "{10000002-0000-0000-0000-000000000001}" },
	{ "Component.InsideCOM\CurVer", 0, "Component.InsideCOM.1" },
	{ "Component.InsideCOM.1", 0, "Inside COM+: In Process Component" },
	{ "Component.InsideCOM.1\CLSID", 0, "{10000002-0000-0000-0000-000000000001}" },
	{ 0, 0, 0 }
};
HINSTANCE g_hInstance;
long g_cLocks = 0;
class CInsideCOM : public ISum
{
public:
	// IUnknown
	ULONG __stdcall AddRef();
	ULONG __stdcall Release();
	HRESULT __stdcall QueryInterface(REFIID riid, void** ppv);
	// ISum
	HRESULT __stdcall Sum(int x, int y, int* retval);
	CInsideCOM() : m_cRef(1) { g_cLocks++; }
	~CInsideCOM()
		{
		cout << "Component: CInsideCOM::~CInsideCOM()" << endl;
		g_cLocks--;
		}
private:
	ULONG m_cRef;
};
ULONG CInsideCOM::AddRef()
{
	cout << "Component: CInsideCOM::AddRef() m_cRef = " << m_cRef + 1 << endl;
	return ++m_cRef;
}
ULONG CInsideCOM::Release()
{
	cout << "Component: CInsideCOM::Release() m_cRef = " << m_cRef - 1 << endl;
	if(--m_cRef != 0)
		return m_cRef;
	delete this;
	return 0;
}
HRESULT CInsideCOM::QueryInterface(REFIID riid, void** ppv)
{
	if(riid == IID_IUnknown)
	{
		cout << "Component: CInsideCOM::QueryInterface() for IUnknown returning " << this << endl;
		*ppv = (IUnknown*)this;
//		*ppv = static_cast<IUnknown*>(this);
	}
	else if(riid == IID_ISum)
	{
		cout << "Component: CInsideCOM::QueryInterface() for ISum returning " << this << endl;
		*ppv = (ISum*)this;
//		*ppv = static_cast<ISum*>(this);
	}
	else 
	{
		*ppv = NULL;
		return E_NOINTERFACE;
	}
	AddRef();
//	reinterpret_cast<IUnknown*>(*ppv)->AddRef();
	return S_OK;
}
HRESULT CInsideCOM::Sum(int x, int y, int* retval)
{
	cout << "Component: CInsideCOM::Sum() " << x << " + " << y << " = " << x + y << endl;
	*retval = x + y;
	return S_OK;
}
class CFactory : public IClassFactory
{
public:
	// IUnknown
	ULONG __stdcall AddRef();
	ULONG __stdcall Release();
	HRESULT __stdcall QueryInterface(REFIID riid, void** ppv);
	// IClassFactory
	HRESULT __stdcall CreateInstance(IUnknown *pUnknownOuter, REFIID riid, void** ppv);
	HRESULT __stdcall LockServer(BOOL bLock);
	CFactory() : m_cRef(1) { g_cLocks++; }
	~CFactory() { g_cLocks--; }
private:
	ULONG m_cRef;
};
ULONG CFactory::AddRef()
{
	cout << "Component: CFactory::AddRef() m_cRef = " << m_cRef + 1 << endl;
	return ++m_cRef;
//	g_cLocks++;
//	return 2;
}
ULONG CFactory::Release()
{
	cout << "Component: CFactory::Release() m_cRef = " << m_cRef - 1 << endl;
	if(--m_cRef != 0)
		return m_cRef;
	delete this;
	return 0;
//	g_cLocks--;
//	return 1;
}
HRESULT CFactory::QueryInterface(REFIID riid, void** ppv)
{
	if(riid == IID_IUnknown)
	{
		cout << "Component: CFactory::QueryInterface() for IUnknown returning " << this << endl;
		*ppv = (IUnknown*)this;
	}
	if(riid == IID_IClassFactory)
	{
		cout << "Component: CFactory::QueryInteface() for IClassFactory " << this << endl;
		*ppv = (IClassFactory*)this;
	}
	else
	{
		*ppv = NULL;
		return E_NOINTERFACE;
	}
	AddRef();
	return S_OK;
}
HRESULT CFactory::CreateInstance(IUnknown *pUnknownOuter, REFIID riid, void** ppv)
{
	if(pUnknownOuter != NULL)
		return CLASS_E_NOAGGREGATION;
	CInsideCOM *pInsideCOM = new CInsideCOM;
	cout << "Component: CFactory::CreateInstance() " << pInsideCOM << endl;
	if(pInsideCOM == NULL)
		return E_OUTOFMEMORY;
	// QueryInterface probably for IID_IUnknown
	HRESULT hr = pInsideCOM->QueryInterface(riid, ppv);
	pInsideCOM->Release();
	return hr;
}
HRESULT CFactory::LockServer(BOOL bLock)
{
	if(bLock)
		g_cLocks++;
	else
		g_cLocks--;
	return S_OK;
}
HRESULT __stdcall DllCanUnloadNow()
{
	cout << "Component: DllCanUnloadNow() " << (g_cLocks == 0 ? "Yes" : "No") << endl;
	if(g_cLocks == 0)
		return S_OK;
	else
	    return S_FALSE;
}
HRESULT __stdcall DllGetClassObject(REFCLSID clsid, REFIID riid, void** ppv)
{
	cout << "Component: DllGetClassObject" << endl;
	
	if(clsid != CLSID_InsideCOM)
		return CLASS_E_CLASSNOTAVAILABLE;
	CFactory* pFactory = new CFactory;
	if(pFactory == NULL)
		return E_OUTOFMEMORY;
	// QueryInterface probably for IClassFactory
	HRESULT hr = pFactory->QueryInterface(riid, ppv);
	pFactory->Release();
	return hr;
}
HRESULT __stdcall DllRegisterServer()
{
	char DllPath[MAX_PATH];
	GetModuleFileName(g_hInstance, DllPath, sizeof(DllPath));
	OLECHAR wDllPath[MAX_PATH];
	mbstowcs(wDllPath, DllPath, sizeof(wDllPath));
	ITypeLib* pTypeLib;
	HRESULT hr = LoadTypeLibEx(wDllPath, REGKIND_REGISTER, &pTypeLib);
	if(FAILED(hr))
		return hr;
	pTypeLib->Release();
	return RegisterServerEx(g_regData, DllPath);
}
HRESULT __stdcall DllUnregisterServer()
{
	UnRegisterTypeLib(LIBID_Component, 1, 0, LANG_NEUTRAL, SYS_WIN32);
	return UnregisterServerEx(g_regData);
}
BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, void* pv)
{
	g_hInstance = hInstance;
	return TRUE;
}

						