我用一个简单的 COM 对象编写了一个简单的 COM DLL inproc 服务器。COM 对象实现了一个连接点。
我知道如何创建一个派生自 的 ATL 客户端IDispEventImpl
,并使用接收器映射来简化此过程。
但是,出于演示的目的,我想创建一个 win32 控制台应用程序,它使用一个调用我的简单 COM 对象的类,然后充当连接点接收器。
我不知道如何提供一个实现IDispatch
- 有人可以推荐这方面的文档,因为我找不到任何文档(我有 ATL Internals,但这似乎不能满足我的需要)。
这是我已经上过的课程:
#pragma once
#include <iostream>
using namespace std;
// Because we're implementing a connection points sink (_IPogFarmEvents)
// in a non-ATL class, we must provide implementations for IUnknown and IDispatch.
class KidWithAPogFarm : public _IPogFarmEvents
{
private:
DWORD m_dwRefCount;
LONG m_lNumPogs;
public:
KidWithAPogFarm() :
m_dwRefCount (0),
m_lNumPogs (0)
{
}
~KidWithAPogFarm()
{
}
// -- IUnknown
HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, void **ppvObject)
{
if (iid == DIID__IPogFarmEvents)
{
m_dwRefCount++;
*ppvObject = (void *)this;
return S_OK;
}
if (iid == IID_IUnknown)
{
m_dwRefCount++;
*ppvObject = (void *)this;
return S_OK;
}
return E_NOINTERFACE;
}
ULONG STDMETHODCALLTYPE AddRef()
{
m_dwRefCount++;
return m_dwRefCount;
}
ULONG STDMETHODCALLTYPE Release()
{
ULONG l;
l = m_dwRefCount--;
if ( 0 == m_dwRefCount)
delete this;
return l;
}
// -- IDispatch
STDMETHODIMP GetTypeInfoCount(UINT *pctinfo)
{
return E_NOTIMPL;
}
STDMETHODIMP GetTypeInfo( UINT iTInfo, LCID lcid, ITypeInfo **ppTInfo )
{
return E_NOTIMPL;
}
STDMETHODIMP GetIDsOfNames(const IID &riid, LPOLESTR *rgszNames, UINT cNames, LCID lcid, DISPID *rgDispId )
{
return E_NOTIMPL;
}
STDMETHODIMP Invoke(DISPID dispIdMember, const IID &riid, LCID lcid, WORD wFlags, DISPPARAMS *pDispParams, VARIANT *pVarResult, EXCEPINFO *pExcepInfo, UINT *puArgErr )
{
return E_NOT_IMPL;
}
// -- IAntFarmEvents
STDMETHODIMP OnFarmCreated(LONG lInitialPopulation)
{
m_lNumPogs = lInitialPopulation;
cout << "The kid has a pog farm with " << m_lNumPogs << " pogs " << endl;
return S_OK;
}
};