- シンククラスを実装- COM サーバーからイベント通知を受け取る
- IDispatchから派生したイベント インターフェイス
IConnectionPoint::Advise呼び出しがE_NOTIMPLを返すという問題があります。これは、接続ポイントでMSDNという1 つの接続しか許可されていないことが原因である可能性があります。
ノート：
- COM サーバーはアウトプロセスです
- 純粋な C++ 実装
編集：
S8.tlh : Win32 タイプ ライブラリ S8.tlb に相当する C++ ソース:
struct __declspec(uuid("090910c3-28c3-45fe-861d-edcf11aa9788"))
IS8SimulationEvents : IDispatch
{
// Methods:
HRESULT S8SimulationReset ( );
HRESULT S8SimulationEndRun ( );
HRESULT S8SimulationCustomEvent (
BSTR * TextInfo );
HRESULT S8SimulationOpened ( );
HRESULT S8SimulationEndTrial ( );
HRESULT S8SimulationOEMEvent (
BSTR * TextInfo );
HRESULT S8SimulationReadyToClose ( );
HRESULT S8SimulationUserMessage (
long * Answer,
BSTR * TextMsg,
long ValidAnswers );
};
Class Sinkの実装- イベント通知を処理するため:
class Sink : public IS8SimulationEvents
{
public:
Sink(){
m_dwRefCount = 0;
};
~Sink(){};
/*
* IS8SimulationEvent interface functions
*/
HRESULT S8SimulationEndTrial()
{
cout << "Simulation complete." << endl;
return S_OK;;
};
HRESULT S8SimulationOpened()
{
cout << "Simulation open." << endl;
return S_OK;
};
HRESULT S8SimulationReadyToClose()
{
cout << "Simulation ready to close" << endl;
return S_OK;
};
ULONG STDMETHODCALLTYPE AddRef()
{
m_dwRefCount++;
return m_dwRefCount;
};
ULONG STDMETHODCALLTYPE Release()
{
ULONG l;
l = m_dwRefCount--;
if (0 == m_dwRefCount)
{
delete this;
}
return m_dwRefCount;
};
HRESULT STDMETHODCALLTYPE QueryInterface(
REFIID iid ,
void **ppvObject)
{
m_dwRefCount++;
*ppvObject = (void *)this;
return S_OK;
};
HRESULT STDMETHODCALLTYPE GetTypeInfoCount(UINT *pctinfo)
{
return E_NOTIMPL;
};
HRESULT STDMETHODCALLTYPE GetIDsOfNames(
REFIID riid,
LPOLESTR *rgszNames,
UINT cNames,
LCID lcid,
DISPID *rgDispId)
{
return E_NOTIMPL;
};
HRESULT STDMETHODCALLTYPE GetTypeInfo(
unsigned int iTInfo,
LCID lcid,
ITypeInfo FAR* FAR* ppTInfo)
{
return E_NOTIMPL;
};
HRESULT STDMETHODCALLTYPE Invoke(
DISPID dispIdMember,
REFIID riid,
LCID lcid,
WORD wFlags,
DISPPARAMS FAR* pDispParams,
VARIANT FAR* pVarResult,
EXCEPINFO FAR* pExcepInfo,
unsigned int FAR* puArgErr)
{
HRESULT hresult = S_OK;
if (pDispParams)
{
switch (dispIdMember) {
case 1:
return S8SimulationEndTrial();
case 2:
return S8SimulationOpened();
case 3:
return S8SimulationReadyToClose();
default:
return E_NOTIMPL;
}
}
return E_NOTIMPL;
}
private:
DWORD m_dwRefCount;
public:
void SetupConnectionPoint (IS8Simulation *pis8)
{
HRESULT hresult;
IConnectionPointContainer *pContainer = NULL;
IConnectionPoint *pConnection = NULL;
IUnknown *pSinkUnk = NULL;
Sink *pSink = NULL;
DWORD dwAdvise;
dwAdvise = 0;
hresult = pis8->QueryInterface(
__uuidof(IConnectionPointContainer),
(void **) &pContainer);
if (SUCCEEDED(hresult))
{
cout << "IConnectionPointContainer inteface supported." << endl;
} else {
cerr << "Error: No such interface supported." << endl;
exit (hresult);
}
__uuidof(IS8SimulationEvents),
&pConnection);
switch (HRESULT_CODE(hresult)) {
case NOERROR:
cout << "Obtained valid interface pointer." << endl;
break;
case E_POINTER:
cerr << "Invalid pointer: the address is not valid." << endl;
exit (hresult);
break;
case CONNECT_E_NOCONNECTION:
cerr << "This connectable object not support the "
"outgoing interface specified." << endl;
exit (hresult);
break;
case E_UNEXPECTED:
default:
cerr << "Catastrophic failure." << endl;
exit (hresult);
break;
}
pContainer->Release();
hresult = pSink->QueryInterface(
__uuidof(IUnknown),
(void **)&pSinkUnk);
if (FAILED(hresult))
{
exit (EXIT_FAILURE);
}
hresult = pConnection->Advise(
pSinkUnk,
&dwAdvise);
switch (HRESULT_CODE(hresult)) {
case NOERROR:
cout << "The connection has been established and "
"*dwAdvise has the connection token." << endl;
break;
case E_POINTER:
cerr << "Invalid pointer: "
"the value pSinkUnk or dwAdvise is not valid." << endl;
exit (hresult);
break;
case CONNECT_E_ADVISELIMIT:
cerr << "The connection point has already reached "
"its limit of connections and cannot accept "
"any more." << endl;
exit (hresult);
break;
case CONNECT_E_CANNOTCONNECT:
cerr << "The sink does not support the interface "
"required by this connection point." << endl;
exit (hresult);
break;
case E_NOTIMPL:
break;
case E_UNEXPECTED:
default:
cerr << "Catastrophic failure." << endl;
exit (hresult);
break;
}
return;
}
};
編集：
シンククラスでのIUnknownインターフェイスの実装
ULONG STDMETHODCALLTYPE AddRef()
{
m_dwRefCount++;
return m_dwRefCount;
};
ULONG STDMETHODCALLTYPE Release()
{
ULONG l;
l = m_dwRefCount--;
if (0 == m_dwRefCount)
{
delete this;
}
return m_dwRefCount;
};
HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, void **ppvObject)
{
m_dwRefCount++;
*ppvObject = (void *)this;
return S_OK;
};
質問：
- コンテナーが複数の接続をサポートしているかどうかを確認する方法は?
- さらに情報が必要な場合は、それに応じてコメントしてください。