My server is an ATL COM Service. I am registering my service. I am
implementing the interface at the client. But still the call to advise is
failing. I didnt get what you meant by missing marshalling support. How do i
My first guess would be you failed to build and register your
proxy/stub DLL. Your HRESULT code is 0x80040202, e.g.
CONNECT_E_CANNOTCONNECT. This means the sink does not
implement the necessary interface. Since your sink does that
as evidenced by your QI implementation, the logical culprit is
missing marshaling support.
--
=====================================
Alexander Nickolov
Microsoft MVP [VC], MCSD
email: agnickolov@mvps.org
MVP VC FAQ: http://vcfaq.mvps.org
=====================================
"Rohit Kumar" <RohitKumar@discussions.microsoft.com> wrote in message
news:66382A9C-900C-414D-BB3E-0A7DDA829FEF@microsoft.com...
I have created an ATL service which supports connection points. I have
created a method in my interface called DoTest() and also defined a
callback
interface ItestEvents.
In the client side i am implementing the interface. Following is my client
code.
----------------------------------------------------------------------------------
DWORD dwAdvise;
CComPtr<Itest> pAdd;
hr =pAdd.CoCreateInstance(CLSID_test);
IConnectionPointContainer * pCPC;
IConnectionPoint * pCP;
hr = pAdd->QueryInterface(IID_IConnectionPointContainer,(void **)&pCPC);
hr = pCPC->FindConnectionPoint(IID_ItestEvents,&pCP);
pCPC->Release();
IUnknown *pSinkUnk;
CSink *pSink;
pSink = new CSink;
hr = pSink->QueryInterface (IID_IUnknown,(void **)&pSinkUnk);
hr = pCP->Advise(pSinkUnk,&dwAdvise);
hr = pAdd->DoTest();
pCP->Unadvise(dwAdvise); //call this when you need to disconnect from
server
pCP->Release();
CoUninitialize();
----------------------------------------------------------------------------------
Here the call to Advise() is returning -2147220990. Also my callback event
is not getting fired. I have implemented the callback interface as below
class CSink : public ItestEvents
{
private:
DWORD m_dwRefCount;
public:
CSink();
virtual ~CSink();
STDMETHODIMP OnTest(void)
{
AfxMessageBox("OnTest");
return S_OK;
}
HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, void **ppvObject)
{
if (iid == IID_ItestEvents)
{
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;
}
};
Please advice where have i went wrong...
Thanks in advance!!!!