CControlNode_fnConstructor

IID_IKsPropertySet

HRESULT WINAPI CControlNode_fnConstructor	(	IBaseFilter *	pFilter,
		ULONG	NodeType,
		ULONG	PinId,
		REFIID	riid,
		LPVOID *	ppv
	)

Definition at line 92 of file controlnode.cpp.

Referenced by CBDADeviceControl::GetControlNode().

{
    WCHAR Buffer[100];
    HRESULT hr;
    IPin * pPin = NULL;
    IKsPropertySet * pProperty;

    // store pin id
    swprintf(Buffer, L"%u", PinId);

    // try find target pin
    hr = pFilter->FindPin(Buffer, &pPin);

    if (FAILED(hr))
    {
#ifdef BDAPLGIN_TRACE
        swprintf(Buffer, L"CControlNode_fnConstructor failed find pin %lu with %lx\n", PinId, hr);
        OutputDebugStringW(Buffer);
#endif
        return hr;
    }

    // query for IKsPropertySet interface
    hr = pPin->QueryInterface(IID_IKsPropertySet, (void**)&pProperty);
    if (FAILED(hr))
        return hr;

#ifdef BDAPLGIN_TRACE
    swprintf(Buffer, L"CControlNode_fnConstructor get IID_IKsObject status %lx\n", hr);
    OutputDebugStringW(Buffer);
#endif

    // release IPin interface
    pPin->Release();

    // construct device control
    CControlNode * handler = new CControlNode(pProperty, NodeType, PinId);

#ifdef BDAPLGIN_TRACE
    OutputDebugStringW(L"CControlNode_fnConstructor\n");
#endif

    if (!handler)
        return E_OUTOFMEMORY;

    if (FAILED(handler->QueryInterface(riid, ppv)))
    {
        /* not supported */
        delete handler;
        return E_NOINTERFACE;
    }

    return NOERROR;
}

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