Getting events from a COM object

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  Hello:
  
  I don´t know if this question belongs or not to this thread, but if you consider that there´s a suitable thread for it, please, let me know.
  
  About my question: I´m trying to get the events of a COM event source object and a part of this task is implementing the dispinterface handling those events through inheriting the ATL class IDispEventImpl. Later on my code I call to DispEventAdvise in order to connect the outgoing interface of the connectable object (the event source object) with the proper connection point. Everything compiles fine and such a call succeeds, however, the application exits each time it gets an event, so that makes me think that I did something wrong in relation with the event handling mechanism.
  
  Here there is the sink object implementation:
  
  static _ATL_FUNC_INFO _funcOnText = {
    CC_STDCALL,             // Calling convention.
    VT_I4,                         // Return type.
    1,                                 // Number of arguments.
    {                                  // Argument types.
      VT_BSTR
    }
  };
  
  
  class SrmPseudoDocumentEvents : public IDispEventImpl<1,
         SrmPseudoDocumentEvents,
         &__uuidof(SmIa::PseudoDocumentEvents),
         &GUID_NULL, 1, 0>
  {
  
  public:
  
    SrmPseudoDocumentEvents() {
     
    };
   
    virtual ~SrmPseudoDocumentEvents() {
     
    };
   
    STDMETHODIMP OnText(BSTR a_recognizedText) {
      KlDebugAlways("Text event !!!");
      return S_OK;
    };
  
    BEGIN_SINK_MAP(SrmPseudoDocumentEvents)
      SINK_ENTRY_INFO(1, __uuidof(SmIa::PseudoDocumentEvents), 0x01, OnText, &_funcOnText)
    END_SINK_MAP()
  
  };
  
  And here I call the DispEventAdvise method call:
  
  SrmPseudoDocumentEvents pseudoDocumentEvents = SrmPseudoDocumentEvents();
  
    hr = pseudoDocumentEvents.DispEventAdvise(reinterpret_cast<IUnknown*>(m_pIPseudoDocument),
                                              &__uuidof(SmIa::PseudoDocumentEvents));
    if (FAILED(hr)) {
      return getHResultInfo(hr,
                            reinterpret_cast<IDispatch*>(&pseudoDocumentEvents),
                            __uuidof(SmIa::PseudoDocumentEvents));
    }
  
  
  Thank you beforehand,
  
  Marcos
  

  • Edited by Markkos Wednesday, November 12, 2008 10:33 AM

  Wednesday, November 12, 2008 10:33 AM