class CDaveComponent: public IJack, public IClavdivs {
  private:
    long m_lRefCount;

  public:
    CDaveComponent();
    ~CDaveComponent();

    // IUnknown interface methods
	STDMETHOD(QueryInterface)(REFIID riid, void** ppv);
    STDMETHOD_(ULONG, AddRef)();
    STDMETHOD_(ULONG, Release)();

	// IJack interface methods
    STDMETHOD(Test)();

	// IClavdivs interface methods
    STDMETHOD(DisplayStuff)();
};