DECLARE_INTERFACE_(IPart, IUnknown)
{
    // 获取部件的类型
    STDMETHOD(GetPartType)(THIS_
        _Out_  EPARTTYPE *pPartType
    ) PURE;

    // 获取部件的子类型
    STDMETHOD(GetSubType)(THIS_
        _Out_  PGUID pguidSubType
    ) PURE;

    // 获取部件的控制接口
    STDMETHOD(QueryInterface)(THIS_
        _In_   REFIID iid,
        _Out_  PVOID *ppvObject
    ) PURE;

    // 获取部件的名称
    STDMETHOD(GetControlInterfaceId)(THIS_
        _Out_  PGUID pguidInterface
    ) PURE;

    // 获取部件的状态
    STDMETHOD(GetDeviceId)(THIS_
        _Outptr_result_maybenull_  LPWSTR *ppwstrDeviceId
    ) PURE;

    // 获取部件的唯一标识符
    STDMETHOD(Activate)(THIS_
        _In_   DWORD dwClsContext,
        _In_   REFIID refiid,
        _Out_  PVOID *ppvObject
    ) PURE;

    // 获取部件的连接数
    STDMETHOD(RegisterControlChangeCallback)(THIS_
        _In_   GUID *pguidEventContext,
        _In_   IControlChangeNotify *pNotify
    ) PURE;

    // 注销控制变化回调
    STDMETHOD(UnregisterControlChangeCallback)(THIS_
        _In_   IControlChangeNotify *pNotify
    ) PURE;
};