IEnumGUID RemoteEnumClassesOfCategories(int cImplemented, [In, MarshalAs(UnmanagedType.LPArray)] Guid[] rgcatidImpl, int cRequired, [In, MarshalAs(UnmanagedType.LPArray)] Guid[] rgcatidReq);

        IEnumGUID EnumImplCategoriesOfClass([In] ref Guid rclsid);

        IEnumGUID EnumReqCategoriesOfClass([In] ref Guid rclsid);

    public interface IEnumGUID

        void Clone(out IEnumGUID ppenum);

        Public Interface IEnumGUID

        Sub Clone(ByRef ppenum As IEnumGUID)