enum __declspec(uuid("00000547-0000-0010-8000-00aa006d2ea4"))//是什么作用?

C/C++ code

enum __declspec(uuid("00000547-0000-0010-8000-00aa006d2ea4"))SearchDirectionEnum{    adSearchForward = 1,    adSearchBackward = -1};BOOL CADORecordset::Find(LPCTSTR lpFind, int nSearchDirection){    m_strFind = lpFind;    m_nSearchDirection = nSearchDirection;    ASSERT(!m_strFind.IsEmpty());    if(m_nSearchDirection == searchForward)    {        m_pRecordset->Find(_bstr_t(m_strFind), 0, adSearchForward, "");        if(!IsEof())        {            m_varBookFind = m_pRecordset->Bookmark;            return TRUE;        }    }    else if(m_nSearchDirection == searchBackward)    {        m_pRecordset->Find(_bstr_t(m_strFind), 0, adSearchBackward, "");        if(!IsBof())        {            m_varBookFind = m_pRecordset->Bookmark;            return TRUE;        }    }    else    {        TRACE("Unknown parameter. %d", nSearchDirection);        m_nSearchDirection = searchForward;    }    return FALSE;}