How to fill a combobox in c ++ mfc with id and description?

I have this function that fills the combobox in C ++ mfc but I do not know how to save the id and the description in the combobox, since it currently does it with the pure description. In c # a pairvalue object is used to do this, but I do not find c ++ mfc. if someone could guide me.

bool CDlgSolicitudes::fObtenerCompradores()
{
CString sConsulta;
bool bRegresa=false;


if( odbc.Open("PostgreSQL", g.server, g.user, g.password , g.database) )
{
    sConsulta.Format("select numempleado, nombreempleado from fun_inconsultarcompradores()");

    CConsultarCompradores crSQL( &odbc );
    if( crSQL.Exec( sConsulta ) )
    {

        m_cbCompradores.InsertString(-1, "Selecciona un comprador");
        crSQL.activarCols();
        while( crSQL.Leer() )
        {
            CString nomComprador;
            nomComprador.Format("%s",crSQL.nomComprador);
            nomComprador = nomComprador.Trim();
            m_cbCompradores.AddString(nomComprador);

        }
        bRegresa = true;
        odbc.Close();
    }
    else
    {
        crSQL.odbc->GetLastError(crSQL.GetHstmt()); 
        CString error;
        error.Format("[fObtenerCompradores] %s", crSQL.odbc->m_szErrorMsg);
        odbc.Close();
        AfxMessageBox(error);
    }
}
else
{
    CString error;
    error.Format("[fObtenerCompradores] %s", odbc.m_szErrorMsg);
    odbc.Close();
    AfxMessageBox(error);
}

    return bRegresa;
}

Example: If my function fun_inconsulting buyers () I get the following: 435 - BUYER 1 778 - BUYER 2 921 - BUYER 3

Therefore the combo will fill it with the descriptions: BUYER 1 BUYER 2 BUYER 3

But if I want to save the selected buyer in bd, but nothing else, how can I do it if in the combo I only have the description.