CRecordset::Open postgresql procedure call don't work

‌Hi
I migrate from MSSQL to postgresql 11. I translate MSSQL stored procedure to Postgresql one :

CREATE PROCEDURE procacp ()
LANGUAGE SQL
AS $$
SELECT tabjdbexploit.jdbeid, tabjdbexploit.jdbeproc,
    tabjdbexploit.jdbedate, tabjdbexploit.jdbetypemsg,
    tabjdbexploit.jdbeurg, tabjdbexploit.jdbeconfid,
    tabjdbexploit.jdbeetat, tabmsgacp.acpid,  
    tabmsgacp.acpnumserie,
    tabmsgacp.acpsignserv, tabmsgacp.acpnumligne,
    tabmsgacp.acpiaorigine, tabmsgacp.acpgdh,
    tabmsgacp.acperv,  tabmsgacp.acpcdu,
    tabmsgacp.acpdir, tabmsgacp.acppere,
    tabmsgacp.acpcomplement, tabmsgacp.acpsection

FROM tabjdbexploit INNER JOIN
    tabmsgacp ON tabjdbexploit.jdbeid = tabmsgacp.acpid

ORDER BY tabjdbexploit.jdbedate ASC
$$;


All seems OK in PgAdmin 4, procedure is created

I use ODBC and Crecorset in C++

When i use the call strSQL = "{CALL procacp()}". It don't work :

Message error : ERROR: procacp() is a procedure

I don't know what to do

Thanks in advance for any assistance

Jean-Claude