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From: F1142S30%unika2@germany.CSNET (Juergen Renz)
Newsgroups: comp.os.vms
Subject: Re: Operator queries from batch
Message-ID: <8707012256.AA09835@ucbvax.Berkeley.EDU>
Date: Mon, 29-Jun-87 21:41:00 EDT
Article-I.D.: ucbvax.8707012256.AA09835
Posted: Mon Jun 29 21:41:00 1987
Date-Received: Fri, 3-Jul-87 03:23:36 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Distribution: world
Organization: The ARPA Internet
Lines: 26

Hello Bruce,

some time ago, I wrote a testprogram dealing with Mailboxes and $SNDOPR too.
Here is my suggestion solving your problem:

1. Create a Mailbox with $CREMBX and save the channel number.
2. Send the REQUEST-message using $SNDOPR and give the channel number
   as second parameter.
3. Read the REPLY-message with $QIOW ,channel,IO$_READVBLK,...
4. Take any action according to the received message.
   e.g. define a logical name using LIB$SET_LOGICAL 
        or define a DCL symbol using LIB$SET_SYMBOL.

Please refer to:
        VAX/VMS System Services Reference Manual
                PART I    INTRODUCTION TO SYSTEM SERVICES
                          Section 7.18 MAILBOXES
                PART II   SYSTEM SERVICE DESCRIPTIONS
                          $CREMBX
                          $SNDOPR
                          $QIOW

Juergen Renz                                        Universitaet Karlsruhe
Falkengarten 7                                      Institut fuer Informatik IV
7530 Pforzheim
West-Germany