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Open Client Client-Library/C Reference Manual

Chapter 2 Topics

Callbacks

Server message callbacks

Server message callback example

This is an example of a server message callback:

          /*

           ** ex_servermsg_cb()

           **

           ** Type of function:

           **      Example program server message handler

           **

           ** Purpose:

           **      Installed as a callback into Open Client.

           ** 

           ** Returns:

           **      CS_SUCCEED

           **

           ** Side Effects:

           **      None

           */

           CS_RETCODE CS_PUBLIC

           ex_servermsg_cb(context, connection, srvmsg)

           CS_CONTEXT        *connection;

           CS_CONNECTION     *cmd;

           CS_SERVERMSG      *srvmsg;

           {

                fprintf(EX_ERROR_OUT, "\nServer message:\n");

                fprintf(EX_ERROR_OUT, "Message number: %ld, \ 

                     Severity %ld, ", srvmsg->msgnumber, 

                     srvmsg->severity);

                fprintf(EX_ERROR_OUT, "State %ld, Line %ld",

                     srvmsg->state, srvmsg->line);

               if (srvmsg->svrnlen > 0)

                {

                     fprintf(EX_ERROR_OUT, "\nServer '%s'", 

                          srvmsg->svrname);

                }

               if (srvmsg->proclen > 0)

                {

                     fprintf(EX_ERROR_OUT, " Procedure '%s'", 

                          srvmsg->proc);

                }

               fprintf(EX_ERROR_OUT, "\nMessage String: %s",

                     srvmsg->text);

               return CS_SUCCEED;

           }