tt_message_opnum(3)

NAME
     tt_message_opnum - retrieve the operation number attribute from a message

SYNOPSIS
     #include <Tt/tt_c.h>
     int tt_message_opnum(Tt_message m);

DESCRIPTION
     The tt_message_opnum() function retrieves the operation number attribute
     from the specified message.

     The m argument is the opaque handle for the message involved in this
     operation.

RETURN VALUE
     Upon successful completion, the tt_message_opnum() function returns the
     number of the operation involved in this message.  The application can
     use tt_int_error(3) to extract one of the following Tt_status values from
     the returned integer:

        TT_OK   The operation completed successfully.

        TT_ERR_NOMP
                The ttsession(1) process is not running and the ToolTalk
                service cannot restart it.

        TT_ERR_POINTER
                The pointer passed does not point to an object of the correct
                type for this operation.

SEE ALSO
     Tttt_c(5), tt_int_error(3).