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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 mes-
     sage.  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
     tt_c(5), tt_int_error(3).

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