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NAME
     tt_message_arg_bval_set - set the byte-array value and  type
     of a message argument

SYNOPSIS
     #include <Tt/tt_c.h>
     Tt_status tt_message_arg_bval_set(Tt_message m,
                                       int n,
                                       const unsigned char *value,
                                       int len);

DESCRIPTION
     The tt_message_arg_bval_set() function sets  the  byte-array
     value and the type of the nth message argument.

     This function also changes the value of an existing nth mes-
     sage argument to a byte string.

     The m argument is the opaque handle for the message involved
     in  this  operation.   The  n  argument is the number of the
     argument to set.  The first argument is numbered zero.   The
     value  argument is the byte string with the contents for the
     message argument.  The len argument is  the  length  of  the
     value in bytes.

RETURN VALUE
     Upon successful  completion,  the  tt_message_arg_bval_set()
     function  returns  the status of the operation as one of the
     following Tt_status values:

        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_NUM
                The integer value  passed  was  invalid  (out  of
                range).

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

APPLICATION USAGE
     The sending process can  use  tt_message_arg_bval_set(3)  to
     fill in opaque data.

SEE ALSO
     tt_c(5), tt_message_barg_add(3), tt_message_arg_val_set(3),
     tt_message_arg_ival_set(3).

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