tt_message_arg_xval_set(3)

NAME
     tt_message_arg_xval_set - serialize and set data into an existing message
     argument

SYNOPSIS
     #include <Tt/tt_c.h>
     Tt_status tt_message_arg_xval_set(Tt_message m,
                                       int n,
                                       xdrproc_t xdr_proc,
                                       void *value);

DESCRIPTION
     The tt_message_arg_xval_set() function serializes and sets data into an
     existing message argument.

     The m argument is the opaque handle for the message involved in this
     operation.  The n argument is the number of the argument to be changed.
     The first argument is numbered zero.  The xdr_proc argument causes
     tt_message_arg_xval_set() to serialize the data pointed to by value and
     store it as a byte string value of the nth argument of the message.  The
     value argument is the data to be serialized.

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

        TT_OK   The operation completed successfully.

        TT_ERR_MODE
                The specified Tt_mode is invalid.

        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.

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

        TT_ERR_XDR
                The XDR procedure failed on the given data, or evaluated to a
                zero-length expression.

SEE ALSO
     Tttt_c(5); the .