tt_message_xarg_add(3)

tt_message_xarg_add(3) C LIBRARY FUNCTIONS tt_message_xarg_add(3)

NAME
     tt_message_xarg_add  -  add  an  argument	 with	an   XDR-
     interpreted value to a message object

SYNOPSIS
     #include <Tt/tt_c.h>

     Tt_status tt_message_xarg_add(Tt_message m,
				   Tt_mode n,
				   const char *vtype,
				   xdrproc_t xdr_proc,
				   void	*value);

DESCRIPTION
     The tt_message_xarg_add() function	adds an	argument with  an
     XDR-interpreted value to a	message	object.

     To	change existing	argument values, the application must use
     only modes	TT_OUT or TT_INOUT.

     Adding arguments when replying to a message  produces  unde-
     fined results.

     The m argument is the opaque handle for the message involved
     in	 this  operation.   The	n argument specifies who (sender,
     handler, observers) writes	and  reads  a  message	argument.
     The following modes are defined:

	TT_IN	The argument is	written	by the sender and read by
		the handler and	any observers.

	TT_OUT
		The argument is	written	by the handler	and  read
		by the sender and any reply observers.

	TT_INOUT
		The argument is	written	by  the	 sender	 and  the
		handler	and read by all.

     The vtype argument	describes the type of argument data being
     added.  The xdr_proc argument points to the XDR procedure to
     be	used to	serialize the data  pointed  to	 by  value.   The
     value argument is the data	to be serialized.

RETURN VALUE
     Upon successful completion, the tt_message_xarg_add()  func-
     tion  returns the status of the operation as one of the fol-
     lowing Tt_status values:

	TT_OK	The operation completed	successfully.

	TT_ERR_MODE
		The specified Tt_mode is invalid.

Unix System LaboratorLast change: 11 May 1994			1

tt_message_xarg_add(3) C LIBRARY FUNCTIONS tt_message_xarg_add(3)

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

SEE ALSO
     Tttt_c(5);	the .

Unix System LaboratorLast change: 11 May 1994			2