tt_message_arg_mode(3)

tt_message_arg_mode(3) C LIBRARY FUNCTIONS tt_message_arg_mode(3)

NAME
     tt_message_arg_mode - return the mode of a	message	argument

SYNOPSIS
     #include <Tt/tt_c.h>

     Tt_mode tt_message_arg_mode(Tt_message m,
				 int n);

DESCRIPTION
     The tt_message_arg_mode() function	returns	the mode  of  the
     nth 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 returned.  The  first  argument  is	 numbered
     zero.

RETURN VALUE
     Upon successful completion, the tt_message_arg_mode()  func-
     tion  returns  a  value that specifies who	(sender, handler,
     observers)	writes and reads a message argument.  The follow-
     ing 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 application can use tt_int_error(3) to	 extract  one  of
     the  following  Tt_status	values	from  the Tt_mode integer
     return value:

	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.

Unix System LaboratorLast change: 11 May 1994			1

tt_message_arg_mode(3) C LIBRARY FUNCTIONS tt_message_arg_mode(3)

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

Unix System LaboratorLast change: 11 May 1994			2