tt_message_arg_val(3)

tt_message_arg_val(3)  C LIBRARY FUNCTIONS  tt_message_arg_val(3)

NAME
     tt_message_arg_val	- return a pointer to the value	of a mes-
     sage argument

SYNOPSIS
     #include <Tt/tt_c.h>

     char *tt_message_arg_val(Tt_message m,
			      int n);

DESCRIPTION
     The tt_message_arg_val() function returns a pointer  to  the
     value 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_val()  func-
     tion  returns  the	 contents  for the message argument.  The
     application can use tt_ptr_error(3) to extract  one  of  the
     following Tt_status values	from the returned pointer:

	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 application can use tt_free(3)	to free	any  data  stored
     in	the address returned by	the ToolTalk API.

SEE ALSO
     Tttt_c(5),	tt_ptr_error(3), tt_free(3).

Unix System LaboratorLast change: 11 May 1994			1