tt_otype_hsig_arg_mode(3) ToolTalk Functions tt_otype_hsig_arg_mode(3)NAMEtt_otype_hsig_arg_mode - return the mode of an argument of a request
signature of an otype
SYNOPSIS
#include <Tt/tt_c.h>
Tt_mode tt_otype_hsig_arg_mode(const char *otype,
int sig,
int arg);
DESCRIPTION
The tt_otype_hsig_arg_mode() function returns the mode of the argth
argument of the sigth request signature of the given otype.
The otype argument is the object type involved in this operation. The
sig argument is the zero-based index into the request signatures of the
specified otype. The arg argument is the zero-based index into the
arguments of the specified signature.
RETURN VALUE
Upon successful completion, the tt_otype_hsig_arg_mode() function
returns a value that determines who (sender or handler) writes and
reads a message argument. The following modes are defined:
TT_IN The argument is written by the sender and read by the han‐
dler 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_OTYPE
The specified object type is not the name of an installed
object type.
SEE ALSOtt_c(5), tt_otype_hsig_arg_type(3), tt_otype_hsig_count(3),
tt_otype_hsig_args_count(3), tt_otype_hsig_op(3), tt_int_error(3).
ToolTalk 1.3 1 March 1996 tt_otype_hsig_arg_mode(3)
