tt_pattern_arg_add(library call) tt_pattern_arg_add(library call)
NAMEtt_pattern_arg_add — add an argument to a pattern
SYNOPSIS
#include <Tt/tt_c.h>
Tt_status tt_pattern_arg_add(
Tt_pattern p,
Tt_mode n,
const char *vtype,
const char *value);
DESCRIPTION
The tt_pattern_arg_add function adds an argument to a pattern. The
application must add pattern arguments before it registers the pattern
with the ToolTalk service.
The p argument is the opaque handle for the pattern 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 type ALL matches any argument value type. The value argument is
the value to fill in. This value must be an unsigned character string.
A NULL matches any value.
RETURN VALUE
Upon successful completion, the tt_pattern_arg_add function returns the
status of the operation as one of the following Tt_status values:
TT_OK The operation completed successfully.
TT_ERR_NOMP
The ttsession(1) process is not running and the ToolTalk ser‐
vice cannot restart it.
TT_ERR_POINTER
The pointer passed does not point to an object of the correct
type for this operation.
SEE ALSO
Tt/tt_c.h - Tttt_c(5), tt_pattern_register(3), tt_pattern_barg_add(3),
tt_pattern_iarg_add(3).
tt_pattern_arg_add(library call)
