tt_message_opnum(library call) tt_message_opnum(library call)
NAMEtt_message_opnum — retrieve the operation number attribute from a mes‐
sage
SYNOPSIS
#include <Tt/tt_c.h>
int tt_message_opnum(
Tt_message m);
DESCRIPTION
The tt_message_opnum function retrieves the operation number attribute
from the specified message.
The m argument is the opaque handle for the message involved in this
operation.
RETURN VALUE
Upon successful completion, the tt_message_opnum function returns the
number of the operation involved in this message. The application can
use tt_int_error(3) to extract one of the following Tt_status values
from the returned integer:
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_int_error(3).
tt_message_opnum(library call)