tt_pattern_class_add(3)

NAME
tt_pattern_class_add - add a value to the class information for a pattern

SYNOPSIS
#include <Tt/tt_c.h>

Tt_status tt_pattern_class_add(Tt_pattern p,
	Tt_class c);

DESCRIPTION
The tt_pattern_class_add() function adds a value to the class information for the specified pattern.

If the class is TT_REQUEST, the sending process expects a reply to the message.

If the class is TT_NOTICE, the sending process does not expect a reply to the message.

The p argument is a unique handle for a message pattern. This handle is returned after tt_pattern_create(3) is called. The c argument indicates whether the receiving process is to take action after the message is received. The following values are defined:

    A notice of an event. The sender does not want feedback on this message.
    A request for some action to be taken. The sender must be notified of progress, success or failure, and must receive any return values.

RETURN VALUE
Upon successful completion, the tt_pattern_class_add() function returns the status of the operation as one of the following Tt_status values:

    The operation completed successfully.
    The ttsession(1) process is not running and the ToolTalk service cannot restart it.
    The pointer passed does not point to an object of the correct type for this operation.

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