XtNoticeSignal(3X) XT FUNCTIONS XtNoticeSignal(3X)
NAME
XtNoticeSignal - register and remove a signal source
SYNTAX
void XtNoticeSignal(id)
XtSignalId id)
ARGUMENTS
id Specifies the ID returned from the corresponding XtAppAddSignal call.
DESCRIPTION
XtNoticeSignal is the only Intrinsics function that can safely be called from a signal handler. If XtNoticeSignal is called multiple times
before the Intrinsics are able to invoke the registered callback, the callback is only called once. Logically the Intrinsics maintain pend-
ing for each registered callback. This flag is initially False and is set to True by XtNoticeSignal; the Intrinsics invoke the callback
whenever the flag is True, and the flag is set to False just before the callback is invoked.
SEE ALSO
XtAppAddSignal(3X), XtRemoveSignal(3X)
X Version 11 Release 6 XtNoticeSignal(3X)
