// XtAppPending returns availability of events AND timers/inputs, which
// are processed via callbacks, so XtAppNextEvent will not return if
// there are no events. So added '& XtIMXEvent' - Sergey.
// XtAppPending returns availability of events AND timers/inputs, which
// are processed via callbacks, so XtAppNextEvent will not return if
// there are no events. So added '& XtIMXEvent' - Sergey.