common-lisp:standard-object, common-lisp:t

gdk:button-event, gdk:crossing-event, gdk:delete-event, gdk:dnd-event, gdk:focus-event, gdk:grab-broken-event, gdk:key-event, gdk:motion-event, gdk:pad-event, gdk:proximity-event, gdk:scroll-event, gdk:touch-event, gdk:touchpad-event

The base type of an event. In GTK applications the events are handled automatically by toplevel widgets and passed on to the event controllers of appropriate widgets, so these functions are rarely needed.