- has-event? typeprocedure
- has-events? #!optional min-type max-typeprocedure
For has-event?, type must be an event type symbol or corresponding integer.
For has-events?, min-type and max-type specify the range of event types to consider. Events with a type outside of this range will not be considered. min-type and max-type must be event type symbols or corresponding integers. min-type defaults to 'first and max-type defaults to 'last, which means all event types match by default.