(require mzlib/sendevent)

The mzlib/sendevent library provides a send-event function that works only on Mac OS X, and only when running in MrEd (though the library can be loaded in MzScheme).

(send-event   receiver-bytes             event-class-bytes             event-id-bytes            [ direct-arg-v             argument-list])   →   any/c

receiver-bytes   :   (lambda (s) (and (bytes? s)                  (= 4 (bytes-length s))))

event-class-bytes   :   (lambda (s) (and (bytes? s)                  (= 4 (bytes-length s))))

event-id-bytes   :   (lambda (s) (and (bytes? s)                  (= 4 (bytes-length s))))

direct-arg-v : any/c = (void)

argument-list : list? = null

Calls send-event scheme/gui/base, if available, otherwise raises exn:fail:unsupported.