eventspace-shutdown? in Eventspaces
Returns #t if the given eventspace has been shut down by its
custodian, #f otherwise. Attempting to create a new window,
timer, or explicitly queued event in a shut-down eventspace raises
the exn:misc exception.
Attempting to use certain methods of windows and timers in a shut-down
eventspace also raises the exn:misc exception, but the
get-top-level-window in area<%> and
get-eventspace in top-level-window<%> methods work even after the area's eventspace is shut down.