a pointer to the Atspi.DeviceListener for which keystroke events are requested.
a pointer to the Atspi.KeyDefinition array indicating which keystroke events are requested, or null to indicate that all keycodes and keyvals for the specified modifier set are to be included.
the key modifier mask for which this listener is to be 'deregistered' (of type Atspi.KeyMaskType).
an Atspi.KeyMaskType mask indicating which types of key events were requested (Atspi.KeyEventType.PRESSED, etc.).
true if successful, otherwise false.
Removes a keystroke event listener from the registry's listener queue, ceasing notification of events with modifiers matching
modmask.