addEventHandler
fun <E : Event> addEventHandler(eventType: EventType<E>, handler: EventHandler<E>, combination: HandlerCombination = HandlerCombination.AFTER)
fun <E : Event> addEventHandler(eventType: EventType<E>, combination: HandlerCombination = HandlerCombination.AFTER, handler: (E) -> Unit)
Consider using these convenience functions instead : onMousePressed, onMouseReleased, onPopupTrigger, onMouseClicked, onMouseDragged, onMouseMoved, onMouseEntered, onMouseExited, onKeyPressed, onKeyReleased.