Add a new listener that is called on KeyEvents. Every listener is
given the opportunity to consume the event, i.e. prevent the not yet
called listeners from being called.
Add a new listener that is called on MouseEvents. Every listener is
given the opportunity to consume the event, i.e. prevent the not yet
called listeners from being called.
Add a new listener that is called on KeyEvents. Every listener is
given the opportunity to consume the event, i.e. prevent the not yet
called listeners from being called.
Parameter xHandler
If this is a valid reference it is inserted into the list of
handlers. It is the task of the caller to not register the
same handler twice (otherwise that listener will be called
twice.)
Add a new listener that is called on MouseEvents. Every listener is
given the opportunity to consume the event, i.e. prevent the not yet
called listeners from being called.
Parameter xHandler
If this is a valid reference it is inserted into the list of
handlers. It is the task of the caller to not register the
same handler twice (otherwise that listener will be called
twice.)