Defines a cell editing event.
Defines an event in the GUI.
Defines a file event (save, open, etc.)
Defines a menu event.
Defines a mouse event in the GUI.
Defines event types. Mouse events and file events have data that can be accessed via extra fields in an inherited class. Selection uses the aux field. Text input and other value change events should be checked on the source for value changes.
Defines source types.