MATLAB Object-Oriented Programming

Events and Listeners Syntax

In this section...

“Components to Implement” on page 11-22

“Name Events” on page 11-22

“Trigger Events” on page 11-23

“Listen to Events” on page 11-23

“Define Event-Specific Data” on page 11-26

Components to Implement

Implementation of events and listeners involves these components:

• Specification of the name of an event in a handle class — “Name Events” on page 11-
  22.


• A function or method to trigger the event when the action occurs — “Trigger Events”
  on page 11-23.


• Listener objects to execute callback functions in response to the triggered event —
  “Listen to Events” on page 11-23.


• Default or custom event data that the event passes to the callback functions — “Define
  Event-Specific Data” on page 11-26.

Name Events

Define an event by declaring an event name inside an events block. For example, this

class creates an event called ToggledState:

classdef ToggleButton < handle

properties

State = false

end

events

ToggledState

end

end

11 Events — Sending and Responding to Messages