JUCE
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ChangeListener Class Referenceabstract

Receives change event callbacks that are sent out by a ChangeBroadcaster. More...

Inheritance diagram for ChangeListener:

Public Member Functions

virtual ~ChangeListener ()=default
 Destructor. More...
 
virtual void changeListenerCallback (ChangeBroadcaster *source)=0
 Your subclass should implement this method to receive the callback. More...
 

Detailed Description

Receives change event callbacks that are sent out by a ChangeBroadcaster.

A ChangeBroadcaster keeps a set of listeners to which it broadcasts a message when the ChangeBroadcaster::sendChangeMessage() method is called. A subclass of ChangeListener is used to receive these callbacks.

Note that the major difference between an ActionListener and a ChangeListener is that for a ChangeListener, multiple changes will be coalesced into fewer callbacks, but ActionListeners perform one callback for every event posted.

See also
ChangeBroadcaster, ActionListener

Constructor & Destructor Documentation

◆ ~ChangeListener()

virtual ChangeListener::~ChangeListener ( )
virtualdefault

Destructor.

Member Function Documentation

◆ changeListenerCallback()

virtual void ChangeListener::changeListenerCallback ( ChangeBroadcaster source)
pure virtual

Your subclass should implement this method to receive the callback.

Parameters
sourcethe ChangeBroadcaster that triggered the callback.

Referenced by AudioDeviceSelectorComponent::getItemHeight(), and PluginListComponent::getOptionsButton().


The documentation for this class was generated from the following file: