juce::ChangeListener Class Reference

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

#include "juce_ChangeListener.h"

Inheritance diagram for juce::ChangeListener:

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

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

@tags{Events}

Definition at line 44 of file juce_ChangeListener.h.

Member Function Documentation

changeListenerCallback()

virtual void juce::ChangeListener::changeListenerCallback ( ChangeBroadcaster *  source )

pure virtual

Your subclass should implement this method to receive the callback.

Parameters

source

the ChangeBroadcaster that triggered the callback.

Implemented in juce::AudioDeviceSettingsPanel, and juce::KeyMappingEditorComponent::TopLevelItem.

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

• juce_events/broadcasters/juce_ChangeListener.h