java::awt::event::FocusAdapter Class Reference

Inheritance diagram for java::awt::event::FocusAdapter:

Inheritance graph
java::awt::event::FocusListenerjava::util::EventListenerjava::lang::Interfacejava::lang::Object
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Collaboration diagram for java::awt::event::FocusAdapter:

Collaboration graph
java::awt::event::FocusListenerjava::util::EventListenerjava::lang::Interfacejava::lang::Object
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List of all members.


Detailed Description

An abstract adapter class for receiving keyboard focus events.

The methods in this class are empty. This class exists as convenience for creating listener objects.

Extend this class to create a FocusEvent listener and override the methods for the events of interest. (If you implement the FocusListener interface, you have to define all of the methods in it. This abstract class defines null methods for them all, so you can only have to define methods for events you care about.)

Create a listener object using the extended class and then register it with a component using the component's addFocusListener method. When the component gains or loses the keyboard focus, the relevant method in the listener object is invoked, and the FocusEvent is passed to it.

See also:
FocusEvent

FocusListener

Tutorial: Writing a Focus Listener

Reference: The Java Class Libraries (update file)

Author:
Carl Quinn
Version:
1.15 01/23/03
Since:
1.1

Public Member Functions

virtual void focusGained (const FocusEvent &e)
 Invoked when a component gains the keyboard focus.
virtual void focusLost (const FocusEvent &e)
 Invoked when a component loses the keyboard focus.

Member Function Documentation

virtual void java::awt::event::FocusAdapter::focusGained ( const FocusEvent e  )  [virtual]

Invoked when a component gains the keyboard focus.

Implements java::awt::event::FocusListener.

virtual void java::awt::event::FocusAdapter::focusLost ( const FocusEvent e  )  [virtual]

Invoked when a component loses the keyboard focus.

Implements java::awt::event::FocusListener.


The documentation for this class was generated from the following file:
Generated on Fri May 16 11:56:15 2008 for CrossPlatformJavaLikeC++API by  doxygen 1.5.3