jdk.awt.event.ComponentEvent
A low-level event which indicates that a component moved, changed size, or changed visibility (also, the root class for the other component-level events).
Component events are provided for notification purposes ONLY; The AWT will automatically handle component moves and resizes internally so that GUI layout works properly regardless of whether a program is receiving these events or not.
In addition to serving as the base class for other component-related events (InputEvent, FocusEvent, WindowEvent, ContainerEvent), this class defines the events that indicate changes in a component's size, position, or visibility.
This low-level event is generated by a component object (such as a List) when the component is moved, resized, rendered invisible, or made visible again. The event is passed to every ComponentListener or ComponentAdapter object which registered to receive such events using the component's addComponentListener method. (ComponentAdapter objects implement the ComponentListener interface.) Each such listener object gets this ComponentEvent when the event occurs.
An unspecified behavior will be caused if the id parameter of any particular ComponentEvent instance is not in the range from COMPONENT_FIRST to COMPONENT_LAST.
A low-level event which indicates that a component moved, changed size, or changed visibility (also, the root class for the other component-level events). Component events are provided for notification purposes ONLY; The AWT will automatically handle component moves and resizes internally so that GUI layout works properly regardless of whether a program is receiving these events or not. In addition to serving as the base class for other component-related events (InputEvent, FocusEvent, WindowEvent, ContainerEvent), this class defines the events that indicate changes in a component's size, position, or visibility. This low-level event is generated by a component object (such as a List) when the component is moved, resized, rendered invisible, or made visible again. The event is passed to every ComponentListener or ComponentAdapter object which registered to receive such events using the component's addComponentListener method. (ComponentAdapter objects implement the ComponentListener interface.) Each such listener object gets this ComponentEvent when the event occurs. An unspecified behavior will be caused if the id parameter of any particular ComponentEvent instance is not in the range from COMPONENT_FIRST to COMPONENT_LAST.
*-component-firstclj
Static Constant.
The first number in the range of ids used for component events.
type: int
Static Constant. The first number in the range of ids used for component events. type: int
*-component-hiddenclj
Static Constant.
This event indicates that the component was rendered invisible.
type: int
Static Constant. This event indicates that the component was rendered invisible. type: int
*-component-lastclj
Static Constant.
The last number in the range of ids used for component events.
type: int
Static Constant. The last number in the range of ids used for component events. type: int
*-component-movedclj
Static Constant.
This event indicates that the component's position changed.
type: int
Static Constant. This event indicates that the component's position changed. type: int
*-component-resizedclj
Static Constant.
This event indicates that the component's size changed.
type: int
Static Constant. This event indicates that the component's size changed. type: int
*-component-shownclj
Static Constant.
This event indicates that the component was made visible.
type: int
Static Constant. This event indicates that the component was made visible. type: int
->component-eventclj
(->component-event source id)Constructor.
Constructs a ComponentEvent object. This method throws an IllegalArgumentException if source is null.
source - The Component that originated the event - java.awt.Component
id - An integer indicating the type of event. For information on allowable values, see the class description for ComponentEvent - int
throws: java.lang.IllegalArgumentException - if source is null
Constructor. Constructs a ComponentEvent object. This method throws an IllegalArgumentException if source is null. source - The Component that originated the event - `java.awt.Component` id - An integer indicating the type of event. For information on allowable values, see the class description for ComponentEvent - `int` throws: java.lang.IllegalArgumentException - if source is null
get-componentclj
(get-component this)Returns the originator of the event.
returns: the Component object that originated
the event, or null if the object is not a
Component. - java.awt.Component
Returns the originator of the event. returns: the Component object that originated the event, or null if the object is not a Component. - `java.awt.Component`
param-stringclj
(param-string this)Returns a parameter string identifying this event. This method is useful for event-logging and for debugging.
returns: a string identifying the event and its attributes - java.lang.String
Returns a parameter string identifying this event. This method is useful for event-logging and for debugging. returns: a string identifying the event and its attributes - `java.lang.String`
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