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Java 2 Platform SE v1.3.1: Class WindowEvent
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JavaTM 2 Platform
Std. Ed. v1.3.1
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java.awt.event
Class WindowEvent

java.lang.Object
  |
  +--java.util.EventObject
        |
        +--java.awt.AWTEvent
              |
              +--java.awt.event.ComponentEvent
                    |
                    +--java.awt.event.WindowEvent
All Implemented Interfaces:
Serializable
public class WindowEvent
extends ComponentEvent

A low-level event which indicates that a window has changed its status. This low-level event is generated by a Window object when it is opened, closed, about to close, activated or deactivated, iconified or deconified.

The event is passed to every WindowListener or WindowAdapter object which registered to receive such events using the window's addWindowListener method. (WindowAdapter objects implement the WindowListener interface.) Each such listener object gets this WindowEvent when the event occurs.

Since:
1.1
See Also:
WindowAdapter, WindowListener, Tutorial: Writing a Window Listener, Reference: The Java Class Libraries (update file), Serialized Form

Field Summary
static int WINDOW_ACTIVATED
          The window activated event type.
static int WINDOW_CLOSED
          The window closed event.
static int WINDOW_CLOSING
          The "window is closing" event.
static int WINDOW_DEACTIVATED
          The window deactivated event type.
static int WINDOW_DEICONIFIED
          The window deiconified event type.
static int WINDOW_FIRST
          The first number in the range of ids used for window events.
static int WINDOW_ICONIFIED
          The window iconified event.
static int WINDOW_LAST
          The last number in the range of ids used for window events.
static int WINDOW_OPENED
          The window opened event.
 
Fields inherited from class java.awt.event.ComponentEvent
COMPONENT_FIRST, COMPONENT_HIDDEN, COMPONENT_LAST, COMPONENT_MOVED, COMPONENT_RESIZED, COMPONENT_SHOWN
 
Fields inherited from class java.awt.AWTEvent
ACTION_EVENT_MASK, ADJUSTMENT_EVENT_MASK, COMPONENT_EVENT_MASK, consumed, CONTAINER_EVENT_MASK, FOCUS_EVENT_MASK, HIERARCHY_BOUNDS_EVENT_MASK, HIERARCHY_EVENT_MASK, id, INPUT_METHOD_EVENT_MASK, INVOCATION_EVENT_MASK, ITEM_EVENT_MASK, KEY_EVENT_MASK, MOUSE_EVENT_MASK, MOUSE_MOTION_EVENT_MASK, PAINT_EVENT_MASK, RESERVED_ID_MAX, TEXT_EVENT_MASK, WINDOW_EVENT_MASK
 
Fields inherited from class java.util.EventObject
source
 
Constructor Summary
WindowEvent(Window source, int id)
          Constructs a WindowEvent object.
 
Method Summary
 Window getWindow()
          Returns the originator of the event.
 String paramString()
          Returns a parameter string identifying this event.
 
Methods inherited from class java.awt.event.ComponentEvent
getComponent
 
Methods inherited from class java.awt.AWTEvent
consume, finalize, getID, isConsumed, toString
 
Methods inherited from class java.util.EventObject
getSource
 
Methods inherited from class java.lang.Object
clone, equals, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

WINDOW_FIRST

public static final int WINDOW_FIRST
The first number in the range of ids used for window events.

WINDOW_LAST

public static final int WINDOW_LAST
The last number in the range of ids used for window events.

WINDOW_OPENED

public static final int WINDOW_OPENED
The window opened event. This event is delivered only the first time a window is made visible.

WINDOW_CLOSING

public static final int WINDOW_CLOSING
The "window is closing" event. This event is delivered when the user attempts to close the window from the window's system menu. If the program does not explicitly hide or dispose the window while processing this event, the window close operation will be cancelled.

WINDOW_CLOSED

public static final int WINDOW_CLOSED
The window closed event. This event is delivered after the window has been closed as the result of a call to dispose.

WINDOW_ICONIFIED

public static final int WINDOW_ICONIFIED
The window iconified event. This event is delivered when the window has been changed from a normal to a minimized state. For many platforms, a minimized window is displayed as the icon specified in the window's iconImage property.
See Also:
Frame.setIconImage(java.awt.Image)

WINDOW_DEICONIFIED

public static final int WINDOW_DEICONIFIED
The window deiconified event type. This event is delivered when the window has been changed from a minimized to a normal state.

WINDOW_ACTIVATED

public static final int WINDOW_ACTIVATED
The window activated event type. This event is delivered when the window becomes the user's active window, which means that the window (or one of its subcomponents) will receive keyboard events.

WINDOW_DEACTIVATED

public static final int WINDOW_DEACTIVATED
The window deactivated event type. This event is delivered when a window is no longer the user's active window, which means keyboard events will no longer be delivered to the window or its subcomponents.
Constructor Detail

WindowEvent

public WindowEvent(Window source,
                   int id)
Constructs a WindowEvent object.
Parameters:
source - the Window object that originated the event
id - an integer indicating the type of event
Method Detail

getWindow

public Window getWindow()
Returns the originator of the event.
Returns:
the Window object that originated the event

paramString

public String paramString()
Returns a parameter string identifying this event. This method is useful for event-logging and for debugging.
Overrides:
paramString in class ComponentEvent
Returns:
a string identifying the event and its attributes
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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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