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Class java.awt.event.WindowEvent
java.lang.Object
|
+----java.util.EventObject
|
+----java.awt.AWTEvent
|
+----java.awt.event.ComponentEvent
|
+----java.awt.event.WindowEvent
- 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.
- See Also:
- WindowAdapter, WindowListener, Tutorial: Writing a Window Listener, Reference: The Java Class Libraries (update file)
WINDOW_ACTIVATED- The window activated event type.
WINDOW_CLOSED- The window closed event.
WINDOW_CLOSING- The "window is closing" event.
WINDOW_DEACTIVATED- The window deactivated event type.
WINDOW_DEICONIFIED- The window deiconified event type.
WINDOW_FIRST- The first number in the range of ids used for window events.
WINDOW_ICONIFIED- The window iconified event.
WINDOW_LAST- The last number in the range of ids used for window events.
WINDOW_OPENED- The window opened event.
WindowEvent(Window, int)
- Constructs a WindowEvent object.
getWindow()
- Returns the originator of the event.
paramString()
- Returns a parameter string identifying this event.
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 selects "Quit" from the window's system menu. If
the program does not explicitly hide or destroy the window as
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 hide or
destroy.
WINDOW_ICONIFIED
public static final int WINDOW_ICONIFIED
- The window iconified event. This event indicates that the window
was shrunk down to a small icon.
WINDOW_DEICONIFIED
public static final int WINDOW_DEICONIFIED
- The window deiconified event type. This event indicates that the
window has been restored to its normal size.
WINDOW_ACTIVATED
public static final int WINDOW_ACTIVATED
- The window activated event type. This event indicates that keystrokes
and mouse clicks are directed towards this window.
WINDOW_DEACTIVATED
public static final int WINDOW_DEACTIVATED
- The window deactivated event type. This event indicates that keystrokes
and mouse clicks are no longer directed to the window.
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
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.
- Returns:
- a string identifying the event and its attributes
- Overrides:
- paramString in class ComponentEvent
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