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| 14. 80. 10. 处理JFrame事件 |
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The JFrame class supports the registration of eleven different listeners: |
- ComponentListener: To find out when the frame moves or is resized.
- ContainerListener: Normally not added to a JFrame because you add components to the content pane of its JRootPane.
- FocusListener: To find out when the frame gets or loses input focus.
- HierarchyBoundsListener: To find out when the frame moves or is resized.
- HierarchyListener: To find out when the frame is shown or hidden.
- InputMethodListener: To work with input methods for internationalization.
- MouseListener and MouseMotionListener: To listen for mouse and mouse motion events.
- PropertyChangeListener: To listen for changes to bound properties.
- WindowListener: To find out when a window is iconified, deiconified, closing, closed and so on.
- KeyListener: Normally not added to a JFrame. Instead, you register a keyboard action for its content pane, like this:
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JPanel content = (JPanel)frame.getContentPane();
KeyStroke stroke = KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0);
content.registerKeyboardAction(actionListener, stroke, JComponent.WHEN_IN_FOCUSED_WINDOW);
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