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## org.eclipse.swt.events
Interface KeyListener

All Superinterfaces:
  EventListener, org.eclipse.swt.internal.SWTEventListener

All Known Implementing Classes:
  AnnotationBarHoverManager.Closer, KeyAdapter, PaintManager

public interface KeyListener
extends org.eclipse.swt.internal.SWTEventListener

Classes which implement this interface provide methods that deal with the events that are generated as keys are pressed on the system keyboard.

After creating an instance of a class that implements this interface it can be added to a control using the `addKeyListener` method and removed using the `removeKeyListener` method. When a key is pressed or released, the appropriate method will be invoked.

See Also:
  `KeyAdapter`, `KeyEvent`

Method Summary
`void` | `keyPressed(KeyEvent e)` Sent when a key is pressed on the system keyboard.
`void` | `keyReleased(KeyEvent e)` Sent when a key is released on the system keyboard.

Method Detail

### keyPressed

    public void keyPressed(KeyEvent e)

  Sent when a key is pressed on the system keyboard.

  Parameters:
    `e` - an event containing information about the key press

### keyReleased

    public void keyReleased(KeyEvent e)

  Sent when a key is released on the system keyboard.

  Parameters:
    `e` - an event containing information about the key release

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Copyright (c) IBM Corp. and others 2000, 2004. All rights reserved.