Interface KeyListener

  • All Superinterfaces:
    java.util.EventListener, SWTEventListener
    All Known Implementing Classes:
    KeyAdapter

    public interface KeyListener
    extends 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 Detail

      • keyPressed

        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

        void keyReleased​(KeyEvent e)
        Sent when a key is released on the system keyboard.
        Parameters:
        e - an event containing information about the key release
      • keyPressedAdapter

        static KeyListener keyPressedAdapter​(java.util.function.Consumer<KeyEvent> c)
        Static helper method to create a KeyListener for the keyPressed(KeyEvent e)) method with a lambda expression.
        Parameters:
        c - the consumer of the event
        Returns:
        KeyListener
        Since:
        3.106
      • keyReleasedAdapter

        static KeyListener keyReleasedAdapter​(java.util.function.Consumer<KeyEvent> c)
        Static helper method to create a KeyListener for the keyReleased(KeyEvent e)) method with a lambda expression.
        Parameters:
        c - the consumer of the event
        Returns:
        KeyListener
        Since:
        3.106