Key class

Availability

Flash Player 6.

Description

The Key class is a top-level class whose methods and properties you can use without using a constructor. Use the methods of the Key class to build an interface that can be controlled by a user with a standard keyboard. The properties of the Key class are constants representing the keys most commonly used to control games. For a complete list of key code values, see Keyboard Keys and Key Code Values.

Method summary for the Key class

Method	Description
`Key.addListener()`	Registers an object to receive notification when the `onKeyDown` and `onKeyUp` methods are invoked.
`Key.getAscii()`	Returns the ASCII value of the last key pressed.
`Key.getCode()`	Returns the virtual key code of the last key pressed.
`Key.isDown()`	Returns `true` if the key specified in the parameter is pressed.
`Key.isToggled()`	Returns `true` if the Num Lock or Caps Lock key is activated.
`Key.removeListener()`	Removes an object that was previously registered with `Key.addListener()`.

Property summary for the Key class

All of the properties for the Key class are constants.

Property	Description
`Key.BACKSPACE`	Constant associated with the key code value for the Backspace key (8).
`Key.CAPSLOCK`	Constant associated with the key code value for the Caps Lock key (20).
`Key.CONTROL`	Constant associated with the key code value for the Control key (17).
`Key.DELETEKEY`	Constant associated with the key code value for the Delete key (46).
`Key.DOWN`	Constant associated with the key code value for the Down Arrow key (40).
`Key.END`	Constant associated with the key code value for the End key (35).
`Key.ENTER`	Constant associated with the key code value for the Enter key (13).
`Key.ESCAPE`	Constant associated with the key code value for the Escape key (27).
`Key.HOME`	Constant associated with the key code value for the Home key (36).
`Key.INSERT`	Constant associated with the key code value for the Insert key (45).
`Key.LEFT`	Constant associated with the key code value for the Left Arrow key (37).
`Key.PGDN`	Constant associated with the key code value for the Page Down key (34).
`Key.PGUP`	Constant associated with the key code value for the Page Up key (33).
`Key.RIGHT`	Constant associated with the key code value for the Right Arrow key (39).
`Key.SHIFT`	Constant associated with the key code value for the Shift key (16).
`Key.SPACE`	Constant associated with the key code value for the Spacebar (32).
`Key.TAB`	Constant associated with the key code value for the Tab key (9).
`Key.UP`	Constant associated with the key code value for the Up Arrow key (38).

Listener summary for the Key class

Method	Description
`Key.onKeyDown`	Notified when a key is pressed.
`Key.onKeyUp`	Notified when a key is released.