# Mouse.addListener()

#### Availability

Flash Player 6.

#### Usage

`Mouse.addListener (``newListener``)`

#### Parameters

`newListener` An object.

#### Returns

Nothing.

#### Description

Method; registers an object to receive notifications of the `onMouseDown`, `onMouseMove` and `onMouseUp` callback handlers.

The `newListener` parameter should contain an object with defined methods for the `onMouseDown`, `onMouseMove`, and `onMouseUp` listeners.

When the mouse is pressed, moved, or released, regardless of the input focus, all listening objects that are registered with this method have either their `onMouseDown` method, `onMouseMove` method or `onMouseUp` method invoked. Multiple objects may listen for mouse notifications. If the listener `newListener` is already registered, no change occurs.

#### See also

Mouse.onMouseDown, Mouse.onMouseMove, Mouse.onMouseUp