检测鼠标离开Movie的动作

package {
import .display.Sprite;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.ui.Mouse;

public class Test extends Sprite {

private var cursor:Sprite = new Sprite();

public function Test() {
cursor.graphics.beginFill(0xFF);
cursor.graphics.drawRect(0, 0, 25, 25);
addChild(cursor);

stage.addEventListener(Event.MOUSE_LEAVE, cursorHide);
stage.addEventListener(MouseEvent.MOUSE_MOVE, cursorFollow);
Mouse.hide();
}

public function cursorHide(evt:Event):void {
cursor.visible = false;
}

public function cursorFollow(evt:MouseEvent):void {
if (!cursor.visible) cursor.visible = true;
cursor.x = stage.mouseX;
cursor.y = stage.mouseY;
evt.updateAfterEvent();
}
}
}