文字输入显示手型

为什么文字不能显示手型鼠标指针?

如一下类
package {
import flash.display.Sprite;
import flash.text.TextField;
import flash.display.Graphics;
import flash.events.MouseEvent;
public class drawRect extends Sprite {
  public function drawRect() {
   var Rect:Sprite=new Sprite;
   var myString:String="Be Happy!";
   var myText:TextField=new TextField;
   myText.text=myString;
   myText.height=18;
   myText.selectable=false;
   myText.x=20;
   myText.y=40;
myText.mouseEnabled=false；
   Rect.graphics.beginFill(0xff0000);
   Rect.graphics.lineStyle(1,0,100);
   Rect.graphics.drawRect(0,0,100,100);
   Rect.addChild(myText);
   Rect.buttonMode=true;
   addChild(Rect);
   Rect.addEventListener(MouseEvent.CLICK,clickEr);
  }
  private function clickEr(event:MouseEvent) {
   trace(this.name);
  }
}
}