ActionScript　四角を描く

package
{
    import flash.display.Sprite;

    public class Main extends Sprite
    {
        public function Main()
        {
            this.graphics.lineStyle(3, 0xFF0000);	//太さと色
            this.graphics.drawRect(10,10, 380, 280);//左上X,左上Y,幅,高さ
        }
    }
}