starling 中如何使用htmltext

function showHtmlText(errorMsg:String):void
{
var fmt:TextFormat = new TextFormat();
fmt.color = 0xffffff;
fmt.size = 16;
fmt.font = "微软雅黑";

var tf: TextField = new TextField();
tf.multiline = true;
tf.width = 280;
tf.height = 120

tf.antiAliasType = flash.text.AntiAliasType.ADVANCED

tf.htmlText = errorMsg;

var bmd:BitmapData=new BitmapData(tf.width,tf.height,true,0);

bmd.draw(tf);

var tfImg:Image = new Image(Texture.fromBitmapData(bmd,false));

tfImg.x = 25;
tfImg.y = 40;
this.addChild(tfImg);
}