as3中怎么设置嵌入字体

as3中如何设置嵌入字体
代码如下

public static function setEmbedFontsTextFormat(size:Object, color:Object,bold:Object,font:String = EMBEDED_FONT_NAME):TextFormat{var textFormat:TextFormat = new TextFormat();textFormat.size = size;textFormat.bold = bold;textFormat.color = color;var c:Class = getDefinitionByName(font) as Class;//来自字体库,嵌入字体Font.registerFont(c);var myFont:Font = new c as Font;textFormat.font = myFont.fontName;return textFormat;}