TextInputでのアイコンの設定

package
{
	import flash.display.DisplayObject;
	
	import mx.controls.Image;
	import mx.controls.TextInput;
	import mx.core.mx_internal;
	
	use namespace mx_internal;
	
	public class MyTextInput extends TextInput
	{
		private var _image:Image;
		
		public function MyTextInput()
		{
			super();
		}
		
		override protected function createChildren():void
		{
			super.createChildren();
			
			_image = new Image();
			_image.source = "search.png";
			
			addChild(DisplayObject(_image));
		}
		
		override protected function updateDisplayList(unscaledWidth:Number, unscaledHeight:Number):void
		{
			super.updateDisplayList(unscaledWidth, unscaledHeight);
			
			this._image.width = 16;
			this._image.height = 16;
			
			this._image.x = 0;
			this._image.y = (this.height - this._image.height)/2;
			
			this.textField.x = this._image.width+2;
			this.textField.y = (this.height - this.textField.height)/2;
			this.textField.width = this.width - this._image.width-5;
			//this.setStyle("paddingLeft",this._image.width+2);
			
			
		}
	}
}

比較的簡単な実現方法ですが、ネット上ではあまり調べられません.これはやはり外網blogで調べたもので、自分で修正して、自分でmacの検索を真似たアイコンが右側にあって、左に変更しました.谁が良い解决策があって、出して研究します!!!o(∩∩)oハハハ