Flex自定义组件 之 使用AS3定义

package mycomp
{
  import flash.events.KeyboardEvent;
  
  import mx.controls.TextArea;

  public class MyComp2 extends TextArea
  {
    public function MyComp2()
    {
      super();
      addEventListener(KeyboardEvent.KEY_DOWN,handleKeyDown);
    }
    private function handleKeyDown(evt:KeyboardEvent):void
    {
      if(evt.ctrlKey && evt.keyCode==90)
      text="";
    }
    
  }
}

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" xmlns:MyComp="mycomp.*" layout="vertical">
  <mx:Style>
    MyComp2{fontSize:14px;}
  </mx:Style>
  <MyComp:MyComp2 id="myTxt" color="#008800" text="这是一段测试用的文本..." />
</mx:Application>

package mycomp
{
  import mx.controls.TextArea;
  import flash.events.KeyboardEvent;

   public  class TextArea extends mx.controls.TextArea
  {
     public function TextArea()
    {
      super();
      addEventListener(KeyboardEvent.KEY_DOWN,handleKeyDown);
    }
     private function handleKeyDown(evt:KeyboardEvent): void
    {
       if(evt.ctrlKey && evt.keyCode==90)
      text="";
    }
  }
}

<? xml  version ="1.0"  encoding ="utf-8" ?>
< mx:Application  xmlns:mx ="http://www.adobe.com/2006/mxml"  xmlns:MyComp ="mycomp.*"  layout ="vertical" >
   < mx:Style >
    TextArea{fontSize:14px;}
   </ mx:Style >
   < MyComp:TextArea  id ="myTxt"  color ="#008800"  text ="这是一段测试用的文本..."  />
   < mx:TextArea  text ="这是系统默认的文本框"  />
</ mx:Application >

本文转自 xcf007 51CTO博客，原文链接： http://blog.51cto.com/xcf007/102438 ，如需转载请自行联系原作者