使用Flex绘制图形：圆角矩形与填充效果

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"  layout="absolute"   width="866" height="524">
<mx:Script>
 <![CDATA[
    import flash.geom.Matrix;
   
    /*
     画图形之前必要调用的函数（其中之一即可）：
     linestyle()、beginFill()、lineGradientStyle()、beginGradientFill()、beginBitmapFill()方法来设置线条样式和/或填充。 
    */
   
    //画矩形
    private function rect(rectX:Number, rectY:Number, rectWidth:Number, rectHeight:Number):void{
     rectBoxID.graphics.clear();
     
      rectBoxID.graphics.lineStyle(1, 0x000000, 1.0, false, LineScaleMode.VERTICAL, CapsStyle.NONE, JointStyle.MITER, 100);
     
     
     rectBoxID.graphics.drawRect(rectX, rectY, rectWidth, rectHeight);
//    
    }
   
    //画圆角矩形
    private function circleRect(cRectX:Number, cRectY:Number, cRectWidth:Number, cRectHeight:Number, cRectDU:Number):void{
     cRectBoxID.graphics.clear();
     if(radioLineID.selected){    //线性
      cRectBoxID.graphics.lineStyle(20, 0xFF0000, 1.0, false, LineScaleMode.VERTICAL, CapsStyle.NONE, JointStyle.MITER, 100);
     }else if(radioGradientID.selected){    //渐变
      //the last parameter can selete three type: SpreadMethod.PAD or SpreadMethod.REFLECT or SpreadMethod.REPEAT.
      cRectBoxID.graphics.beginGradientFill(GradientType.LINEAR, [0xFF0000, 0x0000FF], [1, 0.1], [0, 255], new Matrix(), SpreadMethod.PAD);