【AS3代码】颜色拾取器

package
{
    import flash.display.Bitmap;
    import flash.display.BitmapData;
    import flash.display.Sprite;
    import flash.events.MouseEvent;
    import flash.geom.ColorTransform;
    import flash.geom.Matrix;
    
    public class Main extends Sprite
    {
        var a:Sprite;        //用来显示拾取颜色的小方块
        var xin:BitmapData;    //存放当前新绘制出来的颜色
        
        public function Main():void
        {
            init();
        }
        
        private function init():void
        {
            //Pic是一张背景图类，在flash cs4中已经转换为swc

    var tu:Pic = new Pic(1,1);
            var tut:Bitmap = new Bitmap(tu);
            this.addChild(tut);
            
            a = new Sprite();
            a.graphics.beginFill(0x00ff00);
            a.graphics.drawRect(0,0,50,50);
            a.graphics.endFill();
            this.addChild(a);
            
            //xin是用来存放当前新绘制出来的舞台颜色
            xin = new BitmapData(1,1,false,0x0);
            stage.addEventListener(MouseEvent.MOUSE_MOVE, qu);
        }
        //用鼠标取颜色
        private function qu(evt:MouseEvent):void
        {
            xin.draw(stage, new Matrix(1,0,0,1,-mouseX,-mouseY));
            var mycolor:ColorTransform = new ColorTransform();        //存储color属性
            mycolor.color = xin.getPixel(0,0);
            a.transform.colorTransform = mycolor;
        }
    }
}