阵列中已选中as3复选框

我认为您需要(文档类):

package  {

    import fl.controls.CheckBox;
    import flash.display.Sprite;
    import flash.events.MouseEvent;
    import fl.controls.Label;

    public class Test extends Sprite {

        public var cbBox:Sprite;
        public var tfBox:Sprite;

        public function Test() {
            init();
        }

        public function init()
        {
            cbBox = new Sprite();
            cbBox.x = 10;
            addChild(cbBox);

            tfBox = new Sprite();
            tfBox.x = 200;
            addChild(tfBox);

            for (var i:uint=0; i<20; i++)
            {
                var cb:CheckBox = new CheckBox();
                cb.addEventListener(MouseEvent.CLICK, onClickHandler);
                cb.label = (i + 1).toString();
                cb.y = i* 20;
                cbBox.addChild(cb);
            }
        }

        public function onClickHandler(event:MouseEvent):void
        {
            if (tfBox.numChildren < 3)
            {
                var label:Label = new Label();
                label.width = 200;
                label.height = 20;
                label.y = tfBox.numChildren * 20;
                label.text = CheckBox(event.target).label;
                tfBox.addChild(label);
            }

            if (tfBox.numChildren == 3)
            {
                for (var i:uint = 0; i< cbBox.numChildren; i++)
                {
                    var ch:CheckBox = cbBox.getChildAt(i) as CheckBox;
                    if (!ch.selected) ch.enabled = false;
                }
            }
        }
    }
}