Flash / Flex / ActionScript/Graphics/Checkbox

Removing Event Listeners

   <source lang="java">

package {

 import flash.display.*;
 import flash.events.*;
 import flash.text.*;
 public class CheckBox extends Sprite {
   private var label:TextField;    // The checkbox"s text label
   private var icon:CheckBoxIcon;  // The checkbox"s graphical icon
   private var checked:Boolean;    // Flag indicating whether the
                                   // checkbox is currently checked
   public function CheckBox (msg:String) {
     checked = false;
     icon = new CheckBoxIcon(  );
     label = new TextField(  );
     label.text = msg;
     label.autoSize = TextFieldAutoSize.LEFT;
     label.selectable = false;
     label.x = icon.x + icon.width + 5;
     addChild(icon);
     addChild(label);
     addEventListener(MouseEvent.CLICK, clickListener);
   }
   private function clickListener (e:MouseEvent):void {
       if (checked) {
           icon.uncheck(  );
           checked = false;
       } else {
           icon.check(  );
           checked = true;
       }
   }
 }

} class CheckBoxIcon extends flash.display.Sprite {

   public function CheckBoxIcon (  ) {
     uncheck(  );
   }
   public function check (  ):void {
     graphics.clear(  );
     graphics.lineStyle(1);
     graphics.beginFill(0xFFFFFF);
     graphics.drawRect(0, 0, 15, 15);
     graphics.endFill(  );
     graphics.lineTo(15, 15);
     graphics.moveTo(0, 15);
     graphics.lineTo(15, 0);
   }
   public function uncheck (  ):void {
     graphics.clear(  );
     graphics.lineStyle(1);
     graphics.beginFill(0xFFFFFF);
     graphics.drawRect(0, 0, 15, 15);
   }
 }

}

       </source>