纯代码生成按钮

package {
	import flash.display.Sprite;
	import flash.display.SimpleButton;
	public class onButton extends Sprite {
		public function onButton():void {
			init();
		}
		private function init():void {
			var a:Sprite=new Sprite();
			huitu(a,0x00ff00);
			var b:Sprite=new Sprite();
			huitu(b,0xff0000);
			var c:Sprite=new Sprite();
			huitu(c,0x0000ff);
			///
			var abc:SimpleButton=new SimpleButton(a,b,c,c);
			abc.x=abc.y=50;
			addChild(abc);
			//abc.addEventListener(MouseEvent.CLICK,abcclick)
		}
		private function huitu(obj:Sprite,col:uint):void {
			obj.graphics.beginFill(col);
			obj.graphics.drawRect(0,0,100,100);
			obj.graphics.endFill();
		}
	}
}