protected override void OnInit()
{
this.contentPane = UIPackage.CreateObject("RenderTexture", "TestWin").asCom;
this.SetXY(200, 50);
_renderImage = new RenderImage(contentPane.GetChild("holder").asGraph);
//RenderImage是不透明的,可以设置最多两张图片作为背景图
_renderImage.SetBackground(contentPane.GetChild("frame").asCom.GetChild("n0"), contentPane.GetChild("n20"));
contentPane.GetChild("btnLeft").onTouchBegin.Add(__clickLeft);
contentPane.GetChild("btnRight").onTouchBegin.Add(__clickRight);
}