这是一个工具栏控件。你所做的就是在应用程序中创建按钮，用户可以用拖放方式制定工具栏，可以切换小按钮或大按钮，显示或隐藏标题-This is a toolbar controls. What you have done is in the application process to create buttons, users can drag and drop enacted toolbar, a small button switch or button to show or hide tit