C#实现的窗体菜单改变窗口背景色源码实例，很简单的例子啦，点击菜单上的对应按钮，会改变窗口的背景色，不多介绍了，自己体验吧-C# implementation of the Form menu to change the background color of the window source code examples, it is very simple example, click the corresponding button on the menu, change the back