《网络游戏客户端编程》是一本很好的游戏编程入门教程，但书中只有示例片段，没有完整示例，给初学者带来不少麻烦。为了减少初学者的困难，我编写了与书中介绍技术配套的完整示例代码，可供初学者学习观摩。这是第二章示例。-" Online Game Client-side programming"　is a very good game programming Getting Started tutorial, but the book is only an example fragment, there is no complete example, to bring a lot of trouble to the beginner. In order to reduce the difficulties of beginners, I have prepared and introduced the technology supporting the integrity of the book sample code available for beginners to learn to observe. This is the second chapter an example.