一个小型的公司客户管理系统，最大的特点是实现打印快递单的功能，本人测试使用过，有定参考价值，下载看看吧-a small company customer management system, the greatest feature is the single-Print Express function, I tested using a fixed reference value, download and watch it

利用第三方库graphics.h做的钟表,可以调试运行，适合初学者学习.-The use of third-party libraries graphics.h do watch, you can run debugging, for beginners to learn.

文件是用来对窗体的打印 手表定理是指一个人有一只表时(File is used to form to print Watch theorem refers to a person when there is a table)

监控发送到打印机的文档。并输出内容到平台供参考(watch the doc that is sended to printer)