vc++和SQL Server2000实现图书管理系统，在此示例中大家可以学习到如何编写自制控件，如何在对话框程序中实现打印功能，如何通过代码来改变按键功能等等。-vc++ and SQL Server2000 realize library management system, in this example that everyone can learn how to write self-control, how to realize in the dialog process print