说明：  VB 双语教学入门程序，此系列有详细的源码，以及控件的基本使用，调试通过，虽然简单，但是可以拿来学习VB.
(VB bilingual teaching entry procedures, in this series have detailed source, as well as the basic use of controls, debugging through, although simple, but can be used to learn VB.)