ActiveX控件是用户自己编写的控件，并能成功地注册到计算机中并被用户编写的程序所调用以实现用户定义的功能，这样可以节省代码的编写时间。VC++和MFC是用于创建ActiveX控件的强大而灵活的工具，就快速开发和使用简便而言，这两个工具是最好的选择。所以我们选用MFC来进行ActiveX控件的开发。本程序我们就来写一个简单的ActiveX控件，程序虽然简单，但是从中我们可以了解到ActiveX控件编写的整个过程。-ActiveX is prepared by the user controls, and the successful registration of the computer users were prepared by the procedure call to achieve user-defined function, it saves the time of writing code. VC and MFC is the ActiveX control used to create a powerful and flexible tool, rapid development and easy to use, the two tools is the best option. Therefore, we choose to MFC ActiveX development. The procedures we write a simple ActiveX controls, procedures simple, but we can learn from ActiveX controls prepared by the whole process.