此程序为WINDOWS编程的一个实现，是控件类的一个实例-This program is a WINDOWS program implementation is an instance of the control class

通过本程序详细讲解了TAB控件，对tab分页进行了了实例说明，有助于理解windows中MFC界面编程。-the codes is about TAB,and how to use it.it is helpful for UI of MFC.

本程序在VB.NET下实现Windows壁纸的自动替换功能，它可以每隔几分钟换一张桌面背景图片。另外，程序还涉及了如何转换一个图片到BMP格式的功能。-The program is implemented in VB.NET the Windows wallpaper automatically replace it every few minutes for a desktop background pictures. In addition, the program also involve