专门讲述了GDI+编程中与开发自定义控件相关的功能，重点放在Windows Forms自定义控件的创建上，同时也讨论了ASP.NET服务器控件的创建问题。-GDI+ programming devoted to the development of custom controls with related functions, focusing on Windows Forms custom control creation, and also discussed the creation of ASP.NET server control problems.