说明：  该实例介绍了在C#中如何进行GDI编程，通过该实例可以让读者对C#中GDI编程有一个初步了解。 注：该源码系引用他人
(the examples in C# how GDI programming, through which readers can be examples for C# programming GDI is a preliminary understanding. Note : The source is quoted others)