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c#使用GDI+简单绘图
http://blog.csdn.net/smartsmile2012/article/details/30255303
NET3.5 GDI+ 图形操作1
http://www.cnblogs.com/niunan/archive/2009/04/18/1438562.html
winfrom GDI知识
原文地址:http://www.cnblogs.com/zfanlong1314/p/4264955.html