http://blog.csdn.net/kasama1953/article/details/52133713

http://blog.csdn.net/wszhoho/article/details/7107693

c#怎么监听程序窗体外的鼠标点击事件啊？

http://bbs.csdn.net/topics/390902685

c# winform QQ表情例子 附完整源码

http://www.haolizi.net/example/view_693.html

动态VPN

http://ip.zdaye.com/ActiveVPN.html

http://blog.csdn.net/educast/article/details/6981562