http://msdn2.microsoft.com/zh-cn/library/53tyfkaw(VS.80).aspx
http://blog.joycode.com/ghj/archive/2006/02/12/71378.aspx
http://tainys.blog.163.com/blog/static/148060972007823105022321/
http://blog.joycode.com/ghj/archive/2006/02/12/71378.aspx
http://tainys.blog.163.com/blog/static/148060972007823105022321/