说明：  本人编写的MFC png按钮，人格担保完全可用，用法看源代码就知道，所以不带测试工程，支持外部png文件有问题可邮件hexun2005@sohu.com
(I prepared by the MFC png buttons, personality guarantees fully available, usage, see the source code, we know that so I do not take test engineering, support for external png files in question can e-mail hexun2005@sohu.com)