易语言源码例程只为易语言技术探讨与交流，请不要用于非法用途。



点评：思路比较简单好理解，但是实施起来比较复杂。全API操作，非常值得学习，可以移植到其他地方使用。-Easy language source code routines only for the easy language technology research and exchanges, please do not used for illegal purposes. Review: The idea is relatively simple easy to understand, but is more complex to implement. The full API operations, very worth learning can be ported to other places.