自己写的一些使用函数库，用于实现延时、加载资源文件、获取磁盘空间、关闭计算机、执行外部进程、转换文字编码、处理图像的颜色和灰度等等。-Some use to write their own libraries for the realization of delay, loading resource documents, access to disk space, shut down your computer, the implementation of the external process, converting text encoding, dealing with the color and grayscale images and so on.