数据的压缩和解压，和数据的传输。文件夹的设置。文件的读写。-Data compression and decompression, and data transmission. Folder settings. Read and write documents.

这是COM的实现演练，压缩后分为两个文件夹EndTest和TestCom，其中EndTest为组建端，TestCom为客户端-This is the COM implementation of the exercise, compressed into two folders EndTest and TestCom, which EndTest for the formation of side, TestCom for the client