说明：  可以实现对CDROM，disk的各种操作,讲述DeviceIoControl函数的各种用法，creatfile,closehandle,getdisk,IOCTL
(Can be achieved on the CDROM, disk of a variety of operations, DeviceIoControl function on a variety of usage, creatfile, closehandle, getdisk, IOCTL)