Sets the root directory from which the names of extracted items are considered relative.
Synopsis
error = UnzipSetRootDir(ZipHandle, DirectoryName)
Args
ZipHandle is the handle returned by UnzipOpen.
DirectoryName is the desired directory, for example "C:\MyDir". If omitted, then the root directory is set to the current directory.
Returns
An empty string if the root directory is successfully set, or an error message if not. (If ZipErr is set to "NUM", then 0 is returned for success, or an error number).
Notes
Set the root directory after you have opened the archive with UnzipOpen, and before you set the current item with UnzipSetCurrentItem or UnzipFindItem.