This invokes the Windows standard "directory picker" dialog box, which lets you choose a directory. Usage is:
directoryname = utils. directorypicker (title, initial)
- title - title to appear on the dialog box (eg. "Directory for backups")
- initial - initial directory - if omitted the current directory is used
All arguments are optional.
Returns nil if dialog dismissed, or the chosen directory if not.
The directory name returned will not have a trailing backslash.