Similarities To and Differences From Other Mechanisms
Shadows are similar in operation to aliases in Mac OS, although there are some differences:
- Shadows in the WPS are not filesystem objects, as aliases are. They are derived from the WPAbstract class, and thus their backing storage is the user INI file, not a file in the file system. Thus shadows are invisible to applications that do not use the WPS API.
- The WPS has no mechanism for re-connecting shadows when the link between them and the target object has been broken. (Although where the link has been broken because target objects are temporarily inaccessible, restarting the WPS after the target becomes accessible once more often restores the link.)
Shadows are different from symbolic links and shortcuts because they are not filesystem objects, and because shadows are dynamically updated as target objects are moved.
Shadows are different from hard links because unlike hard links they can cross volume boundaries and because their names are always the same as those of their target objects.
Read more about this topic: Shadow (OS/2)
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