Translates Shell IDList Array into a filename.
The contents of the clipboard as string. Null if the clipboard is empty or on any kind of errors.
Simplified idea borrowed from http://www.eggheadcafe.com/software/aspnet/31276866/getting-path-from-a-shell.aspx reads identifier of the first item in the given list and translates it to a path name using the API function SHGetPathFromIDList(). Unlike in the example above, this function doesn't use ILCombine and ILFree but assumes, that the list items already contain a a full path.