winapi - ULIB.dll -- Any API documentation? How do you use it? -

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a little peeking @ disassembly of tree.com (the command shows directory tree given folder) shows functionality lies in ulib.dll, same file system library used chkdsk.exe.

which pretty funny, considering enumerating directory tree should pretty straightforward findfirstfile , findnextfile...

so here come 2 questions:

  1. why tree.com use ulib.dll (seemingly) trivial? why not use standard traversal methods?
  2. is there any documentation whatsoever (official or unofficial) on api of library? thing i've found this api listing, there more?

because has version of findfirstfile declared as:

 void* __stdcall findfirstfilew(class path const *, struct _win32_find_dataw *)

why use c api when you've got nice c++ implementation lying around. internal microsoft library, not documented.


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