Unicode-aware file shortcuts in Windows

[Stanislaw Findeisen]

Does anyone know how to create file shortcuts in Windows?

The only way I know is like:

---------------------------------------------------------------

import win32com.client

wScriptShellObj ect = win32com.client .Dispatch("WScr ipt.Shell")
shortcutName = unicode("shortc ut.lnk", "utf8")
shortcut = wScriptShellObj ect.CreateShort cut(shortcutNam e)
shortcut.Target Path = <FULL PATH TO TARGET FILE>
shortcut.Save()

---------------------------------------------------------------

Unfortunately, this causes problems with Unicode characters:

(1) If there are Unicode characters in target file name, not all of them
get correctly copied to the shortcut's "target" attribute, thus
producing an invalid shortcut.

(2) If there are Unicode characters in shortcut name, not all of them
get correctly copied, thus producing a shortcut with a name different
than desired.

(3) If there are Unicode characters somewhere in the path to the
shortcut itself (above the shortcut name component), then they also get
corrupted, which effects in an invalid (non-existent) path and errors
like this one:

---------------------------------------------------------------

E:\Documents and Settings\Stasze k\Progs\Python-Windows\test_1> cf.py
Traceback (most recent call last):
File "E:\Documen ts and
Settings\Stasze k\Progs\Python-Windows\test_1\ cf.py", line 7, in ?
shortcut.Save()
File "<COMObject <unknown>>", line 2, in Save
pywintypes.com_ error: (-2147352567, 'Exception occurred.', (0,
'WshShortcut.Sa ve', 'Unable to save shortcut "E:\\Docume nts and
Settings\\Stasz ek\\Progs\\Pyth on-Windows\\test_1 \\Te\x9a\xed me c\xfd
z\xf3lazcseL\\l ink do vecer Z\xd3LAKe e\x9a\xed bla.lnk".', None, 0,
-2147024893), None)

---------------------------------------------------------------

The original path to shortcut file referenced in error description above
contains Polish and Czech characters, and it was:

---------------------------------------------------------------

E:\Documents and Settings\Stasze k\Progs\Python-Windows\test_1\ Těšà mě čý
Å¼Ã³Å‚Ä…ÅºÄ‡Å›Ä ™Å\link do večer ŻÓŁĄKÄ™ ěšà bla.lnk

---------------------------------------------------------------

As it can be seen, some of those national characters in the error
description string are escaped using the \x.. sequence, while others are
simply "flatten" (like first "e" in "Te\x9a\xed ", or "lazcse").

So it seems as if WScript.Shell object in Python didn't fully support
Unicode?... Or perhaps it does, but one has to know how to activate it.

Any help would be appreciated.

I am using standard Windows console cmd.exe in Windows 2000, Python 2.4,
and Mark Hammond's Python for Windows Extensions build 204.

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http://www.nglogic.com

Enter through the narrow gate! (Mt 7:13-14)

[Neil Hodgson]

Re: Unicode-aware file shortcuts in Windows

Stanislaw Findeisen:
[color=blue]
> E:\Documents and Settings\Stasze k\Progs\Python-Windows\test_1> cf.py
> Traceback (most recent call last):
> File "E:\Documen ts and
> Settings\Stasze k\Progs\Python-Windows\test_1\ cf.py", line 7, in ?
> shortcut.Save()
> File "<COMObject <unknown>>", line 2, in Save
> pywintypes.com_ error: (-2147352567, 'Exception occurred.', (0,
> 'WshShortcut.Sa ve', 'Unable to save shortcut "E:\\Docume nts and
> Settings\\Stasz ek\\Progs\\Pyth on-Windows\\test_1 \\Te\x9a\xed me c\xfd
> z\xf3lazcseL\\l ink do vecer Z\xd3LAKe e\x9a\xed bla.lnk".', None, 0,
> -2147024893), None)[/color]

I see similar problems using WSH so I think the problem is in
WScript.Shell, rather than in Python's access to COM. Slightly
simplified and with the directory created:

<package>
<job id="js">
<script language="JScri pt">
WScript.Echo("S tart")
var WshShell = WScript.CreateO bject("WScript. Shell");
var oShellLink = WshShell.Create Shortcut("C:\\T ěšà mě čý
Å¼Ã³Å‚Ä…ÅºÄ‡Å›Ä ™Å\\link do večer ŻÓŁĄKÄ™ ěšà bla.lnk");
oShellLink.Targ etPath = "c:\\bin\\bb.ap i";
oShellLink.Save ();
WScript.Echo("E nd")
</script>
</job>
</package>

C:\bin>cscript ul.wsf
Microsoft (R) Windows Script Host Version 5.6
Copyright (C) Microsoft Corporation 1996-2001. All rights reserved.

Start
C:\bin\ul.wsf(9 , 11) WshShortcut.Sav e: Unable to save shortcut "C:\TeÅ¡Ã
me cý zólazcseL\link do vecer ZÓLAKe ešà bla.lnk".


C:\bin>dir c:\T*
Volume in drive C has no label.
Volume Serial Number is A04B-224D

Directory of c:\

02/06/2005 10:30 PM 67 test.py
17/09/2005 09:56 AM <DIR> Těšà mÄ› čý Å¼Ã³Å‚Ä…ÅºÄ‡Å›Ä ™Å
1 File(s) 67 bytes
1 Dir(s) 7,014,309,888 bytes free

C:\bin>dir "c:\Těšà mÄ› čý Å¼Ã³Å‚Ä…ÅºÄ‡Å›Ä ™Å"
Volume in drive C has no label.
Volume Serial Number is A04B-224D

Directory of c:\Těšà mÄ› čý Å¼Ã³Å‚Ä…ÅºÄ‡Å›Ä ™Å

17/09/2005 09:56 AM <DIR> .
17/09/2005 09:56 AM <DIR> ..
0 File(s) 0 bytes
2 Dir(s) 7,014,309,888 bytes free

C:\bin>

Happy googling.

Neil

[John Bauman]

Re: Unicode-aware file shortcuts in Windows


"Stanislaw Findeisen" <my_initials@ng logic.com> wrote in message
news:dgfjg8$j0n $1@achot.icm.ed u.pl...[color=blue]
> Does anyone know how to create file shortcuts in Windows?
>
> The only way I know is like:
>
> ---------------------------------------------------------------
>
> import win32com.client
>
> wScriptShellObj ect = win32com.client .Dispatch("WScr ipt.Shell")
> shortcutName = unicode("shortc ut.lnk", "utf8")
> shortcut = wScriptShellObj ect.CreateShort cut(shortcutNam e)
> shortcut.Target Path = <FULL PATH TO TARGET FILE>
> shortcut.Save()
>
> ---------------------------------------------------------------[/color]

I see that another way is available here:
http://msdn.microsoft.com/library/de...s/shortcut.asp
I haven't tried, and I don't have the knowledge to convert the C++ to
Python, but it works at a lower level and may get around the bugs. It does
seem that the name of the file isn't Unicode in their method, either, so I'm
not sure if it'll work.

[Martin v. Löwis]

Re: Unicode-aware file shortcuts in Windows

John Bauman wrote:[color=blue]
> I see that another way is available here:
> http://msdn.microsoft.com/library/de...s/shortcut.asp
> I haven't tried, and I don't have the knowledge to convert the C++ to
> Python, but it works at a lower level and may get around the bugs. It does
> seem that the name of the file isn't Unicode in their method, either, so I'm
> not sure if it'll work.[/color]

There are two versions of the IShellLink interface: IShellLinkA and
IShellLinkW. You need to use the *W version to pass characters outside
the ANSI code page.

Regards,
Martin