CSIDL Redirection (ASAP)

This looks like a permanent redirect unless you change it back. Not sure if admin rights are needed for this. *Probably* not if you're redirecting a user's folder.

This is classified as a "method", I'm not sure how that works in NSIS / AutoIt yet. I'll see if I can figure something out.

EDIT - that Redirect method is Vista only. I don't know how to use it yet, but the IKnownFolderManager interface (of which Redirect is a method) is Vista only.

It doesn't matter anyway. As far as I can tell, there's no way to call that Redirect method. Even in AutoIt which has COM Object support (NSIS does not), I cannot find a class to load the IKnownFolderManager interface, so the methods that it covers are unavailable. I'm sure there's a way to do it in a real programming language however.

Are your %USERPROFILE% changes permanent or temporary? We're talking temporary environment changes in this context, so that may make a difference.

AutoIt:

#include 

;*********************************************************
;* SHGetFolderPath Global Constants                             *
;* combine Global Constants using BitOR()                       *
;*********************************************************
Global Const $CSIDL_DESKTOP = 0x0000
Global Const $CSIDL_INTERNET = 0x0001
Global Const $CSIDL_PROGRAMS = 0x0002
Global Const $CSIDL_CONTROLS = 0x0003
Global Const $CSIDL_PRINTERS = 0x0004
Global Const $CSIDL_PERSONAL = 0x0005
Global Const $CSIDL_FAVORITES = 0x0006
Global Const $CSIDL_STARTUP = 0x0007
Global Const $CSIDL_RECENT = 0x0008
Global Const $CSIDL_SENDTO = 0x0009
Global Const $CSIDL_BITBUCKET = 0x000A
Global Const $CSIDL_STARTMENU = 0x000B
Global Const $CSIDL_MYDOCUMENTS = 0x000C
Global Const $CSIDL_MYMUSIC = 0x000D
Global Const $CSIDL_MYVIDEO = 0x000E
Global Const $CSIDL_DIRECTORY = 0x0010
Global Const $CSIDL_DRIVES = 0x0011
Global Const $CSIDL_NETWORK = 0x0012
Global Const $CSIDL_NETHOOD = 0x0013
Global Const $CSIDL_FONTS = 0x0014
Global Const $CSIDL_TEMPLATES = 0x0015
Global Const $CSIDL_COMMON_STARTMENU = 0x016
Global Const $CSIDL_COMMON_PROGRAMS = 0x0017
Global Const $CSIDL_COMMON_STARTUP = 0x0018
Global Const $CSIDL_COMMON_DESKTOPDIRECTORY = 0x0019
Global Const $CSIDL_APPDATA = 0x001A
Global Const $CSIDL_PRINTHOOD = 0x001B
Global Const $CSIDL_LOCAL_APPDATA = 0x001C
Global Const $CSIDL_ALTSTARTUP = 0x001D
Global Const $CSIDL_COMMON_ALTSTARTUP = 0x001E
Global Const $CSIDL_COMMON_FAVORITES = 0x001F
Global Const $CSIDL_INTERNET_CACHE = 0x0020
Global Const $CSIDL_COOKIES = 0x0021
Global Const $CSIDL_HISTORY = 0x0022
Global Const $CSIDL_COMMON_APPDATA = 0x0023
Global Const $CSIDL_WINDOWS = 0x0024
Global Const $CSIDL_SYSTEM = 0x0025
Global Const $CSIDL_PROGRAM_FILES = 0x0026
Global Const $CSIDL_MYPICTURES = 0x0027
Global Const $CSIDL_PROFILE = 0x0028
Global Const $CSIDL_SYSTEMX86 = 0x0029
Global Const $CSIDL_PROGRAM_FILESX86 = 0x002A
Global Const $CSIDL_PROGRAM_FILES_COMMON = 0x002B
Global Const $CSIDL_PROGRAM_FILES_COMMONX86 = 0x002C
Global Const $CSIDL_COMMON_TEMPLATES = 0x002D
Global Const $CSIDL_COMMON_DOCUMENTS = 0x002E
Global Const $CSIDL_COMMON_ADMINTOOLS = 0x002F
Global Const $CSIDL_ADMINTOOLS = 0x0030
Global Const $CSIDL_CONNECTIONS = 0x0031
Global Const $CSIDL_COMMON_MUSIC = 0x0035
Global Const $CSIDL_COMMON_PICTURES = 0x0036
Global Const $CSIDL_COMMON_VIDEO = 0x0037
Global Const $CSIDL_RESOURCES = 0x0038
Global Const $CSIDL_RESOURCES_LOCALIZED = 0x0039
Global Const $CSIDL_COMMON_OEM_LINKS = 0x003A
Global Const $CSIDL_CDBURN_AREA = 0x003B
Global Const $CSIDL_COMPUTERSNEARME = 0x003D

; combine with CSIDL_ value to force folder creation in SHGetFolderPath()
Global Const $CSIDL_FLAG_CREATE = 0x8000
; combine with CSIDL_ value to return an unverified folder path
Global Const $CSIDL_FLAG_DONT_VERIFY = 0x4000
; combine with CSIDL_ value to insure non-alias versions of the pidl
Global Const $CSIDL_FLAG_NO_ALIAS = 0x1000
; combine with CSIDL_ value to indicate per-user init (eg. upgrade)
Global Const $CSIDL_FLAG_PER_USER_INIT = 0x0800
; mask for all possible flag values
Global Const $CSIDL_FLAG_MASK = 0xFF00

; dwFlags values for use with SHGetFolderPath
; current value for user, verify it exists
Global Const $SHGFP_TYPE_CURRENT = 0x0000
; default value
Global Const $SHGFP_TYPE_DEFAULT = 0x0001

Func _WinAPI_SHGetFolderPath($nFolder, $dwFlags = $SHGFP_TYPE_CURRENT)
	Local $folder
	
	$folder = DllCall("shell32.dll", "int", "SHGetFolderPath", _
			"hwnd", Chr(0), _
			"int", $nFolder, _
			"ptr", Chr(0), _
			"dword", $dwFlags, _
			"str", "" _
			)
	Return $folder[5]
EndFunc

ConsoleWrite(_WinAPI_SHGetFolderPath(BitOR($CSIDL_FLAG_NO_ALIAS, $CSIDL_APPDATA)) & @CRLF)
ConsoleWrite(EnvGet("APPDATA") & @CRLF)
EnvSet("APPDATA", "C:\test")
ConsoleWrite(EnvGet("APPDATA") & @CRLF)
ConsoleWrite(_WinAPI_SHGetFolderPath(BitOR($CSIDL_FLAG_NO_ALIAS, $CSIDL_APPDATA)) & @CRLF)