Environment Variables

I'm trying to figure out how to access the environment variables. I'm working on an NT app, and I need to access some variables. I tried a piece of test code and it doesn't work. According to everything I read.. it should. Here are both variations.. any help would be appreciated
(VB 6.0 SP3, EE)

dim strSystemDrive as String
dim strSystemRoot as String

strSystemDrive = Environ(SYSTEMDRIVE)
strSystemRoot = Environ(SYSTEMROOT)

MsgBox strSystemDrive
MsgBox strSystemRoot

According to the online MSDN library online at Microsoft.. this should set strSystemDrive to C: and strSystemRoot to C:\WINNT.

I've also tried it like this:
dim strSystemDrive as String
dim strSystemRoot as String

strSystemDrive = Environ$(SYSTEMDRIVE)
strSystemRoot = Environ$(SYSTEMROOT)

MsgBox strSystemDrive
MsgBox strSystemRoot

In the first case, it complains that SYSTEMDRIVE is an undefined variable (option explicit is set). In the second case, they just appear to be empty. In both cases, if I type in (SYSTEMROOT) or (SYSTEMDRIVE) in any other case, VB converts it to upper case.

Anyone have any ideas?

Thanks,

David

You could just run the code below to see exactly what your Environemnt is:
And then dedeuce the reason for the trouble you had on the basis of what you get.

Code:

---

Dim indx As Integer
Dim EnvString As String
Dim strSize As Integer

indx = 1
msg = "Current Envoronment."
Do
  'Get environment variable.
  EnvString = Environ$(indx)

  'Check if the result is valid or a null string
  If Len(Trim(EnvString)) > 0 Then
    'Get length
    strSize = Len(EnvString)
    msg = msg & "Env " & indx & ":- " & Trim(EnvString) & vbCrLf
  End If
  indx = indx + 1
Loop Until EnvString = ""
MsgBox msg, 64, "Environment."
Clipboard.Clear
Clipboard.SetText msg, vbCFText

---

Here are the results from running on my Win95 sys:

Code:

---

Current Environment.
Env 1:- TMP=C:\WINDOWS\TEMP
Env 2:- TEMP=C:\WINDOWS\TEMP
Env 3:- PROMPT=$p$g
Env 4:- winbootdir=C:\WINDOWS
Env 5:- COMSPEC=C:\WINDOWS\COMMAND.COM
Env 6:- PATH=C:\WINDOWS;C:\WINDOWS\COMMAND;C:\PROGRA~1\SUPERC~1\BIN
Env 7:- CMDLINE=WIN
Env 8:- windir=C:\WINDOWS
Env 9:- BLASTER=A220 I5 D1 T4

---

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