[izpack-users] set an environment variable?

Klaus Bartz bartzkau at gmx.net
Wed Mar 8 10:13:00 CET 2006

Hi Darren,
often the env var setting via .bat will work good, but not always.
Only the processes which are started under the bat will known the
If we speak about Windows NT, 2k, XP, 2003 there is a secound way to
set env vars. Windows stores them in the registry, for User-vars at
for System-vars at
HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment
You can write there with the registry stuff of IzPack. But please
carefully, e.g. do not overwrite the env var PATH :-)
Unfortunately env vars are not read from registry every time. Therefore  
changes will are valid only after a logout/login sequence (or reebott).  
does not send a windows broadcast message which will be an alternative.



Am 07.03.2006, 22:31 Uhr, schrieb Darren Govoni <darren at ontrenet.com>:

> Hi Hal,
>     Thanks for the always speedy response! Much appreciated. After the  
> install is when I'd
> like to set it. Your suggestion is a good one, so I will try it.
> Cheers!
> Darren
> Hal Vaughan wrote:
>> On Tuesday 07 March 2006 16:07, Darren Govoni wrote:
>>> Hey everyone,
>>>     Was wondering if I can "set" an environment variable during
>>> installation? on Windows.
>> You can use a .bat file to set it and declare the file as an executable  
>> so it will be run by the ProcessPanel.  You can also use a parsed  
>> variable in the .bat file so the value could be set in a UserInputPanel  
>> or in a custom panel you make.
>> Did you need to set it for use after the install, or during the install?
>> Hal
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