View source for Setting Environment Variables to Active Installer Process

{{PageAuthor|KiKoLo}}

== English Section ==
=== Links ===
To Download the plugin, take it from the NSIS forum at this link:

[http://forums.winamp.com/attachment.php?s=&postid=893422 setenv.rar] 

[http://forums.winamp.com/attachment.php?s=&postid=893433 setenv.zip]

=== Description ===
This page is related only to how to change variables environment to the Installer Process.
; Related to:
: [[Setting Environment Variables]] by [[user:kichik|KiCHiK]]

There are two ways that i know to change the environment variables

; The First Way:
: You can use the system.dll plugin and in the code call to de SetEnvironmentVariable on the windows kernel
; The Second Way:
: Use a custom plugin, that do this, and this is that i made. :)

=== Examples ===
You must change PATH to %PATH%;C:\MYAPP
; The First Way:
<highlight-nsis>
ReadEnvStr $R0 "PATH"
StrCpy $R0 "$R0;C:\MYAPP"
System::Call 'Kernel32::SetEnvironmentVariable(t, t) i("PATH", R0).r0'
</highlight-nsis>

; The Second Way:
<highlight-nsis>
ReadEnvStr $R0 "PATH"
StrCpy $R0 "$R0;C:\MYAPP"
SetEnv::SetEnvVar "PATH" $R0
</highlight-nsis>

== Spanish Section ==
=== Enlaces ===
Para Descargarse el plugin, cogerlo desde el foro del nsis en estos enlaces:

[http://forums.winamp.com/attachment.php?s=&postid=893422 setenv.rar] 

[http://forums.winamp.com/attachment.php?s=&postid=893433 setenv.zip]

=== DescripciÃ³n ===
Esta pÃ¡gina trata solo de como cambiar variables de entorno del proceso del instalador
; Relacionado (sÃ³lo inglÃ©s):
: [[Setting Environment Variables]] por [[user:kichik|KiCHiK]]

Hay dos maneras que yo sepa para cambiar las variables de entorno

; La Primera:
: Puedes usar el plugin system.dll y llamar a la funciÃ³n 'call' para llamar a la funciÃ³n del nucleo de Windows (kernel32) 'SetEnvironmentVariable'

; La Segunda:
: Usar un plugin personalizado, que haga esto. Y esto es lo que yo he hecho. :)

=== Ejemplos ===
Tienes que cambiar PATH a %PATH%;C:\MYAPP
; La Primera Manera:
<highlight-nsis>
ReadEnvStr $R0 "PATH"
StrCpy $R0 "$R0;C:\MYAPP"
System::Call 'Kernel32::SetEnvironmentVariableA(t, t) i("PATH", R0).r0'
</highlight-nsis>

; La Segunda Manera:
<highlight-nsis>
ReadEnvStr $R0 "PATH"
StrCpy $R0 "$R0;C:\MYAPP"
SetEnv::SetEnvVar "PATH" $R0
</highlight-nsis>

[[Category: Disk, Path & File Functions]]
[[Category: System Related Functions]]