Setting Environment Variables Examples - Revision history

Anders: A/W fix

2021-01-14T22:56:02Z

A/W fix

â† Older revision		Revision as of 22:56, 14 January 2021
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	messagebox mb_ok '$R0'		messagebox mb_ok '$R0'
	StrCpy $R0 "$R0;${JAVA_HOME};${APP_HOME}"		StrCpy $R0 "$R0;${JAVA_HOME};${APP_HOME}"
	System::Call '~~Kernel32~~::~~SetEnvironmentVariableA~~(t~~, t) i(~~"PATH", R0).r2'		System::Call 'KERNEL32::SetEnvironmentVariable(t "PATH", t R0)i.r2'
	ReadEnvStr $R0 "PATH"		ReadEnvStr $R0 "PATH"
	messagebox mb_ok '$R0'		messagebox mb_ok '$R0'
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	;or just this		;or just this
	;StrCpy $R0 "$R0;${JAVA_HOME};${APP_HOME}"		;StrCpy $R0 "$R0;${JAVA_HOME};${APP_HOME}"
	System::Call 'Kernel32::~~SetEnvironmentVariableA~~(t~~, t) i(~~"PATH", R0).r2'		System::Call 'Kernel32::SetEnvironmentVariable(t "PATH", t R0)i.r2'
	ReadEnvStr $R0 "PATH"		ReadEnvStr $R0 "PATH"
	messagebox mb_ok '$R0'		messagebox mb_ok '$R0'

115.113.84.62: /* The Code */

2011-08-22T11:29:14Z

The Code

â† Older revision		Revision as of 11:29, 22 August 2011
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	If you want to set an environment variable only for the installer process and its sub-processes use:		If you want to set an environment variable only for the installer process and its sub-processes use:
	<highlight-nsis>		<highlight-nsis>
	!define JAVA_HOME "d:\JDK1.51"		!define JAVA_HOME "d:\JDK1.6"
	!define APP_HOME "d:\application"		!define APP_HOME "d:\application"

115.113.84.62: /* The Code */

2011-08-22T11:28:19Z

The Code

â† Older revision		Revision as of 11:28, 22 August 2011
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	If you want to set an environment variable only for the installer process and its sub-processes use:		If you want to set an environment variable only for the installer process and its sub-processes use:
	<highlight-nsis>		<highlight-nsis>
	!define JAVA_HOME "d:\JDK1.5"		!define JAVA_HOME "d:\JDK1.51"
	!define APP_HOME "d:\application"		!define APP_HOME "d:\application"

203.196.147.210: /* */

2010-03-03T13:22:39Z

â† Older revision		Revision as of 13:22, 3 March 2010
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	{{PageAuthor\|Red Wine}}		{{PageAuthor\|Red Wine}}
	== ==		== Description ==
	The following examples about setting environment variables are based on [[Setting Environment Variables]] by [[user:kichik\|KiCHiK]] and provided for the subject [http://forums.winamp.com/showthread.php?s=&postid=2084244 on this forum thread].<BR>		The following examples about setting environment variables are based on [[Setting Environment Variables]] by [[user:kichik\|KiCHiK]] and provided for the subject [http://forums.winamp.com/showthread.php?s=&postid=2084244 on this forum thread].<BR>
	Requires [[user:kichik\|KiCHiK]]'s [http://nsis.sourceforge.net/Setting_Environment_Variables WriteEnvStr.nsh].<BR>		Requires [[user:kichik\|KiCHiK]]'s [http://nsis.sourceforge.net/Setting_Environment_Variables WriteEnvStr.nsh].<BR>

203.196.147.210: /* Description */

2010-03-03T13:21:58Z

Description

â† Older revision		Revision as of 13:21, 3 March 2010
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	{{PageAuthor\|Red Wine}}		{{PageAuthor\|Red Wine}}
	== ~~Description~~ ==		== ==
	The following examples about setting environment variables are based on [[Setting Environment Variables]] by [[user:kichik\|KiCHiK]] and provided for the subject [http://forums.winamp.com/showthread.php?s=&postid=2084244 on this forum thread].<BR>		The following examples about setting environment variables are based on [[Setting Environment Variables]] by [[user:kichik\|KiCHiK]] and provided for the subject [http://forums.winamp.com/showthread.php?s=&postid=2084244 on this forum thread].<BR>
	Requires [[user:kichik\|KiCHiK]]'s [http://nsis.sourceforge.net/Setting_Environment_Variables WriteEnvStr.nsh].<BR>		Requires [[user:kichik\|KiCHiK]]'s [http://nsis.sourceforge.net/Setting_Environment_Variables WriteEnvStr.nsh].<BR>

Red Wine at 05:45, 17 January 2007

2007-01-17T05:45:24Z

â† Older revision		Revision as of 05:45, 17 January 2007
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	</highlight-nsis>		</highlight-nsis>

			== License ==

			This function is provided 'as-is', without any express or implied
			warranty. In no event will the author be held liable for any damages
			arising from the use of this function.

			Permission is granted to anyone to use this function for any purpose,
			including commercial applications, and to alter it and redistribute
			it freely.

	[[Category:Code Examples]]		[[Category:Code Examples]]

Red Wine at 00:42, 19 December 2006

2006-12-19T00:42:33Z

New page

{{PageAuthor|Red Wine}}
== Description ==
The following examples about setting environment variables are based on [[Setting Environment Variables]] by [[user:kichik|KiCHiK]] and provided for the subject [http://forums.winamp.com/showthread.php?s=&postid=2084244 on this forum thread].<BR>
Requires [[user:kichik|KiCHiK]]'s [http://nsis.sourceforge.net/Setting_Environment_Variables WriteEnvStr.nsh].<BR>

== The Code ==
Case 1.
If you want to set an environment variable only for the installer process and its sub-processes use:
<highlight-nsis>
!define JAVA_HOME "d:\JDK1.5"
!define APP_HOME "d:\application"

Section "Add Env Var"
ReadEnvStr $R0 "PATH"
messagebox mb_ok '$R0'
StrCpy $R0 "$R0;${JAVA_HOME};${APP_HOME}"
System::Call 'Kernel32::SetEnvironmentVariableA(t, t) i("PATH", R0).r2'
ReadEnvStr $R0 "PATH"
messagebox mb_ok '$R0'
SectionEnd
</highlight-nsis>
Case 2.
If you want to set an environment variable for the installer process and its sub-processes.Also that will stick for every other process and after reboots too...
<highlight-nsis>
!define JAVA_HOME "d:\JDK1.5"
!define APP_HOME "d:\application"

!include WriteEnvStr.nsh

Section "Add Env Var"
!ifdef ALL_USERS
!define ReadEnvStr_RegKey \
'HKLM "SYSTEM\CurrentControlSet\Control\Session Manager\Environment"'
!else
!define ReadEnvStr_RegKey 'HKCU "Environment"'
!endif

Push JAVA_HOME
Push '${JAVA_HOME}'
Call WriteEnvStr
Push APP_HOME
Push '${APP_HOME}'
Call WriteEnvStr

ReadEnvStr $R0 "PATH"
messagebox mb_ok '$R0'
;ensure that is written valid for NT only
ReadRegStr $0 ${ReadEnvStr_RegKey} 'JAVA_HOME'
ReadRegStr $1 ${ReadEnvStr_RegKey} 'APP_HOME'
StrCpy $R0 "$R0;$0;$1"
;or just this
;StrCpy $R0 "$R0;${JAVA_HOME};${APP_HOME}"
System::Call 'Kernel32::SetEnvironmentVariableA(t, t) i("PATH", R0).r2'
ReadEnvStr $R0 "PATH"
messagebox mb_ok '$R0'
writeuninstaller '$EXEDIR\uninst.exe'
SectionEnd
# ...
Section uninstall
# remove the variable
Push JAVA_HOME
Call un.DeleteEnvStr
Push APP_HOME
Call un.DeleteEnvStr
SectionEnd
</highlight-nsis>

[[Category:Code Examples]]