[Mono-dev] [PATCH] System.Environment fixes for Windows

Robert Jordan robertj at gmx.net
Thu Dec 25 09:29:27 EST 2008

James Mansion wrote:
> Miguel de Icaza wrote:
>>> Calling Environment.SetEnvironmentVariable (...,
>>> EnvironmentVariableTarget.User) does not notify the OS that a variable
>>> has changed.
>>> See http://msdn.microsoft.com/en-us/library/ms682653(VS.85).aspx
> ...
>>> 	* Environment.cs (SetEnvironmentVariable) : Adding a call to
>>> 	  internalBroadcastSettingChange to notify Windows that an environment
>>> 	  variable has changed.
> Apologies that I'm not in a position to verify this - but can I question 
> this?  The broadcast is for
> when you change the settings that new processes started by the shell etc 
> will not, not
> for changes to this process' environment.  For changing this process' 
> env, you should
> just need to call SetEnvironmentVariable.
> The comments at least are a bit misleading.

 From MSDN's docs for

Environment.SetEnvironmentVariable Method (String, String,

"If target is User or Machine, other applications are notified of the 
set operation by a Windows WM_SETTINGCHANGE message."

Hence the patch (and the ChangeLog comment) is correct.


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