Is library running on Citrix or Terminal Server? - Testing on existence/value of environment variable SESSIONNAME - Solution

[Doug Easterbrook]

hi Phil/Bruno…

Just out of interest……  what reasons make you want to know if you are running on terminal services???


A number of our customers run under terminal services — and we have had no reason in the past to want to know.   so the underlying purpose is of interest to me — in case I should want to know :)

thanks in advance.



Doug Easterbrook
Arts Management Systems Ltd.
mailto:doug at artsman.com
http://www.artsman.com
Phone (403) 650-1978




see you at the third annual users conference
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> On Jan 27, 2018, at 4:45 AM, Phil (OmnisList) via omnisdev-en <omnisdev-en at lists.omnis-dev.com> wrote:
> 
> Hi Bruno,
> 
> I had this code lingering, not used recently:
> 
> Register DLL ('user32','GetSystemMetrics','AJ')      ;; jf - 21 aug 03 -- detect if running under Terminal Server
> Call DLL ('user32','GetSystemMetrics',4096) Returns lbUsingTerminalServices     ;; 4096 = SM_REMOTESESSION
> 
> May help you... or point you in a different direction...
> 
> regards
> Phil Potter
> Based in Chester in the UK.
> 
> On 26/01/2018 15:40, bub wrote:
>> Hey all,
>> 
>> I would love to find out if my library is running on Citrix or Terminal Server.
>> 
>> Apparently, the environment variable SESSIONNAME is only defined on Citrix or Terminal Server so that would be a way to find it out, even more specific
>> 
>> Citrix client => SESSIONNAME starts with ICA
>> Rdp client => SESSIONNAME starts with rdp
>> Console session => SESSIONNAME starts with console
>> 
>> Is there any DLL that can provide the value of an envirnoment variable like SESSIONNAME?
>> 
>> Ok, just did some more effort in scrolling through historic posts and found similar construction to get username (which i changed now to sessionname)
>> 
>> Register DLL ('kernel32','GetEnvironmentVariableA','ICCM')
>> Call DLL ('kernel32','GetEnvironmentVariableA','SESSIONNAME',%%SESSIONNAME,255)
>> 
>> So solution found, happy to share, might me be interesting for some
>> 
>> Bruno.
>> 
>> 
>> 
>> 
>> 
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