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How to detect UAC

Posted on 2009-04-05
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Last Modified: 2012-08-13
How can I detect if UAC is enabled or disabled?
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Question by:DSOM
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6 Comments
 
LVL 11

Expert Comment

by:xtreminator
ID: 24071954
comman methode to detect UAC in vista is creating new notepad file and write some text and save this file in root drive

eg.

go to c: drive
create new notepad file and write something (dummy) entries and try to save in C: drive, when error prompted like cant save or cant make file that means UAC is enabled.

and every time u prompting when u settings in system (system protection prompt, OS need to answer it)
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Author Comment

by:DSOM
ID: 24072300
Thanks but my program is elevated so I would be able to create that file without error.  I am looking for an API or some other programming means.
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LVL 1

Expert Comment

by:stOrM
ID: 24072610
Hi,
you could use JWSCL for this in the JWSCLToken.pas unit you'll find function JwIsUACEnabled: Boolean;

The JWSCL Api can be downloaded here http://blog.delphi-jedi.net/home/

regards
stOrM!
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Author Comment

by:DSOM
ID: 24072710
Unfortunately that function does not appear in that unit (anymore) :/
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LVL 1

Expert Comment

by:stOrM
ID: 24073650
Huh? Maybe you have an outdated version? Maybe you should update via svn in mine there is the function inside!

regards
s!
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LVL 26

Accepted Solution

by:
EddieShipman earned 2000 total points
ID: 24081348
You can also check this registry key:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA

0=Disabled
1=Enabled
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