How to figure out if UAC is active?

[vbigiani]

I have a console app that (in certain situations) does not work correctly when UAC is enabled. As such, I'd like to print out a warning (and, if possible, trigger an UAC authorization screen) if UAC is detected as activated. What is the code to do so?

If possible, I'd prefer code in C or C++ for the following functions:

/* returns 1 if UAC is enabled, 0 if disabled or the OS is a non-Vista  one */
int isUACEnabled()

/* triggers an UAC authorization dialogue, granting full access for the rest of the program's operation. Returns success or failure. */
int AskUAC()

I'm sorry if AskUAC() asks for something incompatible with how Vista works, I'm not any familiar with that.

I tried to search for UAC and "User Account Control", but the first search is disabled and the second didn't return anything relevant.

Many thanks for any answer.

[TkTech]

You need to use the registry to check and see if UAC is enabled. The value is 'EnableLUA' under 'HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Po licies\System'

If its a '1' then its enabled, else its disabled. If the value doesn't exist, its not running vista.

[vbigiani]

Many thanks for your reply. I'll reply back if I still need help.