Is there any method to control the background light of 7650?

[tntfighter-2002]

As I asked in the title,My program sometimes need to control the
background light of the 7650 instead of letting the system to control
it,For example:I want it keep turn on although the time expiring the limitation time.

[bcchong]

I think Nokia bypass the standard Symbian API.
But I found that some of the system setting/status information are stored inside some ini file in text form.
I think you can try to read/write the those ini file to see if you can change the backlight or not.
Those ini files are stored under c:\system\shareddata\*.ini
You even can change the system color plate/background image/screen saver setting by changing those content of the ini file;-)
The other way is to reset the inactivity time (User::ResetInactivityTime) to keep the timeout never reach.
This is the much I know. Try hacking the system around for those undocumented/unsupported method yourself.