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  1. #1
    Registered User
    Join Date
    Sep 2003
    Location
    Fort Collins Colorado
    Posts
    31

    Backlight Control

    Is there no way to control the backlight directly in series 60? I've searched, and read a lot of posts about backlight managment, but they all seem to reduce to a hack that keeps the backlight on through a "back door" (ResetInactivityTime) and I've found no way to turn it off. HAL::Set(EBacklightState, EFalse) does not work on a BRAND NEW V8.0 6680, nor does it work on any other phones I have access too, are there ANY phones that it does work on? I can't even find a way to determine if the backlight is on or off. (HAL::Get(EBacklightstate, val) also returns "KErrNotSupported")

    Incidently, the ResetInactivityTime hack does not turn the backlight on if the keyboard is locked, just one of the reasons that hack is... I'll be kind, less than elegant...

    As important as the backlight is to power managment and user interaction I simply can't belive there is no way to control it.

    WILL SOMEBODY PLEASE TELL US HOW TO DIRECTLY MANAGE THE BACKLIGHT?

    Ken, stuck at the moment with a lame UI.

  2. #2
    Nokia Developer Champion
    Join Date
    Mar 2004
    Location
    Czech Republic
    Posts
    2,037

    Re: Backlight Control

    Hi,

    there is no other way how to maintain backlight, then this timer....:(( It will change in Symbian 9.1 (FP3) as I remember and as I read in official papers...

    Bye
    STeN

  3. #3
    Registered User
    Join Date
    Dec 2005
    Posts
    1

    Re: Backlight Control

    Has Nokia ever changed a phones firmware to accommodate what users might want, and can you change from ver 8 to ver 9.1

  4. #4
    Super Contributor
    Join Date
    Jun 2006
    Location
    India
    Posts
    3,037

    Re: Backlight Control

    Hi!

    when i am trying to on my backlight on my screen saver applcation using HAL

    HAL::Set(HALData::EBacklightState,1) it returns KErrNotSupported and it is clearly mention in SDK it requried WriteDeviceData Capability that i have used in my mmp file.

    can anyone help me whats the reason behind this.


    thanx in advance.

  5. #5
    Nokia Developer Moderator
    Join Date
    Feb 2006
    Location
    Budapest, Hungary
    Posts
    28,570

    Re: Backlight Control

    Quote Originally Posted by kkrish
    HAL::Set(HALData::EBacklightState,1) it returns KErrNotSupported
    ...
    can anyone help me whats the reason behind this.
    It might be true, for example.

  6. #6
    Super Contributor
    Join Date
    Jun 2006
    Location
    India
    Posts
    3,037

    Re: Backlight Control

    i have checked it but it does not work.
    any other suggesions are most welcome.

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