Interesting - this may again be an emulator thing (still have to try on real device.)
What I get on the emulator, is that pressing the power key for more than an instant
toggles the back light but does not notify my
app. But - if I HOLD the power for several seconds (as I might on a real device),
then my app DOES get a vchrBacklight event.
So for now, I'll assume that this works on the real device and I can just hook
vchrBacklight.
Thanks for your time!
- Jeff
DIAMOND JEFF wrote:
> Hello Palm Folks!
>
> I have not found a way to detect when the user toggles the back light
> under OS 3.1.
> Under OS 3.5, I get a vchrBacklight (or vchrContrast, etc, etc).
>
> Under OS 3.1, it seems like my app receives no events on the subject.
>
> Is this correct? Has anyone found an indirect way to detect this?
>
> (As an example of an indirect method, the way I detect that the device
> has powered on under OS 3.1 (in lieu of vchrPowerOff and vchrLateWakeup)
> is to note when I get a vchrHardPower, and then periodically check
> KeyCurrentState() for when the power key clears. [I could detect it
> sooner, of course, but this was more compatible with my event loop])
>
> Thanks much, OS 3.1 Gurus!
>
> (There's an odd satisfaction one gets from porting to older OS versions
> that doesn't come with porting to later OS versions...)
>
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