The information about when that time-out occurs is pretty well locked-up in
GWES, the windowing system. If you want to keep the system from deciding
it's been idle too long and having it turn off the backlight or something,
you can call SystemIdleTimerReset().
However, there aren't any specified notifications for time-out occurring,
nor any hooks for being informed when some other application or driver calls
SystemIdleTimerReset. There are special cases to that, such as detecting
that the system is about to suspend (possibly because of idleness), but not
really what you want it to do. I think that the best you can do on a fixed
platform like the PPC is to detect all of the events, as you already have
found, and keep your own timer.
I keep meaning to add support for doing that kind of thing to our platforms,
but it always falls behind something higher priority...
Paul T.
Quote:
> WinCE 3.0 and specifically Pocket PC
> Brian
> > What version of Windows CE?
> > Paul T.
> > > Is there anyway to get the system idle time? I've found functions
that
> > let
> > > me get and set different values for various idle timeouts, but non
which
> > let
> > > me retrieve the current idle time. Or, on the flip side, is there any
> way
> > > to register with some power control function to get various
> notifications?
> > > We have a secondary display and we would like it to power down/off a)
> with
> > > the system backlight b) on a seperate timer (if system idle for
> timeout).
> > > A) We don't see a way to accomplish this.
> > > B) We can do this today, but it requires intercepting all mouse events
> and
> > > constantly reseting our timer which is not our prefered solution. And
> we
> > > figure why do this when the system is already keeping an idle timer or
> > > somenthing similar.
> > > Please, throw any hints, suggestions at me.
> > > Brian
> > > iisvr.com
Get system idle time