I know what you mean and have had a similar scenario. Flashing the screen
proved effective (it attracted attention when otherwise the user was not
paying attention to the display).
In my scenario the event results in: Flashing the screen, two-tone beeping
sound, flash the LED and animate a small button. If you do something similar
I suggest you have a configuration page where the user can turn one or more
of these actions off.
As to how you do it, like Paul said contact the OEM. All we have implemented
on our platform is an API to turn the screen brightness to half; I then turn
it on/off on a timer.
Cheers
Daniel
--
http://www.danielmoth.com/Blog/
"dborras" <(E-Mail Removed)> wrote in message
news:26C4320E-25C5-486D-B613-(E-Mail Removed)...
> Thank you for the suggestions.
> I have tried several solutions such as redrawing the screen color, showing
> a
> message, and displaying a count down number. But user is busy handling
> and
> scanning the product and not paying attention to the screen, so none of
> these
> approaches have works well. Only after everything is scanned do they look
> at
> the screen. What I need is to somehow catch there attention for a moment
> to
> let them know that a scan was successful. An audio sound works the best,
> but
> not in this situation. That is why I thought that a flash of the
> backlight
> might work.
>
> Daniel Borras
> Programmer / Analyst
> Cal-Pak Systems Inc.
>
> "Paul G. Tobey [eMVP]" wrote:
>
>> 1. Up to the device OEM -- ask Symbol.
>> 2. Again, up to the OEM.
>> 3. You might be able to do this for your entire application, although
>> probably not for everything.
>> 4. What type of actions are we talking about? Does the user access the
>> desktop? If not, you can do virtually anything simply by redrawing your
>> window contents differently.
>>
>> Paul T.
>>
>> "dborras" <(E-Mail Removed)> wrote in message
>> news:49C6B26E-7FD7-40AB-A70E-(E-Mail Removed)...
>> > I'm working on a quality control application using your Symbol 8800
>> > unit,
>> > and
>> > I have run into a problem. The environment that we are working in is
>> > very
>> > noisy and the audio sounds that the unit makes are not loud enough to
>> > be
>> > heard. We have decided that we would try to use visual signals when an
>> > action has been reformed, but we are having difficulty accessing the
>> > display
>> > controls programmatically.
>> >
>> > Is there a way to:
>> > 1. Control the backlight intensity
>> > 2. Or possibly be able to flash the screen off and on.
>> > 3. Or possible invert the display colors.
>> > 4. Other options?
>> >
>> > --
>> > Daniel Borras
>> > Programmer / Anlsyst
>>
>>
>>