Detecting Input Source

[Anthony]

Hello everyone,
I was wondering if there is a way in code that you can detect where an input
came from, whether keyboard or other COM port? I thank you ahead of time.

Anthony

[Dean Earley]

What sort of input?
Both Keyboard and the Com port are monitored by completely different methods.

--
Dean Earley (dean.earley@icode.co.uk)
Assistant Developer

iCode Systems
"Anthony" <anthonycaravia@poorman-douglas.com> wrote in message news:3b44d7ef@news.devx.com...
>
> Hello everyone,
> I was wondering if there is a way in code that you can detect where an input
> came from, whether keyboard or other COM port? I thank you ahead of time.
>
> Anthony

[Anthony]

Well I'm using a barcode scanner and I want to be able to have my application
know whether an input comes from the scanner or keyboard. I
can't recall at the moment where the Barcode scanner was connected but I
want to say that it shared the mouse connection.

"Dean Earley" <dean.earley@icode.co.uk> wrote:
>What sort of input?
>Both Keyboard and the Com port are monitored by completely different methods.
>
>--
>Dean Earley (dean.earley@icode.co.uk)
>Assistant Developer
>
>iCode Systems
>"Anthony" <anthonycaravia@poorman-douglas.com> wrote in message news:3b44d7ef@news.devx.com...
>>
>> Hello everyone,
>> I was wondering if there is a way in code that you can detect where an
input
>> came from, whether keyboard or other COM port? I thank you ahead of time.
>>
>> Anthony
>
>

[Russell]

"Anthony" <anthonycaravia@poorman-douglas.com> wrote:
>
>Well I'm using a barcode scanner and I want to be able to have my application
>know whether an input comes from the scanner or keyboard. I
>can't recall at the moment where the Barcode scanner was connected but I
>want to say that it shared the mouse connection.
>
>"Dean Earley" <dean.earley@icode.co.uk> wrote:
>>What sort of input?
>>Both Keyboard and the Com port are monitored by completely different methods.
>>
>>--
>>Dean Earley (dean.earley@icode.co.uk)
>>Assistant Developer
>>
>>iCode Systems
>>"Anthony" <anthonycaravia@poorman-douglas.com> wrote in message news:3b44d7ef@news.devx.com...
>>>
>>> Hello everyone,
>>> I was wondering if there is a way in code that you can detect where an
>input
>>> came from, whether keyboard or other COM port? I thank you ahead of
time.
>>>
>>> Anthony
>>
>> I think you are going to have to deal with the interrupt used by the device.
I used to own a computerized cash register business and I did alot of work
with citizen and an old keyboard system that ran on rs422 com ports converted
from standard serial ports, I did the programming in Turbo Pascal. scanners
can operate inbetween a keyboard and the cpu and you need to detect the interupt
and the data being sent with it. You can only get interrupt 17 times a second
so you may consider using the timer function and checking the intrreupt status
in 1000/17 times within you function and then doing whatever you need when
the device (scanner) driver determines it was called. VB may have some other
function to do all this in 1 call but i am not knowledgable enuff to know
that. good luck
>

[Dean Earley]

If it is sharing a connection with the mouse, I'd say it was serial, and wouldn't affect the keyboard at all. To read it, use a
serial control like MSComm.

If it shared a connection with the keyboard, you would need to configure the scanners to send some characters before and after the
code. This is very device specific, so I suggest either looking in the manual, or looking on the manufactures website.

--
Dean Earley (dean.earley@icode.co.uk)
Assistant Developer

iCode Systems
"Anthony" <anthonycaravia@poorman-douglas.com> wrote in message news:3b4cc91e$1@news.devx.com...
>
> Well I'm using a barcode scanner and I want to be able to have my application
> know whether an input comes from the scanner or keyboard. I
> can't recall at the moment where the Barcode scanner was connected but I
> want to say that it shared the mouse connection.
>
> "Dean Earley" <dean.earley@icode.co.uk> wrote:
> >What sort of input?
> >Both Keyboard and the Com port are monitored by completely different methods.
> >
> >--
> >Dean Earley (dean.earley@icode.co.uk)
> >Assistant Developer
> >
> >iCode Systems
> >"Anthony" <anthonycaravia@poorman-douglas.com> wrote in message news:3b44d7ef@news.devx.com...
> >>
> >> Hello everyone,
> >> I was wondering if there is a way in code that you can detect where an
> input
> >> came from, whether keyboard or other COM port? I thank you ahead of time.
> >>
> >> Anthony
> >
> >
>

[Anthony]

Thank you all for you response. I will try your suggestions and let you know
what happens.


"Dean Earley" <dean.earley@icode.co.uk> wrote:
>If it is sharing a connection with the mouse, I'd say it was serial, and
wouldn't affect
>the keyboard at all. To read it, use a
>serial control like MSComm.
>
>If it shared a connection with the keyboard, you would need to configure
the scanners
>to send some characters before and after the
>code. This is very device specific, so I suggest either looking in the
manual, or looking
>on the manufactures website.
>
>--
>Dean Earley (dean.earley@icode.co.uk)
>Assistant Developer
>
>iCode Systems
>"Anthony" <anthonycaravia@poorman-douglas.com> wrote in message news:3b4cc91e$1@news.devx.com...
>>
>> Well I'm using a barcode scanner and I want to be able to have my application
>> know whether an input comes from the scanner or keyboard. I
>> can't recall at the moment where the Barcode scanner was connected but
I
>> want to say that it shared the mouse connection.
>>
>> "Dean Earley" <dean.earley@icode.co.uk> wrote:
>> >What sort of input?
>> >Both Keyboard and the Com port are monitored by completely different
methods.
>> >
>> >--
>> >Dean Earley (dean.earley@icode.co.uk)
>> >Assistant Developer
>> >
>> >iCode Systems
>> >"Anthony" <anthonycaravia@poorman-douglas.com> wrote in message news:3b44d7ef@news.devx.com...
>> >>
>> >> Hello everyone,
>> >> I was wondering if there is a way in code that you can detect where
an
>> input
>> >> came from, whether keyboard or other COM port? I thank you ahead of
time.
>> >>
>> >> Anthony
>> >
>> >
>>
>
>