Re: [Gambas-user] usb codebar reader how to handle events!?

[Charlie]

I can't see how you are supposed to tell if you are typing on a keyboard or
using a barcode reader as they are both USB devices setup to look like a
keyboard. It's probably possible but you'll need somebody who can write code
to read USB ports and understands how they work - That's not me! 
OK let's try another tack. The barcode reader can fire in text at quite a
rate so here is some code that does not rely on any special characters. 
It uses the fact that if there is no new character added to the TextBox in
1/16th of a second then the barcode is read.
BarcodeReader.tar
  



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[Gambas-user] usb codebar reader how to handle events!?

[PICCORO McKAY Lenz]

now continues with strange petitions:

now i have a usb metrologic code bar reader, of course in each plug and
play changes the usb node, that was solved!!

My problem are now that i want to detect when the input comes from this
device and not from the keyboard!

the reader returns chars! i can configure to return a start char and end
char, but make me depends on a pre-configuration

i want something like "if inputX_read " etc  etc

by example, for serial port if i have Sport the event when i have data are
_Read..

how can i made some thing similar with this device usb

can manage as a extra keyboard, if this are, how can i diference two
keyboards (one the standar keyboard the other the codereader)

a portion oof code will be helpfull

Lenz McKAY Gerardo (PICCORO)
http://qgqlochekone.blogspot.com
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Re: [Gambas-user] usb codebar reader how to handle events!?

[Jack]

Le 23/12/2015 16:59, PICCORO McKAY Lenz a écrit :
> now continues with strange petitions:
>
> now i have a usb metrologic code bar reader, of course in each plug and
> play changes the usb node, that was solved!!
>
> My problem are now that i want to detect when the input comes from this
> device and not from the keyboard!
>
> the reader returns chars! i can configure to return a start char and end
> char, but make me depends on a pre-configuration
>
> i want something like "if inputX_read " etc  etc
>
> by example, for serial port if i have Sport the event when i have data are
> _Read..
>
> how can i made some thing similar with this device usb
>
> can manage as a extra keyboard, if this are, how can i diference two
> keyboards (one the standar keyboard the other the codereader)
>
> a portion oof code will be helpfull
>

Hello,

a barcode reader does not need to be declared in the system. It is 
automatically recognized.

you must configure your reader with a preamble. For example with a *.
Then when you get the barcode, you control the first character is a *
If Left$(textbox.Text) = "*" Then
Barcode = true
Textbox.Text = Mid$(Textbox.Text, 2, Len(Textbox.Text))
what you want with Textbox.text
endif



Jack

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Re: [Gambas-user] usb codebar reader how to handle events!?

[PICCORO McKAY Lenz]

Errr.. Jack! i have already preconfigured with prefix (an "a") and sufix (a
"z"),

i want without that!, i wnat detect the event itselft!

2015-12-23 11:45 GMT-04:30 Jack :

> Hello,
>
> a barcode reader does not need to be declared in the system. It is
> automatically recognized.
>
> you must configure your reader with a preamble. For example with a *.
> Then when you get the barcode, you control the first character is a *
> If Left$(textbox.Text) = "*" Then
> Barcode = true
> Textbox.Text = Mid$(Textbox.Text, 2, Len(Textbox.Text))
> what you want with Textbox.text
> endif
>
>
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Re: [Gambas-user] usb codebar reader how to handle events!?

[PICCORO McKAY Lenz]

thanks charlie.. currently as i previusly posted, that's was doint! but my
reader does not return "enter" or "carrige return" , only the code that
reads!

by now i can configure with "return" at the end of the read, or with a
prefix and a sufix.. but i want to do not depend on those tricks!

Lenz McKAY Gerardo (PICCORO)
http://qgqlochekone.blogspot.com

2015-12-23 11:45 GMT-04:30 Charlie :

> The barcode reader will only return the barcode information not the special
> characters that are needed to create it. Once all the barcode is sent the
> barcode reader will send a *Return key*.
> We can use Gambas to check for the *Return key* so we know the barcode has
> been completely read. If you want to see how this works open a spreadsheet
> and read a code into a cell and you will see that if the code is read into
> cell A1 the cursor ends up in cell B1 because of the *Return key*.
> There is no need to program the reader to send any extra characters.
> Here is some code you can use to see how Gambas can handle to reader.
> BarcodeReader.tar
> 
>
>
>
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> View this message in context:
> http://gambas.8142.n7.nabble.com/usb-codebar-reader-how-to-handle-events-tp55079p55083.html
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>
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Re: [Gambas-user] usb codebar reader how to handle events!?

[Charlie]

The barcode reader will only return the barcode information not the special
characters that are needed to create it. Once all the barcode is sent the
barcode reader will send a *Return key*.
We can use Gambas to check for the *Return key* so we know the barcode has
been completely read. If you want to see how this works open a spreadsheet
and read a code into a cell and you will see that if the code is read into
cell A1 the cursor ends up in cell B1 because of the *Return key*.
There is no need to program the reader to send any extra characters.
Here is some code you can use to see how Gambas can handle to reader. 
BarcodeReader.tar
  



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Re: [Gambas-user] usb codebar reader how to handle events!?

[Fabien Bodard]

hey jack :

Textbox.Text = Mid$(Textbox.Text, 2, Len(Textbox.Text))

Textbox.Text = Right(Textbox.Text, -1)



2015-12-23 20:16 GMT+01:00 PICCORO McKAY Lenz :
> thanks charlie.. currently as i previusly posted, that's was doint! but my
> reader does not return "enter" or "carrige return" , only the code that
> reads!
>
> by now i can configure with "return" at the end of the read, or with a
> prefix and a sufix.. but i want to do not depend on those tricks!
>
> Lenz McKAY Gerardo (PICCORO)
> http://qgqlochekone.blogspot.com
>
> 2015-12-23 11:45 GMT-04:30 Charlie :
>
>> The barcode reader will only return the barcode information not the special
>> characters that are needed to create it. Once all the barcode is sent the
>> barcode reader will send a *Return key*.
>> We can use Gambas to check for the *Return key* so we know the barcode has
>> been completely read. If you want to see how this works open a spreadsheet
>> and read a code into a cell and you will see that if the code is read into
>> cell A1 the cursor ends up in cell B1 because of the *Return key*.
>> There is no need to program the reader to send any extra characters.
>> Here is some code you can use to see how Gambas can handle to reader.
>> BarcodeReader.tar
>> 
>>
>>
>>
>> --
>> View this message in context:
>> http://gambas.8142.n7.nabble.com/usb-codebar-reader-how-to-handle-events-tp55079p55083.html
>> Sent from the gambas-user mailing list archive at Nabble.com.
>>
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Fabien Bodard

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