Re: I need suggestion on how to implement a barcode reader for win2k

From: Walter Oney (waltoney_at_oneysoft.com)
Date: 02/09/05 

Date: Tue, 08 Feb 2005 22:13:05 -0500

Long Ta wrote:
> I have an old barcode reader that can connect to a serial port on my windows
> 2k computer. I would like to scan any barcode and it would appear on the
> console where ever the application is; sort of like a keyboard. How do I go
> about doing this. I got the MSDN DDK subscription but as read thru this forum
> I still am undecided of what to do for what I want. Can someone suggest
> something please? Thank you.

How does the reader generate its input? I recall a very simple (and
cheap) "reader" that just toggled one of the RS-232 lines as you swept
the tip over the bar code. You must have a kernel-mode driver for that,
because you need to carefully measure the time between transitions. 

--
Walter Oney, Consulting and Training
Basic and Advanced Driver Programming Seminars
Check out our schedule at http://www.oneysoft.com

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