> but what if I need the application to be able to read data that scanned
> by some type of bar-code wand? I can program to respond to events from a
> mouse or keyboard, but how or where do you get info to program to react
> events from a bar-code wand?
Well, I use CommX port controls from Greenleaf Software (www.gleaf.com).
Connect a barcode scanner to a serial port and drop one of these activeX
port controls on a form. I usually set up the communication parameters
and open the port (with the open method) in the form_load routine. Then
you can write an event handler for the CommX control's IncommingData
event. In the IncomingData event, I retreive a byte at a time from the
port control's buffer (ReadByte method) and then generally use a CHR()
function to convert it to a readable character. Notice I read a byte from
the buffer - that is the only conversion necessary - from byte to
I use the same port controls for writing to serial label printers. They
cost about $200(US), but I think it is worth it. By the way, I generally
use Symbol barcode scanners.
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