Entering Keyboard Commands For Barcodes

Legacy Poster

• 2. Mai 2012 09:25

I'm brand new to Bartender and have had minimal experience with barcodes and vb scripts - can anyone advise how I can setup two keyboard (left) arrow keystrokes & a carriage return keystroke command into 1 barcode - it will be used to enter data into an Excel spreadsheet?

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  Fernando Ramos Miracle

  ★ BarTender Hero ★

  • 6. August 2014 15:30
  Hello Barrington and sorry for the delay,

   

  Can keyboard function characters be encoded into barcodes? The answer is both yes and no!

   

  Barcodes cannot encode keyboard function keys. The reason is that function keys (such as F1 - F12 or a keystrokes) are unique to the hardware and are not an ASCII code. For a PC keyboard, function keys transmitted as keyboard scan codes and have no equivalent ASCII control codes that can be encoded into a barcode. However, there is a work around.

   

  Many keyboard wedge scanners can be programmed to substitute a function key each time they scan a specified character. Since a keyboard wedge reader uses the same data transmission standards as a keyboard, they can send a scan code representing a function key.

   

  For example, if the application will never need a plus sign (+) in the barcode, the keyboard wedge replaces the plus sign with an F10 key. If "12345+" was scanned, it would produce the data stream "12345" followed by the F10 key. This same approach may be used even with bar code readers attached to a serial port if a "soft wedge" program is used. This "soft wedge" is a program that takes data from a serial port and treats it as if it had come in through the keyboard. Some of these programs also allow character substitution.

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