how to display unprintable ascii char

[JTAG]

hello,

i'm gething string from a bar-code, the bar code is program that at end of the string i'm puting a ctrl-g(^G) and enter.

CTRL-G in ascii table is 07. how can i check if i get the CTRL-G(^G) and the enter at the end of the string.?

regard's

eyal.

[DavidJCrawford]

You can do it like this

Just use the match pattern in the string palette. The string constants are in '\' mode to see the control characters which are \07 and \r\n for <CR><LF>

Hope this helps

David

Message Edited by David Crawford on 05-11-2006 12:45 PM

Message Edited by David Crawford on 05-11-2006 12:46 PM

[JTAG]

hi david,

i try what u sugested but it's still dosent work.

regard's

eyal

[DavidJCrawford]

OK. If you right click on a string there is a normal display, '\' codes display, password display and hex display. You need to make sure that you have '\' codes display ticked.

Also I have a used \r\n maybe its just the \n character that the scanner is sending.

What version of labview are you using? I can send post the example vi to let you see it working.

David

[JTAG]

hi david,

i have labview 7.1.

[DavidJCrawford]

Here you go!

[JTAG]

Hi david,

thank's for your example, but still i cant see the ascii chars.

i know that in dos (run->cmd) i can see in the end of the string the ^G and then enter , so the barcode is working good.

try to press[ctrl+g]  in dos mode the computer will beep after the enter,but in labview it's[i think] asurtcut and when i try to insert the barcode

it's doing something maybe we need to disable the surtcut menu and then try it.?

do you know how to disable this surtcut?(it's not in the vi propertis, i try it ...not working).

regards

eyal.

[DavidJCrawford]

Ah see what you mean. Not sure you can do anything about that.

Configure your barcode scanner to not output CTRL+G would be my next suggestion. Incidently, you would suffer the same sort of issue if you were scanning the barcode into excel. CTRL+G is GOTO in that application.

David