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It is possible, I've done it in the past. Google "bar code generation library source" and you should be able to find something. I ran into a serious problem though, I was generating a GIF and visually it seemed correct but whether or not a reader could actually read the bar seemed to be dependent on the browser and the printer used to print the bar code. The failure rate was about 50%. If we were only writing an internal corporate application and had control over the browser and printers used, we probably could have used it. Unfortunately this application was for the masses so we crap canned it.
Now we did find an alternative bar code format that was much more browser and printer friendly (98+% success rate), I forget the name but it's the blob pattern looking thing that Fandango and others use. The problem is that the readers that read this format are a little more expensive and someone holds patent to the format so there is some hefty licensing fees involved (at least there was 5 or so years ago when we research this - $10K per server).
Good luck. Hope this helps.
I just downloaded the application (Barbecue - Java barcode generator), and I would like to use the CF code in the previous post, but I don't know how to set up Barbecue, since it's in Java. How do those work together? What do I need to do to set it up?
setup is very easy: just copy jar file to cf server custom tags directory.
cf server will look from this directory barbecue jar file when executing your cf code.
Kim il Sung