Overview

The Code 39 Extended symbology is discrete, variable length and self-checking.

Variants

It is based on Code 39 but can encode full 128 character ASCII by using shift combinations.

Invoking

• The data field can consist of any ASCII data
• When the parse option is specified, any instances of ^NNN in the data field are replaced with their equivalent ASCII value, useful for specifying unprintable characters, e.g. ^029 for GS, etc.
• The includecheck option calculates the check digit
• The includecheckintext causes the calculated check digit to appear in the human readable text
• The hidestars option suppresses the asterisks in the human readable text

Examples

0 0 moveto (Code39 Ext!) (includetext includecheck) /code39ext /uk.co.terryburton.bwipp findresource exec

0 0 moveto (Code39^029Extended) (parse includecheck) /code39ext /uk.co.terryburton.bwipp findresource exec