The documentation for these modules is misleading. GD::Barcode::UPCE has $text $oGdBar->{$text} while GD::Barcode::Code39 has $text $oGdBar->{text}. Checking the source, $oGdBar->{text} would be correct for both modules.

The message "Can't locate object method "some_method" via package "Some::Module" (perhaps you forgot to load "Some::Module"?) at ..." generally indicates someone wrote:

$some_object->some_method(); # where $some_object is an instance of So
+me::Module

[download]

but should have written:

use Some::Module;
...
$some_object->some_method();

[download]

I can't see a reference to the method Small() in your code but I can see two in the source code for GD::Barcode::Code39 in the plot() method.

If I were you, I'd raise a bug report at this point. In case you don't know, just go to GD::Barcode::Code39 and follow the Report a bug link in the CPAN RT box (near the top right-hand corner in my browser).

-- Ken

In reply to Re^2: Need some help with GD::Barcode::UPCE module by kcott
in thread Need some help with GD::Barcode::UPCE module by vendion

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.