GD::Barcode::Code39 - Create Code39 barcode image with GD ex. CGI use GD::Barcode::Code39; binmode(STDOUT); print "Content-Type: image/png\n\n"; print GD::Barcode::Code39->new('*CODE39IMG*')->plot->png; with Error Check my $oGdBar = GD::Barcode::Code39->new('*123456789;*'); die $GD::Barcode::Code39::errStr unless($oGdBar); #Invalid Characters GD::Barcode::Code39 is a subclass of GD::Barcode and allows you to create CODE-39 barcode image with GD. This module based on "Generate Barcode Ver 1.02 By Shisei Hanai 97/08/22".

new
$oGdBar = GD::Barcode::Code39->new($sTxt); Constructor. Creates a GD::Barcode::Code39 object for $sTxt.

plot()
$oGd = $oGdBar->plot([Height => $iHeight, NoText => 0 | 1]); creates GD object with barcode image for the $sTxt specified at new method. $iHeight is height of the image. If NoText is 1, the image has no text image of $sTxt. ex. my $oGdB = GD::Barcode::Code39->new('*12345*'); my $oGD = $oGdB->plot(NoText=>1, Height => 20); # $sGD is a GD image with Height=>20 pixels, with no text.

barcode()
$sPtn = $oGdBar->barcode(); returns a barcode pattern in string with '1' and '0'. '1' means black, '0' means white. ex. my $oGdB = GD::Barcode::Code39->new('*12345*'); my $sPtn = $oGdB->barcode(); # $sPtn = '';

$errStr
$GD::Barcode::Code39::errStr has error message.

$text
$oGdBar->{text} has barcode text based on $sTxt specified in new method. Kawai Takanori GCD00051@nifty.ne.jp The GD::Barocde::Code39 module is Copyright (c) 2000 Kawai Takanori. Japan. All rights reserved. You may distribute under the terms of either the GNU General Public License or the Artistic License, as specified in the Perl README file. GD::Barcode