barcode::code39(3)

NAME

GD::Barcode::Code39 - Create Code39 barcode image with GD

SYNOPSIS

ex. CGI
  use GD::Barcode::Code39;
  binmode(STDOUT);
  print "Content-Type: image/png0;
  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

DESCRIPTION

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 speci
fied 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.

AUTHOR

Kawai Takanori GCD00051@nifty.ne.jp

COPYRIGHT

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 Gen
eral Public License or the Artistic License, as specified
in the Perl README file.

SEE ALSO

GD::Barcode

perl v5.8.0 2000-12-29 Barcode::Code39(3)