---
name: "GD::Barcode::UPCE"
section: "3pm"
platform: "linux"
package: "libgd-barcode-perl"
version: "2.00-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/GD::Barcode::UPCE"
---

# GD::Barcode::UPCE(3pm)

Create UPC-E barcode image with GD

## NAME

GD::Barcode::UPCE - Create UPC-E barcode image with GD

## SYNOPSIS

*ex. CGI*

```
  use GD::Barcode::UPCE;
  binmode(STDOUT);
  print "Content-Type: image/png\n\n";
  print GD::Barcode::UPCE->new('123456')->plot->png;
```

*with Error Check*

```
  my $oGdBar = GD::Barcode::UPCE->new('123456789');
  die $GD::Barcode::UPCE::errStr unless($oGdBar);       #Invalid Length
```

## DESCRIPTION

GD::Barcode::UPCE is a subclass of GD::Barcode and allows you to create UPC-E barcode image with GD. This module based on "Generate Barcode Ver 1.02 By Shisei Hanai 97/08/22".

### new

*$oGdBar* = GD::Barcode::UPCE-\>new(*$sTxt*);

Constructor. Creates a GD::Barcode::UPCE object for *$sTxt*. *$sTxt* has 6 or 7 or 8 numeric characters(\[0-9\]). If *$sTxt* has 6 characters, this module adds '0' at the front of *$sTxt*. and calculates CD for you. If *$sTxt* has 7 characters, this module calaculates CD for you.

### 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::UPCE->new('123456');
  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', 'G' and '0'. '1' means black, 'G' also means black but little bit long, '0' means white.

```
 ex.
  my $oGdB = GD::Barcode::UPCE->new('123456');
  my $sPtn = $oGdB->barcode();
  # $sPtn = '';
```

### $errStr

`$GD::Barcode::UPCE::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::UPCE 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.

## SEE ALSO

GD::Barcode