---
name: "GD::Barcode::QRcode"
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::QRcode"
---

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

Create QRcode barcode image with GD

## NAME

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

## SYNOPSIS

*ex. CGI*

```
  use GD::Barcode::QRcode;
  binmode(STDOUT);
  print "Content-Type: image/png\n\n";
  print GD::Barcode::QRcode->new('1234567')->plot->png;
```

*with UnitSize, ECC settings*

```
  my $oGdBar = GD::Barcode::QRcode->new('123456789',
                            { Ecc => 'L', Version=>2, ModuleSize => 2}
                        );
```

## DESCRIPTION

GD::Barcode::QRcode is a subclass of GD::Barcode and allows you to create QRcode barcode image with GD. This module based on "QRcode image CGI version 0.50 (C)2000-2002,Y.Swetake".

### new

*$oGdBar* = GD::Barcode::QRcode-\>new(*$sTxt*,\
                     { Ecc =\> *Ecc Mode*,\
                       Version =\> *Version*,\
                       ModuleSize =\> *Size of 1 modlue*,\
                     });

Constructor. Creates a GD::Barcode::QRcode object for *$sTxt*.

Parameters:

- Ecc

  Ecc mode. Select 'M', 'L', 'H' or 'Q' (Default = 'M').

- Version

  Version ie. size of barcode image (Default = auto select).

- ModuleSize

  Size of modules(barcode unit)  (Default = 1).

### 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::QRcode->new('1234567');
  my $oGD = $oGdB->plot();
  # $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::QRcode->new('1234567');
  my $sPtn = $oGdB->barcode();
```

### $errStr

`$GD::Barcode::QRcode::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::QRcode module is Copyright (c) 2003 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