{
    "mode": "perldoc",
    "parameter": "GD::Barcode::NW7",
    "section": "",
    "url": "https://www.chedong.com/phpMan.php/perldoc/GD%3A%3ABarcode%3A%3ANW7/json",
    "generated": "2026-05-30T19:10:46Z",
    "synopsis": "*ex. CGI*\nuse GD::Barcode::NW7;\nbinmode(STDOUT);\nprint \"Content-Type: image/png\\n\\n\";\nprint GD::Barcode::NW7->new('123456789012')->plot->png;\n*with Error Check*\nmy $oGdBar = GD::Barcode::NW7->new('123456789E');\ndie $GD::Barcode::NW7::errStr unless($oGdBar);        #Invalid Characters",
    "sections": {
        "NAME": {
            "content": "GD::Barcode::NW7 - Create NW7 barcode image with GD\n",
            "subsections": []
        },
        "SYNOPSIS": {
            "content": "*ex. CGI*\n\nuse GD::Barcode::NW7;\nbinmode(STDOUT);\nprint \"Content-Type: image/png\\n\\n\";\nprint GD::Barcode::NW7->new('123456789012')->plot->png;\n\n*with Error Check*\n\nmy $oGdBar = GD::Barcode::NW7->new('123456789E');\ndie $GD::Barcode::NW7::errStr unless($oGdBar);        #Invalid Characters\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "GD::Barcode::NW7 is a subclass of GD::Barcode and allows you to create\nNW7 barcode image with GD. This module based on \"Generate Barcode Ver\n1.02 By Shisei Hanai 97/08/22\".\n\nnew\n*$oGdBar* = GD::Barcode::NW7->new(*$sTxt*);\n\nConstructor. Creates a GD::Barcode::NW7 object for *$sTxt*. *$sTxt* has\nvariable length string with (0-9, - $ / . + ABCD).\n\nplot()\n*$oGd* = $oGdBar->plot([Height => *$iHeight*, NoText => *0 | 1*]);\n\ncreates GD object with barcode image for the *$sTxt* specified at new\nmethod. *$iHeight* is height of the image. If *NoText* is 1, the image\nhas no text image of *$sTxt*.\n\nex.\nmy $oGdB = GD::Barcode::NW7->new('123456789012');\nmy $oGD = $oGdB->plot(NoText=>1, Height => 20);\n# $sGD is a GD image with Height=>20 pixels, with no text.\n\nbarcode()\n*$sPtn* = $oGdBar->barcode();\n\nreturns a barcode pattern in string with '1' and '0'. '1' means black,\n'0' means white.\n\nex.\nmy $oGdB = GD::Barcode::NW7->new('123456789012');\nmy $sPtn = $oGdB->barcode();\n# $sPtn = '';\n\n$errStr\n$GD::Barcode::NW7::errStr\n\nhas error message.\n\n$text\n$oGdBar->{$text}\n\nhas barcode text based on *$sTxt* specified in new method.\n",
            "subsections": []
        },
        "AUTHOR": {
            "content": "Kawai Takanori GCD00051@nifty.ne.jp\n",
            "subsections": []
        },
        "COPYRIGHT": {
            "content": "The GD::Barocde::NW7 module is Copyright (c) 2000 Kawai Takanori. Japan.\nAll rights reserved.\n\nYou may distribute under the terms of either the GNU General Public\nLicense or the Artistic License, as specified in the Perl README file.\n",
            "subsections": []
        },
        "SEE ALSO": {
            "content": "GD::Barcode\n",
            "subsections": []
        }
    },
    "summary": "GD::Barcode::NW7 - Create NW7 barcode image with GD",
    "flags": [],
    "examples": [],
    "see_also": []
}