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Top Forums UNIX for Advanced & Expert Users read from a USB Barcode-Reader Post 55917 by beilstwh on Wednesday 22nd of September 2004 09:44:58 AM
Old 09-22-2004
Quote:
Originally posted by Perderabo
I sorta doubt that a keyboard module will handle a bar code reader anyway. But I've never worked with this stuff, so who knows...
Typically the bar code reader will do all the interperation of the barcode and will return the value string. To a keyboard module it would look like someone typed "1234567890"
 

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Barcode::ITF(3pm)					User Contributed Perl Documentation					 Barcode::ITF(3pm)

NAME
GD::Barcode::ITF - Create ITF(Interleaved2of5) barcode image with GD SYNOPSIS
ex. CGI use GD::Barcode::ITF; binmode(STDOUT); print "Content-Type: image/png "; print GD::Barcode::ITF->new('1234567890')->plot->png; with Error Check my $oGdBar = GD::Barcode::ITF->new('A12345678'); die $GD::Barcode::ITF::errStr unless($oGdBar); #Invalid Characters $oGdBar->plot->png; DESCRIPTION
GD::Barcode::ITF is a subclass of GD::Barcode and allows you to create ITF barcode image with GD. new $oGdBar = GD::Barcode::ITF->new($sTxt); Constructor. Creates a GD::Barcode::ITF object for $sTxt. $sTxt has numeric characters([0-9]). 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::ITF->new('12345678'); 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::ITF->new('12345678'); my $sPtn = $oGdB->barcode(); $errStr $GD::Barcode::ITF::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::ITF 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 perl v5.12.3 2003-05-29 Barcode::ITF(3pm)
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