File: lentry

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#!/usr/local/bin/perl -w

use Tk;

{
 # This could/should go in Tk/LEntry.pm 
 package Tk::LEntry;
 require Tk::Entry;
use base  qw(Tk::Derived Tk::Entry);
 Construct Tk::Widget 'LEntry';

 sub Populate
 {
  my ($w,$args) = @_;
  $w->ConfigSpecs(-maxwidth => ['PASSIVE','maxWidth','MaxWidth',12]);
 }

 sub insert
  {
   my ($w,@args) = @_;
   # Do the insert as Entry does it.
   $w->SUPER::insert(@args);
   # Now see if that is 'legal' ...
   my $max  = $w->cget('-maxwidth');
   if (length($w->get) > $max)
    {
     $w->delete($max,'end');
     $w->bell;
    }
  }

}


my $mw = MainWindow->new;

my $e  = $mw->LEntry(-maxwidth => 5, -width => 5);

$e->pack;
                 
MainLoop;

__END__