use Tk;
use Tk::widgets qw(Text);
my $mw   = MainWindow->new;
$mw->geometry("+10+10");
#my $font = 'Times';
my $font = 'fixed';
my $t    = $mw->Scrolled(Text => -font => [$font => 24, 'normal'])->pack( -fill => 'both', -expand => 1);
$file = "t/JP.dat";
open(my $fh,"<:utf8",$file) || die "Cannot open $file:$!";
while (<$fh>)
 {
  # s/[^ -~\s]/?/g;
  $t->insert('end',$_);
  $t->see('end');
  $mw->update;
 }
close($fh);

MainLoop;

##</code><code>##

0x0020:    ! " # $ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = >
0x0040:  @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^
0x0060:  ` a b c d e f g h i j k l m n o p q r s t u v w x y z { | } ~
0x8ea0:    ｡ ｢ ｣ ､ ･ ｦ ｧ ｨ ｩ ｪ ｫ ｬ ｭ ｮ ｯ ｰ ｱ ｲ ｳ ｴ ｵ ｶ ｷ ｸ ｹ ｺ ｻ ｼ ｽ ｾ
0x8ec0:  ﾀ ﾁ ﾂ ﾃ ﾄ ﾅ ﾆ ﾇ ﾈ ﾉ ﾊ �‹ ﾌ ﾍ ﾎ ﾏ ﾐ ﾑ ﾒ ﾓ ﾔ ﾕ ﾖ ﾗ ﾘ ﾙ ﾚ �› ﾜ ﾝ ﾞ