Add a Frame to the DialogBox, then pack a Scrolled Pane into the Frame, then add anything you want to the Pane.
#!/usr/bin/perl
use warnings;
use strict;
use Tk;
use Tk::DialogBox;
use Tk::Text;
use Tk::Pane;
my $mw = tkinit;
$mw->fontCreate('big',
-weight=>'bold',
-size=>18);
my $d = $mw->DialogBox(-buttons => ["OK", "Cancel"]);
my $f = $d->add('Frame')->pack(-expand => 1, -fill => 'both');
my $p = $f->Scrolled('Pane', -scrollbars => 'osoe')->pack(
-expand => 1,
-fill => 'both',
);
my $text = $p->Text(-bg => 'white',
-font => 'big',
-height => 100,
)->pack;
for ( 1 .. 100){
$text->insert('end', "$_\n");
}
$d->Show;
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