perl-examples/docs/22_gui.md

GUI - Tk

sudo apt install perl-tk

#!/usr/bin/perl
use strict;
use utf8;
use Tk;

my $mw = MainWindow->new;
$mw->Label(-text => '안녕!')->pack;
$mw->Button(
    -text    => '종료',
    -command => sub { exit },
)->pack;
MainLoop;

https://metacpan.org/pod/distribution/Tk/pod/UserGuide.pod

Layouts

pack

grid

place

Widgets

Button

Checkbutton

Radiobutton

Label

Entry

Scrollbar

Listbox

Text

Canvas

Scale

Menubutton

Menu

Optionmenu

Frame

Toplevel