#!/usr/bin/perl

use strict;
use warnings;

use Tk;
use Tk::Tree;
use Tk::Table;
use Tk::Label;
use Tk::Entry;

my $mw = tkinit;
my $tree   = $mw->Tree( -browsecmd => \&change )->pack;
my $table  = $mw->Table->pack;

my %labels = (
    test  => sub { my $wdgt = shift; return [$wdgt->Label( -text => 'test' ), $wdgt->Entry()] },
    hallo => sub { my $wdgt = shift; return [$wdgt->Label( -text => 'hello world' ), $wdgt->Entry()] },
);

for my $key ( keys %labels ){
    $tree->add( $key , -text => $key );
}

MainLoop;

sub change{
    my $item = shift;
    $table->clear;
    my $widgets = $labels{$item}->($table);
    $table->put(0,$_, $widgets->[$_]) for 0..$#$widgets;
    # $labels{$item}->pack;
}