#!/usr/bin/perl
use strict;
use warnings;
use Tk;
use Tk::BrowseEntry;

my $mw=tkinit();
my $var='opt2';
my $b=$mw->BrowseEntry(-label      => "Choose:",
                       -variable   => \$var,
                       -style      => 'MSWin32',
                       -listheight => 5,
                       -browsecmd  => sub{ print STDOUT $var."\n" }
);
$b->insert("end", "opt1");
$b->insert("end", "opt2");
$b->insert("end", "opt3");
$b->insert("end", "opt4");
$b->insert("end", "opt5");
$b->insert("end", "opt6");
$b->insert("end", "opt7");
$b->insert("end", "opt8");
$b->insert("end", "opt9");
$b->insert("end", "optA");
$b->insert("end", "optB");
$b->insert("end", "optC");

#my $lbx=$b->Subwidget("slistbox")->Subwidget("yscrollbar");
#my $lbx=$b->Subwidget("slistbox")->Subwidget("scrolled");
#my $lbx=$b->Subwidget("slistbox")->Subwidget("listbox");
#my $lbx=$b->Subwidget("choices");
my $lbx=$b->Subwidget("slistbox");
$lbx->bind('<MouseWheel>',[sub{$_[0]->yview('scroll',-($_[1]/120)*3,'units')}, Ev("D")]);
$b->pack;

MainLoop;