#!/usr/bin/perl -w

use strict;
use Wx;

package MyFrame;
use Wx qw[:everything];
use base 'Wx::Frame';

my $abbruch;

sub new {
   my $class = shift;
   my $frame = $class->SUPER::new( undef, -1, 'StopLoop', [-1, -1], [175, 150] );
      $frame->{panel} = Wx::Panel->new( $frame, -1, );      
      $frame->{bt_start} = Wx::Button->new( $frame->{panel}, -1, 'starten', [-1, -1], [150, -1] );
      $frame->{txt_status} = Wx::TextCtrl->new( $frame->{panel}, -1, "", [-1, -1], [150, -1] );
      $frame->{bt_stop} = Wx::Button->new( $frame->{panel}, -1, 'abbrechen', [-1, -1], [150, -1] );   
      $frame->{sizer_1} = Wx::BoxSizer->new(wxVERTICAL);
       $frame->{sizer_2} = Wx::BoxSizer->new(wxVERTICAL);   
       $frame->{sizer_1}->Add($frame->{panel}, 1, wxEXPAND, 0);   
       $frame->{sizer_2}->Add($frame->{bt_start}, 0, wxALL|wxALIGN_CENTER_HORIZONTAL, 10);
       $frame->{sizer_2}->Add($frame->{txt_status}, 0, wxALL|wxALIGN_CENTER_HORIZONTAL, 10);
       $frame->{sizer_2}->Add($frame->{bt_stop}, 0, wxALL|wxALIGN_CENTER_HORIZONTAL, 10);      
       $frame->SetSizer($frame->{sizer_1});
       $frame->{panel}->SetSizer($frame->{sizer_2});
   
    Wx::Event::EVT_BUTTON($frame, $frame->{bt_start}->GetId, \&starte_schleife);
    Wx::Event::EVT_BUTTON($frame, $frame->{bt_stop}->GetId, \&abbrechen_schleife);
   
   return $frame;
}

sub starte_schleife{
   my $frm = shift;
   
   for(my $i=1; $i<=10; $i++){
      $frm->{txt_status}->SetValue("$i. Schleifendurchlauf");
      $frm->{txt_status}->Update;
      sleep(1);
      last if($abbruch);
   }
}

sub abbrechen_schleife{
   $abbruch = 1;
}
1;



package MyApp;    
use base 'Wx::App';
    
sub OnInit {
  my $frame = MyFrame->new;
  $frame->Show(1);
}
1;



package main;
    
my $wxapp = MyApp->new;
$wxapp->MainLoop;