$w{mw} = MainWindow->new;

################  aded for font control ############3
use Tk::FontDialog;

my $fd = $w{mw}->FontDialog(-nicefont => 0,
		       -title => 'Select Font',
		       -applycmd => \&apply_font,
		       -familylabel => 'Schrift~familie',
		       -fixedfontsbutton => 1,
		       -nicefontsbutton => 1,
		      );


my $b = $w{mw}->Button(-text => 'Choose Font',
                  -bg => 'lightyellow',
                  -command => sub {
                     my $font = $fd->Show;
                      apply_font($font);
                  })->pack;

sub apply_font {
    my $font = shift;
    if (defined $font) {
        $b->configure(-font => $font);
        $w{mw}->RefontTree(-font => $font, -canvas => 1);
    }
}
############### end of font control ######################

$w{mw}->geometry('600x480');