$TOP->optionAdd("*Cursor",'');

##</code><code>##

sub help_menuitems
{
 [['command',$messages[44],-command=>[\&help],-accelerator=>'F1']];
}
$help=$menubar->Menubutton(-cursor=>'',-text=>$messages[50],-menuitems => help_menuitems,-tearoff=>0,-state=>'active');
$help->pack(qw/-side left/);

##</code><code>##

...
 my $cur = $Tk::postedMb;
 if (defined $cur)
  {
   Tk::Menu->Unpost(undef); # fixme
  }
 $Tk::cursor = $w->cget('-cursor');
 $Tk::relief = $w->cget('-relief');
 $w->configure('-cursor','arrow');
 $w->configure('-relief','raised');
 $Tk::postedMb = $w;
 $Tk::focus = $w->focusCurrent;
 $menu->activate('none');
 $menu->GenerateMenuSelect;
...