...
 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;
...