sub OnInit {
  my $self = shift;
  $$cancel = LoginWindow->new(
    $user,
    $passwd,
    undef,         # Parent window
    -1,            # Window id
    'Login',       # Title
    [200,200],     # position X, Y
    [200,150],     # size X, Y
    wxCAPTION | wxSYSTEM_MENU
  )->ShowModal;
}

##</code><code>##

  my $ret = Wx::_App::Start($this,$this->can('OnInit'));
  Wx::_croak( 'OnInit must return a true return value' )
    unless $ret || Wx::wxMAC(); # why does OnInit always return 0 on Mac?