var
  c: shortint;
  s: string;
begin
  s := 'A';
  with DBNavigator1 do
    for c := 0 to ControlCount - 1 do
      if Controls[c] is TNavButton then
        with TNavButton(Controls[c]) do
        begin
          ListBox1.Items.Add(Name);
          Glyph := nil;
          Caption := s;
          Inc(s[1]);
        end;
end;