require 'gtk'

def create_menu(depth)
  return nil if depth < 1
  
  menu = Gtk::Menu::new()
  group = nil
  submenu = nil

  for i in 0..4
    buf = sprintf("item %2d - %d", depth, i+1)
#    menuitem = Gtk::MenuItem::new(buf)
    menuitem = Gtk::RadioMenuItem.new(group, buf)
    group = menuitem.group
    if depth % 2
      menuitem.set_show_toggle TRUE
    end
    menu.append menuitem
    menuitem.show
    if depth > 1
      menuitem.set_submenu create_menu(depth - 1)
    end
  end
  return menu
end

window = Gtk::Window::new(Gtk::WINDOW_TOPLEVEL)
window.signal_connect("destroy") do
  exit
end
window.signal_connect("delete_event") do
  exit
end
window.set_title("menus")
window.border_width(0)

box1 = Gtk::VBox::new(FALSE, 0)
window.add box1
box1.show

menubar = Gtk::MenuBar::new()
box1.pack_start menubar, FALSE, TRUE, 0
menubar.show

menu = create_menu(2)
menuitem = Gtk::MenuItem::new("test\nline2")
menuitem.set_submenu menu
menubar.append menuitem
menuitem.show

menuitem = Gtk::MenuItem::new("foo")
menuitem.set_submenu create_menu(3)
menubar.append menuitem
menuitem.show

menuitem = Gtk::MenuItem::new("bar")
menuitem.set_submenu create_menu(4)
menubar.append menuitem
menuitem.show

box2 = Gtk::VBox::new(FALSE, 10)
box2.border_width 10
box1.pack_start box2, TRUE, TRUE, 0
box2.show

optionmenu = Gtk::OptionMenu::new()
optionmenu.set_menu create_menu(1)
optionmenu.set_history 4
box2.pack_start optionmenu, TRUE, TRUE, 0
optionmenu.show

separator = Gtk::HSeparator::new()
box1.pack_start(separator, FALSE, TRUE, 0)
separator.show

box2 = Gtk::HBox::new(FALSE, 10)
box2.border_width(10)
box1.pack_start(box2, FALSE, TRUE, 0)
box2.show

button = Gtk::Button::new("close")
button.signal_connect("clicked") do
  window.destroy
  exit
end
box2.pack_start(button, TRUE, TRUE, 0)
button.set_flags(Gtk::CAN_DEFAULT);
button.grab_default
button.show

window.show

Gtk::main()
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<div class='path'>path: <a href='/ruby.git/log/?h=v1_9_3_384&amp;id=69f9992ed41920389d4185141a14f02f89a4d306'>root</a>/<a href='/ruby.git/log/tool?h=v1_9_3_384&amp;id=69f9992ed41920389d4185141a14f02f89a4d306'>tool</a>/<a href='/ruby.git/log/tool/insns2vm.rb?h=v1_9_3_384&amp;id=69f9992ed41920389d4185141a14f02f89a4d306'>insns2vm.rb</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/ruby.git/log/tool/insns2vm.rb?h=v1_9_3_384&amp;id=69f9992ed41920389d4185141a14f02f89a4d306&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2018-01-27 02:14:20 +0000'>2018-01-27</span></td><td><a href='/ruby.git/commit/tool/insns2vm.rb?h=v1_9_3_384&amp;id=c8e5796f61824bb5a232a9d338ececc6a2487997'>insns2vm.rb: make #generate_parser private</a></td><td>k0kubun</td></tr>
<tr><td><span title='2018-01-12 08:38:11 +0000'>2018-01-12</span></td><td><a href='/ruby.git/commit/tool/insns2vm.rb?h=v1_9_3_384&amp;id=8a72c77c7920d129818b7b83bb4fa669cd7e3f7d'>tool/ruby_vm support for pre-2.1 BASERUBY</a></td><td>shyouhei</td></tr>
<tr><td><span title='2018-01-12 08:38:09 +0000'>2018-01-12</span></td><td><a href='/ruby.git/commit/tool/insns2vm.rb?h=v1_9_3_384&amp;id=f6ea376317ad94a6cde01a47d0e94d709b5ab43d'>delete tool/instruction.rb (2nd try)</a></td><td>shyouhei</td></tr>
<tr><td><span title='2018-01-10 01:53:24 +0000'>2018-01-10</span></td><td><a href='/ruby.git/commit/tool/insns2vm.rb?h=v1_9_3_384&amp;id=5ad95486e63675b2bb3ad665bb2b84eb260c6f29'>merge revisions 61753:61750 61747:61740 61737:61728</a></td><td>shyouhei</td></tr>
<tr><td><span title='2018-01-09 13:30:31 +0000'>2018-01-09</span></td><td><a href='/ruby.git/commit/tool/insns2vm.rb?h=v1_9_3_384&amp;id=55317a74f7df73bb3531ade54418c4bf6f95b30b'>delete tool/instruction.rb</a></td><td>shyouhei</td></tr>
<tr><td><span title='2016-07-02 21:01:04 +0000'>2016-07-02</span></td><td><a href='/ruby.git/commit/tool/insns2vm.rb?h=v1_9_3_384&amp;id=f8d0bdedf16588f46d06158d0ca9cdf8e3de41c6'>tool: add descriptions and fix typos</a></td><td>normal</td></tr>
<tr><td><span title='2008-10-17 01:30:13 +0000'>2008-10-17</span></td><td><a href='/ruby.git/commit/tool/insns2vm.rb?h=v1_9_3_384&amp;id=68222eb41754f5288644b5d9b07e47a17badf11e'>	* tool/insns2vm.rb: remove -Kn option in shebang line because it's</a></td><td>usa</td></tr>
<tr><td><span title='2007-12-25 13:46:55 +0000'>2007-12-25</span></td><td><a href='/ruby.git/commit/tool/insns2vm.rb?h=v1_9_3_384&amp;id=dccf2b925597832f3534f3fdea707c7faf4d2bb9'>* insns2vm.rb: add encoding option to shbang.</a></td><td>ko1</td></tr>
<tr><td><span title='2007-12-22 01:34:09 +0000'>2007-12-22</span></td><td><a href='/ruby.git/commit/tool/insns2vm.rb?h=v1_9_3_384&amp;id=c375b2f4206906618e437aa645523b8f5dca0983'>* tool/insns2vm.rb: moved from lib/vm/instruction.rb.</a></td><td>ko1</td></tr>
<tr><td><span title='2007-12-22 01:26:30 +0000'>2007-12-22</span></td><td><a href='/ruby.git/commit/tool/insns2vm.rb?h=v1_9_3_384&amp;id=0fe66f38cc04ea3d5e813ababe93123f7a32faa6'>* tool/insns2vm.rb: set property.</a></td><td>nobu</td></tr>
<tr><td><span title='2007-06-29 05:52:18 +0000'>2007-06-29</span></td><td><a href='/ruby.git/commit/tool/insns2vm.rb?h=v1_9_3_384&amp;id=ca9b486294fa860c5fbe9a3b29e1cde7b4935b7c'>* tool/insns2vm.rb, lib/vm/instruction.rb: move process body</a></td><td>ko1</td></tr>
<tr><td><span title='2007-06-24 11:02:40 +0000'>2007-06-24</span></td><td><a href='/ruby.git/commit/tool/insns2vm.rb?h=v1_9_3_384&amp;id=904b9e5d547f4f9a9f3236d2633f0cb6d7aae14c'>* vm_macro.def: removed.</a></td><td>ko1</td></tr>
<tr><td><span title='2007-05-03 09:09:14 +0000'>2007-05-03</span></td><td><a href='/ruby.git/commit/tool/insns2vm.rb?h=v1_9_3_384&amp;id=d942a9a1eef1636ebd98998f8e13dd6b9e615bea'>* vm_evalbody.ci, insns.def, vm.c, tool/insns2vm.rb (rb_num_t):</a></td><td>nobu</td></tr>