require 'gtk'

window = Gtk::Window.new(Gtk::WINDOW_TOPLEVEL)

mbar = Gtk::MenuBar.new
filemitem = Gtk::MenuItem.new('File')
filemitem.show
filemenu = Gtk::Menu.new
item1 = Gtk::MenuItem.new('Open')
item1.show
filemenu.add item1
item2 = Gtk::MenuItem.new('Save')
item2.show
filemenu.add item2
item3 = Gtk::MenuItem.new('Quit')
item3.show
filemenu.add item3
filemitem.set_submenu filemenu
mbar.append filemitem
mbar.show

vadj = Gtk::Adjustment.new(0,0,0,0,0,0)
text = Gtk::Text.new(nil, vadj)
vs = Gtk::VScrollbar.new(vadj)
text.set_editable true

hbox = Gtk::HBox.new(false, 0)
hbox.pack_start text, true, true, 0
hbox.pack_start vs, false, false, 0

vbox = Gtk::VBox.new(false, 0)
vbox.pack_start mbar, false, false, 0
vbox.pack_start hbox, true, true, 0
vbox.show

window.add vbox
text.show
vs.show
hbox.show
window.show
Gtk.main