1from gi.repository import Gtk 2import sys 3 4distros = [["Select distribution"], ["Fedora"], ["Mint"], ["Suse"]] 5 6 7class MyWindow(Gtk.ApplicationWindow): 8 9 def __init__(self, app): 10 Gtk.Window.__init__(self, title="Welcome to GNOME", application=app) 11 self.set_default_size(200, -1) 12 self.set_border_width(10) 13 14 # the data in the model, of type string 15 listmodel = Gtk.ListStore(str) 16 # append the data in the model 17 for i in range(len(distros)): 18 listmodel.append(distros[i]) 19 20 # a combobox to see the data stored in the model 21 combobox = Gtk.ComboBox(model=listmodel) 22 23 # a cellrenderer to render the text 24 cell = Gtk.CellRendererText() 25 26 # pack the cell into the beginning of the combobox, allocating 27 # no more space than needed 28 combobox.pack_start(cell, False) 29 # associate a property ("text") of the cellrenderer (cell) to a column (column 0) 30 # in the model used by the combobox 31 combobox.add_attribute(cell, "text", 0) 32 33 # the first row is the active one by default at the beginning 34 combobox.set_active(0) 35 36 # connect the signal emitted when a row is selected to the callback 37 # function 38 combobox.connect("changed", self.on_changed) 39 40 # add the combobox to the window 41 self.add(combobox) 42 43 def on_changed(self, combo): 44 # if the row selected is not the first one, write its value on the 45 # terminal 46 if combo.get_active() != 0: 47 print("You chose " + str(distros[combo.get_active()][0]) + ".") 48 return True 49 50 51class MyApplication(Gtk.Application): 52 53 def __init__(self): 54 Gtk.Application.__init__(self) 55 56 def do_activate(self): 57 win = MyWindow(self) 58 win.show_all() 59 60 def do_startup(self): 61 Gtk.Application.do_startup(self) 62 63app = MyApplication() 64exit_status = app.run(sys.argv) 65sys.exit(exit_status) 66