How to use the etk.Window function in etk

#!/usr/bin/python

import etk

icon = etk.Image()
icon.set_from_file('icon.png')

box = etk.VBox()
box.append(icon, etk.VBox.START, etk.VBox.FILL, 0)

w = etk.Window(title="Hello World", size_request=(300, 300), child=box)
w.on_destroyed(lambda x: etk.main_quit())
w.show_all()

etk.main()

button = etk.Button(label="Previous")
button.set_from_stock(etk.c_etk.StockEnums.GO_PREVIOUS)
button.on_clicked(prev_cb, notebook)
hbox.append(button, etk.HBox.START, etk.HBox.FILL, 0)

button = etk.Button(label="Next")
button.set_from_stock(etk.c_etk.StockEnums.GO_NEXT)
button.on_clicked(next_cb, notebook)
hbox.append(button, etk.HBox.START, etk.HBox.FILL, 0)

button = etk.ToggleButton(label="Hide tabs")
button.on_toggled(hide_tabs_toggled_cb, notebook)
hbox.append(button, etk.HBox.START, etk.HBox.FILL, 0)

w = etk.Window(title="Etk Notebook Example", size_request=(300, 300), child=main_vbox)
w.show_all()

def on_destroyed(obj):
    etk.main_quit()
w.connect("destroyed", on_destroyed)

etk.main()

ce = etk.ComboboxEntry()

for t in ["Alpha", "Beta", "Gamma"]:
    ce.item_append(t)

def show_active_item(c):
    print c.active_item.field_get(0)

ce.on_active_item_changed(show_active_item)

# Main
box = etk.VBox()
box.append(combo, etk.VBox.START, etk.VBox.FILL, 0)
box.append(ce, etk.VBox.END, etk.VBox.FILL, 0)

w = etk.Window(title="Hello World", size_request=(300, 200), child=box)
w.on_destroyed(lambda x: etk.main_quit())
w.show_all()

etk.main()

#!/usr/bin/python

import etk

b1 = etk.Button(label="Button #1")
b2 = etk.Button(label="Button #2")

w = etk.Window(title="Swapping buttons", size_request=(200, 50), child=b1)
w.on_destroyed(lambda x: etk.main_quit())

def show(obj, child):
    print "Added: " + child.label
    return True

w.on_child_added(show)

def swap(obj, other):
    w.child = other
    other.show()
    return True

b1.on_clicked(swap, b2)
b2.on_clicked(swap, b1)

e.text = ""

def click(b, e):
    clear(e)

entry.text = 'some text'
entry.on_text_activated(clear)

bye = etk.Button(label="Click")
bye.on_clicked(click, entry)

box = etk.VBox()
box.append(entry, etk.VBox.START, etk.VBox.FILL, 0)
box.append(bye, etk.VBox.END, etk.VBox.NONE, 0)

w = etk.Window(title="Hello World", size_request=(300, 300), child=box)
w.on_destroyed(lambda x: etk.main_quit())
w.show_all()

etk.main()

return True

pos = 0
for name in ['One', 'Two', 'Three', 'Four', 'Five', 'Six']:
    b = etk.Button(label=name)
    b.connect("clicked", on_clicked)
    row = pos / cols
    col = pos % cols
    t.attach_default(b, col, col, row, row)
    pos += 1

bye = etk.Button(label="Hello World")
bye.connect("clicked", lambda x: etk.main_quit())
t.attach_default(bye, 0, 2, 2, 2)

w = etk.Window(title="Hello World", size_request=(300, 300), child=t)
w.show_all()

def on_destroyed(obj):
    etk.main_quit()
w.connect("destroyed", on_destroyed)


etk.main()

return True
make_button("Remove selected", remove_selected, lst)

bsbox = etk.VBox()
for b in bs:
    bsbox.append(b, etk.VBox.START, etk.VBox.FILL, 0)


# Main
box = etk.HBox()

box.append(bsbox, etk.HBox.START, etk.HBox.FILL, 0)
box.append(lst, etk.HBox.START, etk.HBox.EXPAND_FILL, 0)


w = etk.Window(title="Hello World", child=box)
w.on_destroyed(lambda x: etk.main_quit())
w.show_all()

etk.main()

#!/usr/bin/python

import etk
import ecore

c = etk.Canvas()


w = etk.Window(title="Button", size_request=(200, 200), child=c)
w.show_all()

evas = c.toplevel_evas_get()
r = evas.Rectangle(color="#ff0000", size=(50,50))
r.show()
bla = c.object_add(r)

print bla

def mover(obj):
    (x, y) = c.child_position_get(bla)
    c.move(bla, x + 1, y + 1)
    return True

ecore.animator_add(mover, r)

import etk

counter = 0
msg = "Button clicked %d times"
b = etk.Button(label=msg % counter)
b_block = etk.Button(label="Block action")
b_block_false = etk.Button(label="Block other action")
b_unblock = etk.Button(label="Unblock action")

v = etk.VBox()
v.append(b, etk.VBox.END, etk.VBox.NONE, 0)
v.append(b_block, etk.VBox.END, etk.VBox.NONE, 0)
v.append(b_block_false, etk.VBox.END, etk.VBox.NONE, 0)
v.append(b_unblock, etk.VBox.END, etk.VBox.NONE, 0)

w = etk.Window(title="Button", size_request=(200, 200), child=v)
w.show_all()

def count(b, a):
    global counter
    counter += 1
    b.label = msg % counter
    print "button %s clicked" % b
    return True
b.on_clicked(count, 13)

def do_block(button, b):
    b.block("clicked", count, 13)
    return True
b_block.on_clicked(do_block, b)

def do_block_false(button, b):