add stack.py

stack.py

@@ -0,0 +1,35 @@
+#!/usr/bin/env python3
+
+import gi
+gi.require_version("Gtk", "3.0")
+from gi.repository import Gtk
+
+class MyWindow(Gtk.Window):
+
+    def __init__(self):
+        Gtk.Window.__init__(self, title = "Hello World!")
+
+        self.box = Gtk.Box(orientation = Gtk.Orientation.VERTICAL, spacing = 6)
+        self.add(self.box)
+
+        stack = Gtk.Stack()
+        stack.set_transition_type(Gtk.StackTransitionType.SLIDE_LEFT_RIGHT)
+        stack.set_transition_duration(1000)
+
+        checkbutton = Gtk.CheckButton("Click me!")
+        stack.add_titled(checkbutton, "check", "CheckButton")
+
+        label = Gtk.Label()
+        label.set_markup("<big>A fancy label</big>")
+        stack.add_titled(label, "label", "Label")
+
+        stack_switcher = Gtk.StackSwitcher()
+        stack_switcher.set_stack(stack)
+        self.box.pack_start(stack_switcher, True, True, 0)
+        self.box.pack_start(stack, True, True, 0)
+
+window = MyWindow()
+window.connect("delete-event", Gtk.main_quit)
+window.show_all()
+
+Gtk.main()