text: #include <gtk/gtk.h>
  
  GtkWidget *stack;
  GtkWidget *switcher;
  GtkWidget *sidebar;
  GtkWidget *w1;
  
  static void
  set_visible_child (GtkWidget *button, gpointer data)
  {
    gtk_stack_set_visible_child (GTK_STACK (stack), GTK_WIDGET (data));
  }
  
  static void
  set_visible_child_name (GtkWidget *button, gpointer data)
  {
    gtk_stack_set_visible_child_name (GTK_STACK (stack), (const char *)data);
  }
  
  static void
  toggle_hhomogeneous (GtkWidget *button, gpointer data)
  {
    gboolean active = gtk_check_button_get_active (GTK_CHECK_BUTTON (button));
    gtk_stack_set_hhomogeneous (GTK_STACK (stack), active);
  }
  
  static void
  toggle_vhomogeneous (GtkWidget *button, gpointer data)
  {
    gboolean active = gtk_check_button_get_active (GTK_CHECK_BUTTON (button));
    gtk_stack_set_vhomogeneous (GTK_STACK (stack), active);
  }
  
  static void
  toggle_icon_name (GtkWidget *button, gpointer data)
  {
    gboolean active = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (button));
    GtkStackPage *page;
  
    page = gtk_stack_get_page (GTK_STACK (stack), w1);
    g_object_set (page, "icon-name", active ? "edit-find-symbolic" : NULL, NULL);
  }
  
  static void
  toggle_transitions (GtkWidget *combo, gpointer data)
  {
    int id = gtk_combo_box_get_active (GTK_COMBO_BOX (combo));
    gtk_stack_set_transition_type (GTK_STACK (stack), id);
  }
  
  static void
  on_back_button_clicked (GtkButton *button, gpointer user_data)
  {
    const char *seq[] = { "1", "2", "3" };
    const char *vis;
    int i;
  
    vis = gtk_stack_get_visible_child_name (GTK_STACK (stack));
  
    for (i = 1; i < G_N_ELEMENTS (seq); i++)
      {
        if (g_strcmp0 (vis, seq[i]) == 0)
          {
            gtk_stack_set_visible_child_full (GTK_STACK (stack), seq[i - 1], GTK_STACK_TRANSITION_TYPE_SLIDE_RIGHT);
            break;
          }
      }
  }
  
  static void
  on_forward_button_clicked (GtkButton *button, gpointer user_data)
  {
    const char *seq[] = { "1", "2", "3" };
    const char *vis;
    int i;
  
    vis = gtk_stack_get_visible_child_name (GTK_STACK (stack));
  
    for (i = 0; i < G_N_ELEMENTS (seq) - 1; i++)
      {
        if (g_strcmp0 (vis, seq[i]) == 0)
          {
            gtk_stack_set_visible_child_full (GTK_STACK (stack), seq[i + 1], GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT);
            break;
          }
      }
  }
  
  static void
  update_back_button_sensitivity (GtkStack *_stack, GParamSpec *pspec, GtkWidget *button)
  {
    const char *vis;
  
    vis = gtk_stack_get_visible_child_name (GTK_STACK (stack));
    gtk_widget_set_sensitive (button, g_strcmp0 (vis, "1") != 0);
  }
  
  static void
  update_forward_button_sensitivity (GtkStack *_stack, GParamSpec *pspec, GtkWidget *button)
  {
    const char *vis;
  
    vis = gtk_stack_get_visible_child_name (GTK_STACK (stack));
    gtk_widget_set_sensitive (button, g_strcmp0 (vis, "3") != 0);
  }
  
  int
  main (int argc,
        char ** argv)
  {
    GtkWidget *window, *box, *button, *hbox, *combo, *layout;
    GtkWidget *w2, *w3;
    GtkListStore* store;
    GtkWidget *tree_view;
    GtkTreeViewColumn *column;
    GtkCellRenderer *renderer;
    GtkWidget *scrolled_win;
    int i;
    GtkTreeIter iter;
    GEnumClass *class;
    GtkStackPage *page;
  
    gtk_init ();
  
    window = gtk_window_new ();
    gtk_widget_set_size_request (window, 300, 300);
  
    box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
    gtk_window_set_child (GTK_WINDOW (window), box);
  
    switcher = gtk_stack_switcher_new ();
    gtk_box_append (GTK_BOX (box), switcher);
  
    stack = gtk_stack_new ();
  
    /* Make transitions longer so we can see that they work */
    gtk_stack_set_transition_duration (GTK_STACK (stack), 1500);
  
    gtk_widget_set_halign (stack, GTK_ALIGN_START);
    gtk_widget_set_vexpand (stack, TRUE);
  
    /* Add sidebar before stack */
    sidebar = gtk_stack_sidebar_new ();
    gtk_stack_sidebar_set_stack (GTK_STACK_SIDEBAR (sidebar), GTK_STACK (stack));
    layout = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
    gtk_box_append (GTK_BOX (layout), sidebar);
    gtk_widget_set_hexpand (stack, TRUE);
    gtk_box_append (GTK_BOX (layout), stack);
  
    gtk_box_append (GTK_BOX (box), layout);
  
    gtk_stack_switcher_set_stack (GTK_STACK_SWITCHER (switcher), GTK_STACK (stack));
  
    w1 = gtk_text_view_new ();
    gtk_text_buffer_set_text (gtk_text_view_get_buffer (GTK_TEXT_VIEW (w1)),
  			    "This is a\nTest\nBalh!", -1);
  
    gtk_stack_add_titled (GTK_STACK (stack), w1, "1", "1");
  
    w2 = gtk_button_new_with_label ("Gazoooooooooooooooonk");
    gtk_stack_add_titled (GTK_STACK (stack), w2, "2", "2");
    page = gtk_stack_get_page (GTK_STACK (stack), w2);
    g_object_set (page, "needs-attention", TRUE, NULL);
  
  
    scrolled_win = gtk_scrolled_window_new ();
    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
  				  GTK_POLICY_AUTOMATIC,
  				  GTK_POLICY_AUTOMATIC);
    gtk_widget_set_size_request (scrolled_win, 100, 200);
  
  
    store = gtk_list_store_new (1, G_TYPE_STRING);
  
    for (i = 0; i < 40; i++)
      gtk_list_store_insert_with_values (store, &iter, i, 0,  "Testvalule", -1);
  
    tree_view = gtk_tree_view_new_with_model (GTK_TREE_MODEL (store));
  
    gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (scrolled_win), tree_view);
    w3 = scrolled_win;
  
    renderer = gtk_cell_renderer_text_new ();
    column = gtk_tree_view_column_new_with_attributes ("Target", renderer,
  						     "text", 0, NULL);
    gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), column);
  
    gtk_stack_add_titled (GTK_STACK (stack), w3, "3", "3");
  
    hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
    gtk_box_append (GTK_BOX (box), hbox);
  
    button = gtk_button_new_with_label ("1");
    gtk_box_append (GTK_BOX (hbox), button);
    g_signal_connect (button, "clicked", (GCallback) set_visible_child, w1);
  
    button = gtk_button_new_with_label ("2");
    gtk_box_append (GTK_BOX (hbox), button);
    g_signal_connect (button, "clicked", (GCallback) set_visible_child, w2);
  
    button = gtk_button_new_with_label ("3");
    gtk_box_append (GTK_BOX (hbox), button);
    g_signal_connect (button, "clicked", (GCallback) set_visible_child, w3);
  
    button = gtk_button_new_with_label ("1");
    gtk_box_append (GTK_BOX (hbox), button);
    g_signal_connect (button, "clicked", (GCallback) set_visible_child_name, (gpointer) "1");
  
    button = gtk_button_new_with_label ("2");
    gtk_box_append (GTK_BOX (hbox), button);
    g_signal_connect (button, "clicked", (GCallback) set_visible_child_name, (gpointer) "2");
  
    button = gtk_button_new_with_label ("3");
    gtk_box_append (GTK_BOX (hbox), button);
    g_signal_connect (button, "clicked", (GCallback) set_visible_child_name, (gpointer) "3");
  
    button = gtk_check_button_new ();
    gtk_check_button_set_active (GTK_CHECK_BUTTON (button),
                                 gtk_stack_get_hhomogeneous (GTK_STACK (stack)));
    gtk_box_append (GTK_BOX (hbox), button);
    g_signal_connect (button, "clicked", (GCallback) toggle_hhomogeneous, NULL);
  
    button = gtk_check_button_new_with_label ("homogeneous");
    gtk_check_button_set_active (GTK_CHECK_BUTTON (button),
                                 gtk_stack_get_vhomogeneous (GTK_STACK (stack)));
    gtk_box_append (GTK_BOX (hbox), button);
    g_signal_connect (button, "clicked", (GCallback) toggle_vhomogeneous, NULL);
  
    button = gtk_toggle_button_new_with_label ("Add icon");
    g_signal_connect (button, "toggled", (GCallback) toggle_icon_name, NULL);
    gtk_box_append (GTK_BOX (hbox), button);
  
    combo = gtk_combo_box_text_new ();
    class = g_type_class_ref (GTK_TYPE_STACK_TRANSITION_TYPE);
    for (i = 0; i < class->n_values; i++)
      gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (combo), class->values[i].value_nick);
    g_type_class_unref (class);
  
    gtk_box_append (GTK_BOX (hbox), combo);
    g_signal_connect (combo, "changed", (GCallback) toggle_transitions, NULL);
    gtk_combo_box_set_active (GTK_COMBO_BOX (combo), 0);
  
    hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
    gtk_box_append (GTK_BOX (box), hbox);
  
    button = gtk_button_new_with_label ("<");
    g_signal_connect (button, "clicked", (GCallback) on_back_button_clicked, stack);
    g_signal_connect (stack, "notify::visible-child-name",
                      (GCallback)update_back_button_sensitivity, button);
    gtk_box_append (GTK_BOX (hbox), button);
  
    button = gtk_button_new_with_label (">");
    gtk_box_append (GTK_BOX (hbox), button);
    g_signal_connect (button, "clicked", (GCallback) on_forward_button_clicked, stack);
    g_signal_connect (stack, "notify::visible-child-name",
                      (GCallback)update_forward_button_sensitivity, button);
  
  
    gtk_widget_show (window);
    while (TRUE)
      g_main_context_iteration (NULL, TRUE);
  
    gtk_window_destroy (GTK_WINDOW (window));
  
    return 0;
  }
  