Add menu bar example

Author: GuillaumeGomez

Cargo.toml

@@ -56,3 +56,6 @@ name = "multithreading_context"
 
 [[bin]]
 name = "simple_treeview"
+
+[[bin]]
+name = "menu_bar"

src/menu_bar.rs

@@ -0,0 +1,85 @@
+//! # TreeView Sample
+//!
+//! This sample demonstrates how to create a TreeView with either a ListStore or TreeStore.
+
+extern crate glib;
+extern crate gtk;
+extern crate gdk_pixbuf;
+
+use gtk::{
+    BoxExt, ContainerExt, Dialog, DialogExt, Inhibit, Label, Menu, MenuBar, MenuItem, MenuItemExt,
+    MenuShellExt, WidgetExt, WidgetSignals, Window, WindowExt, WindowPosition, WindowType
+};
+
+fn main() {
+    if gtk::init().is_err() {
+        println!("Failed to initialize GTK.");
+        return;
+    }
+
+    let window = Window::new(WindowType::Toplevel);
+
+    window.set_title("MenuBar example");
+    window.set_position(WindowPosition::Center);
+    window.set_size_request(400, 400);
+
+    window.connect_delete_event(|_, _| {
+        gtk::main_quit();
+        Inhibit(false)
+    });
+
+    let h_box = gtk::Box::new(gtk::Orientation::Vertical, 10);
+
+    let menu = Menu::new();
+    let menu_bar = MenuBar::new();
+    let file = MenuItem::new_with_label("File");
+    let about = MenuItem::new_with_label("About");
+    let quit = MenuItem::new_with_label("Quit");
+
+    menu.append(&about);
+    menu.append(&quit);
+    file.set_submenu(Some(&menu));
+    menu_bar.append(&file);
+
+    let other_menu = Menu::new();
+    let sub_other_menu = Menu::new();
+    let other = MenuItem::new_with_label("Another");
+    let sub_other = MenuItem::new_with_label("Sub another");
+    let sub_other2 = MenuItem::new_with_label("Sub another 2");
+    let sub_sub_other2 = MenuItem::new_with_label("Sub sub another 2");
+    let sub_sub_other2_2 = MenuItem::new_with_label("Sub sub another2 2");
+
+    sub_other_menu.append(&sub_sub_other2);
+    sub_other_menu.append(&sub_sub_other2_2);
+    sub_other2.set_submenu(Some(&sub_other_menu));
+    other_menu.append(&sub_other);
+    other_menu.append(&sub_other2);
+    other.set_submenu(Some(&other_menu));
+    menu_bar.append(&other);
+
+    quit.connect_activate(|_| {
+        gtk::main_quit();
+    });
+
+    let label = Label::new(Some("MenuBar example"));
+
+    h_box.pack_start(&menu_bar, false, false, 0);
+    h_box.pack_start(&label, true, true, 0);
+    window.add(&h_box);
+    window.show_all();
+
+    about.connect_activate(move |_| {
+        let p = Dialog::new_with_buttons(Some("About"),
+                                         Some(&window),
+                                         gtk::DIALOG_MODAL,
+                                         &[("Ok", gtk::ResponseType::Ok as i32)]);
+        let area = p.get_content_area();
+        let label = Label::new(Some("MenuBar example"));
+        area.add(&label);
+        p.show_all();
+        p.connect_response(|w, _| {
+            w.destroy();
+        });
+    });
+    gtk::main();
+}