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<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" xmlns:xi="http://www.w3.org/2001/XInclude" type="guide" style="task" id="gmenu.vala" xml:lang="cs">
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<info>
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<title type="text">GMenu (Vala)</title>
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<link type="guide" xref="beginner.vala#menu-combo-toolbar"/>
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<link type="seealso" xref="aboutdialog.vala"/>
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<revision version="0.1" date="2012-04-07" status="stub"/>
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<credit type="author copyright">
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<name>Ryan Lortie</name>
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<email its:translate="no">desrt@desrt.ca</email>
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<years>2012</years>
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</credit>
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<credit type="author">
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<name>Tiffany Antopolski</name>
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<email its:translate="no">tiffany.antopolski@gmail.com</email>
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</credit>
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<desc>Jednoduchá implementace GMenuModel</desc>
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</info>
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<title>GMenu</title>
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<media type="image" mime="image/png" height="200" src="media/gmenu.vala.png"/>
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<note style="important">
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Musíte používat GTK+ 3.4 nebo novější, aby tento příklad fungoval.
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</note>
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GtkApplication s jednoduchým widgetem GMenu a objekty SimpleAction
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/* Okno v aplikaci */
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public class Window : Gtk.ApplicationWindow {
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/* Konstruktor */
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public Window (Application app) {
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Object (application: app, title: "Gmenu Example");
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var about_action = new SimpleAction ("about", null);
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/* Napojí signál "activate" na obsluhu
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* signálu (neboli funkci zpětného volání)
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*/
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about_action.activate.connect (this.about_cb);
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/* Přidá akci do tohoto okna */
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this.add_action (about_action);
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this.show ();
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}
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/* Zpracování signálu pro signál "activate"' od SimpleAction */
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void about_cb (SimpleAction simple, Variant? parameter) {
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print ("This does nothing. It is only a demonstration.\n");
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}
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}
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/* Toto je aplikace */
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public class Application : Gtk.Application {
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/* Konstruktor */
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public Application () {
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Object (application_id: "org.example.application");
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}
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/* Přepíše signál "activate" z GLib.Application */
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protected override void activate () {
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/* Vytvoří nové okno pro tuto aplikaci */
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new Window (this);
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}
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/* Přepíše signál "startup" z GLib.Application */
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protected override void startup () {
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base.startup ();
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var menu = new Menu ();
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menu.append ("About", "win.about");
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menu.append ("Quit", "app.quit");
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this.app_menu = menu;
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var quit_action = new SimpleAction ("quit", null);
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quit_action.activate.connect (this.quit);
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this.add_action (quit_action);
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}
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}
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/* Funkce main vytvoří aplikaci a spustí ji */
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int main (string[] args) {
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return new Application ().run (args);
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}
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V této ukázce se používá následující:
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<list>
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<item><link href="http://www.valadoc.org/gtk+-3.0/Gtk.Application.html">Gtk.Application</link> </item>
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<item><link href="http://www.valadoc.org/gtk+-3.0/Gtk.ApplicationWindow.html">Gtk.ApplicationWindow</link> </item>
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<item><link href="http://www.valadoc.org/gio-2.0/GLib.Menu.Menu.html">Menu</link> </item>
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<item><link href="http://www.valadoc.org/gio-2.0/GLib.Menu.append.html">append</link> </item>
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<item><link href="http://www.valadoc.org/gio-2.0/GLib.SimpleAction.html">SimpleAction</link> </item>
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<item><link href="http://www.valadoc.org/gio-2.0/GLib.ActionMap.add_action.html">add_action</link> </item>
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</list>
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</page>
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