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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="aboutdialog.vala" xml:lang="pt-BR">
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<info>
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<title type="text">AboutDialog (Vala)</title>
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<link type="guide" xref="beginner.vala#windows"/>
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<link type="seealso" xref="button.vala"/>
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<link type="seealso" xref="linkbutton.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>Display information about an application</desc>
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<mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
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<mal:name>Rafael Ferreira</mal:name>
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<mal:email>rafael.f.f1@gmail.com</mal:email>
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<mal:years>2013</mal:years>
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</mal:credit>
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</info>
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<title>AboutDialog</title>
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<media type="image" mime="image/png" src="media/aboutdialog_GMenu.png"/>
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An AboutDialog example using Gtk.ApplicationWindow and Menu
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<note>You need to be running Gtk3.4 or later for this to work </note>
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/* A window in the application */
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public class Window : Gtk.ApplicationWindow {
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/* The constructor */
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public Window (Application app) {
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Object (application: app, title: "AboutDialog Example");
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var about_action = new SimpleAction ("about", null);
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about_action.activate.connect (this.about_cb);
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this.add_action (about_action);
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this.show_all ();
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}
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/* This is the callback function connected to the 'activate' signal
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* of the SimpleAction about_action.
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*/
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void about_cb (SimpleAction simple, Variant? parameter) {
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string[] authors = { "GNOME Documentation Team", null };
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string[] documenters = { "GNOME Documentation Team", null };
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Gtk.show_about_dialog (this,
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"program-name", ("GtkApplication Example"),
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"copyright", ("Copyright \xc2\xa9 2012 GNOME Documentation Team"),
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"authors", authors,
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"documenters", documenters,
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"website", "http://developer.gnome.org",
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"website-label", ("GNOME Developer Website"),
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null);
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}
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}
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/* This is the Application */
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public class Application : Gtk.Application {
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/* Here we override the activate signal of GLib.Application */
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protected override void activate () {
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new Window (this);
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}
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/* Here we override the startup signal of 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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/* The constructor */
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public Application () {
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Object (application_id: "org.example.application");
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}
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}
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/* main function creates Application and runs it */
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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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In this sample we used the following:
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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/gtk+-3.0/Gtk.Window.set_default_size.html">set_default_size</link> </item>
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</list>
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</page>
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