<?xml version="1.0" encoding="utf-8"?>
<page xmlns="http://projectmallard.org/1.0/" type="guide" style="task" id="aboutdialog.vala" xml:lang="fr">
  <info>
    <link type="guide" xref="beginner.vala#windows"/>
    <revision version="0.1" date="2012-04-07" status="stub"/>

    <credit type="author copyright">
      <name>Ryan Lortie</name>
      <email>desrt@desrt.ca</email>
      <years>2012</years>
    </credit>

    <credit type="author">
      <name>Tiffany Antopolski</name>
      <email>tiffany.antopolski@gmail.com</email>
    </credit>


    <desc>Display information about an application</desc>
  </info>

  <title>AboutDialog</title>
  <media type="image" mime="image/png" src="media/aboutdialog.png"/>
  <p>An AboutDialog example using Gtk.Application</p>
  <note><p><em style="bold">You need to be running Gtk3.4 or later for this to work</em></p></note>
  
      <code mime="text/x-vala" style="numbered"><![CDATA[
//A window in the application
public class Window : Gtk.ApplicationWindow {
	public Window (Application app) {
		Object (application: app, title: "AboutDialog Example");
		this.set_default_size (400, 200);
		var button = new Gtk.Button.with_label ("About");
		button.clicked.connect (about_clicked);
		this.add (button);

		this.show_all ();
	}

	void about_clicked () {
		string[] authors = { "GNOME Documentation Team", null };
		string[] documenters = {"GNOME Documentation Team", null };

		Gtk.show_about_dialog (this,
	                       "program-name", ("AboutDialog Example"),
	                       "copyright", ("Copyright \xc2\xa9 2012 GNOME Documentation Team"),
	                       "authors", authors,
	                       "documenters", documenters,
	                       "website", "http://developer.gnome.org",
	                       "website-label", ("GNOME Developer Website"),
	                       null);
	}
}

//This is the Application
public class Application : Gtk.Application {
	protected override void activate () {
		new Window (this);
	}

	public Application () {
		Object (application_id: "org.example.application");
	}
}

//main function creates Application and runs it
int main (string[] args) {
	return new Application ().run (args);
}
]]></code>
<p>
  In this sample we used the following:
</p>
<list>
  <item><p><link href="http://references.valadoc.org/#!api=gtk+-3.0/Gtk.Application">Gtk.Application</link></p></item>
  <item><p><link href="http://references.valadoc.org/#!api=gtk+-3.0/Gtk.ApplicationWindow">Gtk.ApplicationWindow</link></p></item>
  <item><p><link href="http://www.valadoc.org/#!api=gtk+-3.0/Gtk.Window.set_default_size">set_default_size</link></p></item>
  <item><p><link href="http://www.valadoc.org/#!api=gtk+-2.0/Gtk.Button.Button.with_label">Gtk.Button.with_label</link></p></item>
</list>
</page>
