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<div class="titlepage"><div><div><h2 class="title">
<a name="gtk-migrating-GtkAboutDialog"></a>Migrating from GnomeAbout to GtkAboutDialog</h2></div></div></div>
<p>
Since version 2.6, GTK+ provides the <a href="GtkAboutDialog.html" title="GtkAboutDialog"><span class="type">GtkAboutDialog</span></a> widget as a replacement for
the <span class="structname">GnomeAbout</span> dialog in the libgnomeui library.
</p>
<p>
<a href="GtkAboutDialog.html" title="GtkAboutDialog"><span class="type">GtkAboutDialog</span></a> supports all features found in <span class="structname">GnomeAbout</span>.
The <span class="structname">GtkAboutDialog</span> API is bigger, since it follows
the GTK+ policy to have getters and setters for all widget properties,
but it isn't much more complex than <span class="structname">GnomeAbout</span>.
</p>
<p>
To convert an application that uses <span class="structname">GnomeAbout</span> to
<span class="structname">GtkAboutDialog</span>, as a first step, replace calls
like
</p>
<div class="informalexample"><pre class="programlisting">
const gchar *documentors[] = {
"Documenter 1",
"Documenter 2",
NULL
};
const gchar *documentors[] = {
"Author 1",
"Author 2",
NULL
};
GtkWidget *about = gnome_about_new ("GNOME Test Program", VERSION,
"(C) 1998-2001 The Free Software Foundation",
"Program to display GNOME functions.",
authors,
documenters,
_("translator-credits"),
"logo.png");
</pre></div>
<p>
by something like
</p>
<div class="informalexample"><pre class="programlisting">
GdkPixbuf *logo = gdk_pixbuf_new_from_file ("logo.png", NULL);
GtkWidget *about = g_object_new (GTK_TYPE_ABOUT_DIALOG,
"name", "GNOME Test Program",
"version", VERSION,
"copyright", "(C) 1998-2001 The Free Software Foundation",
"comments", "Program to display GNOME functions.",
"authors", authors,
"documenters", documenters,
"translator-credits", _("translator-credits"),
"logo", logo,
NULL);
g_object_unref (pixbuf);
</pre></div>
<p>
If the <a
href="../gobject/gobject-The-Base-Object-Type.html#g-object-new"
><code class="function">g_object_new()</code></a> construction scares you, you can also use
<a href="GtkAboutDialog.html#gtk-about-dialog-new"><code class="function">gtk_about_dialog_new()</code></a> to construct the dialog and then use the setters for
the individual properties.
</p>
<p>
Once you are done with the initial conversion, you may want to look into
using some of the features of <span class="structname">GtkAboutDialog</span>
which are not present in <span class="structname">GnomeAbout</span>.
</p>
<div class="itemizedlist"><ul type="disc">
<li><p>
You can specify license information with the
<a href="GtkAboutDialog.html#GtkAboutDialog--license">license</a> property
</p></li>
<li><p>
You can add separate credits for artists with the
<a href="GtkAboutDialog.html#GtkAboutDialog--artists">artists</a> property
</p></li>
<li><p>
You can add a pointer to the website of your application, using the
<a href="GtkAboutDialog.html#GtkAboutDialog--website">website</a> and
<a href="GtkAboutDialog.html#GtkAboutDialog--website-label">website-label</a>
properties.
</p></li>
<li><p>
If your credits contain email addresses or URLs, you can turn them
into clickable links using <a href="GtkAboutDialog.html#gtk-about-dialog-set-email-hook"><code class="function">gtk_about_dialog_set_email_hook()</code></a> and
<a href="GtkAboutDialog.html#gtk-about-dialog-set-url-hook"><code class="function">gtk_about_dialog_set_url_hook()</code></a>.
</p></li>
</ul></div>
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