Use AdwAboutDialog

data/uk.me.bcowan.Rugby.gresource.xml

@@ -9,6 +9,7 @@
     <file compressed="true" preprocess="xml-stripblanks">gtk/help-overlay.ui</file>
     <file compressed="true" preprocess="xml-stripblanks">gtk/prefs.ui</file>
     <file compressed="true" preprocess="xml-stripblanks">gtk/window.ui</file>
+    <file compressed="true" preprocess="xml-stripblanks">uk.me.bcowan.Rugby.metainfo.xml</file>
   </gresource>
   <gresource prefix="/uk/me/bcowan/Rugby/icons/scalable/actions/">
     <file compressed="true" preprocess="xml-stripblanks" alias="football-american-symbolic.svg">icons/football-american-symbolic.svg</file>

data/uk.me.bcowan.Rugby.metainfo.xml

@@ -3,6 +3,7 @@
   <id>uk.me.bcowan.Rugby</id>
 
   <name>Rugby</name>
+  <developer_name>Bruce Cowan</developer_name>
   <summary>Find possibilities for rugby scores</summary>
 
   <metadata_license>CC-BY-SA-4.0</metadata_license>

meson.build

@@ -20,7 +20,7 @@ gnome = import('gnome')
 
 gio_dep = dependency('gio-2.0', version: '>= 2.76')
 gtk_dep = dependency('gtk4', version: '>= 4.11.3')
-libadwaita_dep = dependency('libadwaita-1', version: '>=1.4.beta')
+libadwaita_dep = dependency('libadwaita-1', version: '>=1.5.beta')
 
 conf = configuration_data()
 

src/main.c

 /*
- * SPDX-FileCopyrightText: 2012-2022 Bruce Cowan <bruce@bcowan.me.uk>
+ * SPDX-FileCopyrightText: 2012-2024 Bruce Cowan <bruce@bcowan.me.uk>
  * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
@@ -32,14 +32,12 @@ about_activated (G_GNUC_UNUSED GSimpleAction *simple,
     GtkApplication *app = GTK_APPLICATION (user_data);
     GtkWindow *window = gtk_application_get_active_window (app);
 
-    adw_show_about_window (window,
-                           "application-icon", "football-american",
-                           "application-name", "Rugby",
-                           "copyright", "Copyright 2012–2022 Bruce Cowan",
-                           "license-type", GTK_LICENSE_GPL_3_0,
-                           "developer-name", "Bruce Cowan",
-                           "version", VERSION,
-                           NULL);
+    adw_show_about_dialog_from_appdata (GTK_WIDGET (window),
+                                        "uk/me/bcowan/Rugby/uk.me.bcowan.Rugby.metainfo.xml",
+                                        NULL,
+                                        "application-icon", "football-american",
+                                        "version", VERSION,
+                                        NULL);
 }
 
 static void