+/**
+ * gtk_application_get_active_window:
+ * @application: a #GtkApplication
+ *
+ * Gets the "active" window for the application.
+ *
+ * The active window is the one that was most recently focused (within
+ * the application). This window may not have the focus at the moment
+ * if another application has it -- this is just the most
+ * recently-focused window within this application.
+ *
+ * Returns: (transfer none): the active window
+ *
+ * Since: 3.6
+ **/
+GtkWindow *
+gtk_application_get_active_window (GtkApplication *application)
+{
+ g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
+
+ return application->priv->windows ? application->priv->windows->data : NULL;
+}
+