[gtk+] Some GtkAboutDialog doc additions

[Matthias Clasen <matthiasc src gnome org>]

commit 6faba61db10f9563cf7eb4328416445b30ae2c42
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Sep 5 00:00:24 2011 -0400

    Some GtkAboutDialog doc additions

 gtk/gtkaboutdialog.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkaboutdialog.c b/gtk/gtkaboutdialog.c
index a9e9efb..e015895 100644
--- a/gtk/gtkaboutdialog.c
+++ b/gtk/gtkaboutdialog.c
@@ -91,6 +91,10 @@
  *                        "title" _("About ExampleCode"),
  *                        NULL);
  * </programlisting></informalexample>
+ *
+ * It is also possible to show a #GtkAboutDialog like any other #GtkDialog,
+ * e.g. using gtk_dialog_run(). In this case, you might need to know that
+ * the 'Close' button returns the #GTK_RESPONSE_CANCEL response id.
  */
 
 static GdkColor default_link_color = { 0, 0, 0, 0xeeee };