printdialog: Add an example image

diff --git a/gtk/gtkprintunixdialog.c b/gtk/gtkprintunixdialog.c
index 0e9b2fea38f522ece0f934a3a92e503349a52433..395ea381f336e805a4a2f4bc24a99b3be17b944b 100644 (file)
--- a/gtk/gtkprintunixdialog.c
+++ b/gtk/gtkprintunixdialog.c
@@ -60,6 +60,8 @@
  * `GtkPrintUnixDialog` implements a print dialog for platforms
  * which don’t provide a native print dialog, like Unix.
  *
+ * ![An example GtkPrintUnixDialog](printdialog.png)
+ *
  * It can be used very much like any other GTK dialog, at the cost of
  * the portability offered by the high-level printing API with
  * [class@Gtk.PrintOperation].