From 7ba0083fc9423619f160a13dc181d5776f55df7d Mon Sep 17 00:00:00 2001
From: William Jon McCann <william.jon.mccann@gmail.com>
Date: Mon, 9 Dec 2013 09:55:08 +0100
Subject: [PATCH] demo: only set transient if demo returns a toplevel

---
 demos/gtk-demo/main.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/demos/gtk-demo/main.c b/demos/gtk-demo/main.c
index 9de99cd937..4e239d5394 100644
--- a/demos/gtk-demo/main.c
+++ b/demos/gtk-demo/main.c
@@ -142,8 +142,11 @@ activate_run (GSimpleAction *action,
           cbdata->model = model;
           cbdata->path = gtk_tree_model_get_path (model, &iter);
 
-          gtk_window_set_transient_for (GTK_WINDOW (demo), GTK_WINDOW (window));
-          gtk_window_set_modal (GTK_WINDOW (demo), TRUE);
+          if (gtk_widget_is_toplevel (demo))
+            {
+              gtk_window_set_transient_for (GTK_WINDOW (demo), GTK_WINDOW (window));
+              gtk_window_set_modal (GTK_WINDOW (demo), TRUE);
+            }
 
           g_signal_connect (demo, "destroy",
                             G_CALLBACK (window_closed_cb), cbdata);