tests: Fix testdnd popup

Don't use GtkContainer API for GtkWindow.

diff --git a/tests/testdnd.c b/tests/testdnd.c
index f6659a54c4674e53bb4a28440b6a5ec17af9a4d9..b81f938dcaa9536d2441e1328980fb048d2232d1 100644 (file)
--- a/tests/testdnd.c
+++ b/tests/testdnd.c
@@ -463,7 +463,7 @@ popup_cb (gpointer data)
                g_signal_connect (dest, "drop", G_CALLBACK (popup_drop), NULL);
                 gtk_widget_add_controller (button, GTK_EVENT_CONTROLLER (dest));
              }
-         gtk_container_add (GTK_CONTAINER (popup_window), grid);
+         gtk_window_set_child (GTK_WINDOW (popup_window), grid);
        }
       gtk_widget_show (popup_window);
       popped_up = TRUE;