[gtk/columnview-rubberbanding] gtk-demo: Make gridview demo use rubberbanding

[Matthias Clasen <matthiasc src gnome org>]

commit 7097a36070f308fa260df1a0f8017bbe2e892220
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Dec 23 14:57:39 2019 -0500

    gtk-demo: Make gridview demo use rubberbanding

 demos/gtk-demo/listview_colors.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/demos/gtk-demo/listview_colors.c b/demos/gtk-demo/listview_colors.c
index 233d11af5d..c67f4ee4e8 100644
--- a/demos/gtk-demo/listview_colors.c
+++ b/demos/gtk-demo/listview_colors.c
@@ -422,9 +422,10 @@ create_color_grid (void)
   g_object_unref (factory);
 
   gtk_grid_view_set_max_columns (GTK_GRID_VIEW (gridview), 24);
+  gtk_grid_view_set_enable_rubberband (GTK_GRID_VIEW (gridview), TRUE);
 
   model = G_LIST_MODEL (gtk_sort_list_model_new (create_colors_model (), NULL));
-  selection = G_LIST_MODEL (gtk_no_selection_new (model));
+  selection = G_LIST_MODEL (gtk_multi_selection_new (model));
   gtk_grid_view_set_model (GTK_GRID_VIEW (gridview), selection);
   g_object_unref (selection);
   g_object_unref (model);