[gtk+] gtk-demo: Keep treeviews expanding

[Matthias Clasen <matthiasc src gnome org>]

commit e7b79e2097d1e6d626ff71e398fe7958d114d750
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Oct 6 14:21:19 2017 -0400

    gtk-demo: Keep treeviews expanding
    
    This is fallout from GtkBox::expand child property going away.

 demos/gtk-demo/editable_cells.c |    1 +
 demos/gtk-demo/list_store.c     |    1 +
 demos/gtk-demo/tree_store.c     |    1 +
 3 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/demos/gtk-demo/editable_cells.c b/demos/gtk-demo/editable_cells.c
index 99fe4a0..1fd6892 100644
--- a/demos/gtk-demo/editable_cells.c
+++ b/demos/gtk-demo/editable_cells.c
@@ -373,6 +373,7 @@ do_editable_cells (GtkWidget *do_widget)
 
       /* create tree view */
       treeview = gtk_tree_view_new_with_model (items_model);
+      gtk_widget_set_vexpand (treeview, TRUE);
       gtk_tree_selection_set_mode (gtk_tree_view_get_selection (GTK_TREE_VIEW (treeview)),
                                    GTK_SELECTION_SINGLE);
 
diff --git a/demos/gtk-demo/list_store.c b/demos/gtk-demo/list_store.c
index b792ef4..9422e4d 100644
--- a/demos/gtk-demo/list_store.c
+++ b/demos/gtk-demo/list_store.c
@@ -283,6 +283,7 @@ do_list_store (GtkWidget *do_widget)
 
       /* create tree view */
       treeview = gtk_tree_view_new_with_model (model);
+      gtk_widget_set_vexpand (treeview, TRUE);
       gtk_tree_view_set_search_column (GTK_TREE_VIEW (treeview),
                                        COLUMN_DESCRIPTION);
 
diff --git a/demos/gtk-demo/tree_store.c b/demos/gtk-demo/tree_store.c
index 4419f68..a3f1738 100644
--- a/demos/gtk-demo/tree_store.c
+++ b/demos/gtk-demo/tree_store.c
@@ -417,6 +417,7 @@ do_tree_store (GtkWidget *do_widget)
 
       /* create tree view */
       treeview = gtk_tree_view_new_with_model (model);
+      gtk_widget_set_vexpand (treeview, TRUE);
       g_object_unref (model);
       gtk_tree_selection_set_mode (gtk_tree_view_get_selection (GTK_TREE_VIEW (treeview)),
                                    GTK_SELECTION_MULTIPLE);