[gtk] gtk-demo: Use a default action in the infobars demo

[Matthias Clasen <matthiasc src gnome org>]

commit 794ee0b8c0ab02eff6f54701ee955be734ef2a9d
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Jan 9 19:01:59 2020 -0500

    gtk-demo: Use a default action in the infobars demo
    
    This makes the question infobar activatable by clicking
    anywhere in it.

 demos/gtk-demo/infobar.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/demos/gtk-demo/infobar.c b/demos/gtk-demo/infobar.c
index a78f2d9f61..e70e162334 100644
--- a/demos/gtk-demo/infobar.c
+++ b/demos/gtk-demo/infobar.c
@@ -97,6 +97,7 @@ do_infobar (GtkWidget *do_widget)
       gtk_label_set_wrap (GTK_LABEL (label), TRUE);
       gtk_label_set_xalign (GTK_LABEL (label), 0);
       gtk_container_add (GTK_CONTAINER (gtk_info_bar_get_content_area (GTK_INFO_BAR (bar))), label);
+      gtk_info_bar_set_default_response (GTK_INFO_BAR (bar), GTK_RESPONSE_OK);
 
       button = gtk_toggle_button_new_with_label ("Question");
       g_object_bind_property (bar, "revealed", button, "active", G_BINDING_BIDIRECTIONAL | 
G_BINDING_SYNC_CREATE);