if (NILP (Vgtk_initial_argv_list))
{
signal_simple_error ("gtk-initial-argv-list must be set before creating Gtk devices", Vgtk_initial_argv_list);
if (NILP (Vgtk_initial_argv_list))
{
signal_simple_error ("gtk-initial-argv-list must be set before creating Gtk devices", Vgtk_initial_argv_list);