set_layout

static gboolean
set_layouts_from_gsettings (void)
{
    gchar **kbd_layout = NULL;
    GSettings *kbd_set = NULL;
    guint len = 0;
    gboolean is_ok;

    kbd_set = g_settings_new ("org.gnome.libgnomekbd.keyboard");
    kbd_layout = g_settings_get_strv (kbd_set, "layouts");
    len = g_strv_length (kbd_layout);
    g_debug ("cur kbd layout: %s\tlen: %u\n", kbd_layout[0], len);

    if ( len < 1 ) {
        g_debug ("default layout: %s\n", DEFAULT_LAYOUT);
        gchar *tmp = g_strdup_printf ("%s;", DEFAULT_LAYOUT);
        kbd_layout = g_strsplit (tmp, ";", -1);
        g_free (tmp);
    }

    is_ok = g_settings_set_strv (kbd_set, "layouts", 
            (const gchar* const*)kbd_layout);
    if ( !is_ok ) {
        g_debug ("set layouts failed: %s", kbd_layout[0]);
        return TRUE;
    }

    g_strfreev (kbd_layout);
    g_settings_sync ();
    g_object_unref (kbd_set);

    return FALSE;
}