gtk_combo_box_text_append_text(GTK_COMBO_BOX_TEXT(combo), _("Side by Side"));
gtk_combo_box_text_append_text(GTK_COMBO_BOX_TEXT(combo), _("Side by Side Half size"));
gtk_combo_box_text_append_text(GTK_COMBO_BOX_TEXT(combo), _("Side by Side"));
gtk_combo_box_text_append_text(GTK_COMBO_BOX_TEXT(combo), _("Side by Side Half size"));