if (mainwin->summaryview->folder_item && !mainwin->summaryview->folder_item->threaded)
cm_toggle_menu_set_active_full(mainwin->ui_manager, "Menu/View/HideReadThreads", FALSE);
if (mainwin->summaryview->folder_item && !mainwin->summaryview->folder_item->threaded)
cm_toggle_menu_set_active_full(mainwin->ui_manager, "Menu/View/HideReadThreads", FALSE);