diff --git a/common/main/newmenu.h b/common/main/newmenu.h
index 2bbeed735..1acac762d 100644
--- a/common/main/newmenu.h
+++ b/common/main/newmenu.h
@@ -502,7 +502,6 @@ int newmenu_get_citem(newmenu *menu);
 
 typedef cstring_tie<5> nm_messagebox_tie;
 
-int nm_messagebox_str(menu_title title, const nm_messagebox_tie &tie, menu_subtitle str);
 int vnm_messagebox_aN(menu_title title, const nm_messagebox_tie &tie, const char *format, ...) __attribute_format_printf(3, 4);
 
 void nm_draw_background(grs_canvas &, int x1, int y1, int x2, int y2);
@@ -530,6 +529,16 @@ void nm_draw_background(grs_canvas &, int x1, int y1, int x2, int y2);
 
 namespace dcx {
 
+int nm_messagebox_str(menu_title title, const nm_messagebox_tie &tie, menu_subtitle str);
+
+struct messagebox_newmenu :
+	std::array<newmenu_item, nm_messagebox_tie::maximum_arity>,
+	newmenu
+{
+	messagebox_newmenu(const menu_title title, const menu_subtitle subtitle, const nm_messagebox_tie &tie, grs_canvas &canvas);
+	static adjusted_citem create_adjusted_citem(std::array<newmenu_item, nm_messagebox_tie::maximum_arity> &items, const nm_messagebox_tie &tie);
+};
+
 struct listbox : listbox_layout, window
 {
 	listbox(int citem, unsigned nitems, const char **item, menu_title title, grs_canvas &canvas, uint8_t allow_abort_flag);
diff --git a/similar/main/newmenu.cpp b/similar/main/newmenu.cpp
index 036fc0ea7..9e6e3c8c2 100644
--- a/similar/main/newmenu.cpp
+++ b/similar/main/newmenu.cpp
@@ -1657,13 +1657,25 @@ int (vnm_messagebox_aN)(const menu_title title, const nm_messagebox_tie &tie, co
 	return nm_messagebox_str(title, tie, menu_subtitle{nm_text});
 }
 
+namespace dcx {
+
 int nm_messagebox_str(const menu_title title, const nm_messagebox_tie &tie, const menu_subtitle subtitle)
 {
-	std::array<newmenu_item, nm_messagebox_tie::maximum_arity> items;
+	auto wind = window_create<messagebox_newmenu>(title, subtitle, tie, grd_curscreen->sc_canvas);
+	return newmenu::process_until_closed(wind);
+}
+
+messagebox_newmenu::messagebox_newmenu(const menu_title title, const menu_subtitle subtitle, const nm_messagebox_tie &tie, grs_canvas &canvas) :
+	newmenu(title, subtitle, menu_filename{nullptr}, tiny_mode_flag::normal, tab_processing_flag::ignore, create_adjusted_citem(*this, tie), canvas)
+{
+}
+
+messagebox_newmenu::adjusted_citem messagebox_newmenu::create_adjusted_citem(std::array<newmenu_item, nm_messagebox_tie::maximum_arity> &items, const nm_messagebox_tie &tie)
+{
 	auto &&item_range = partial_range(items, tie.count());
 	for (auto &&[i, s] : zip(item_range, tie))
 		nm_set_item_menu(i, s);
-	return newmenu_do2(title, subtitle, item_range, unused_newmenu_subfunction, unused_newmenu_userdata);
+	return adjusted_citem::create(item_range, 0);
 }
 
 // Example listbox callback function...
@@ -1689,8 +1701,6 @@ int nm_messagebox_str(const menu_title title, const nm_messagebox_tie &tie, cons
 
 #define LB_ITEMS_ON_SCREEN 8
 
-namespace dcx {
-
 listbox::listbox(int citem, unsigned nitems, const char **item, menu_title title, grs_canvas &canvas, uint8_t allow_abort_flag) :
 	listbox_layout(citem, nitems, item, title), window(canvas, box_x - BORDERX, box_y - title_height - BORDERY, box_w + 2 * BORDERX, height + 2 * BORDERY),
 	allow_abort_flag(allow_abort_flag)