New Arduino library: MenuSystem

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53

Hi.
Help how to work with the library.
I'm compiling a standard example and throwing an error.

#include <MenuSystem.h>

MenuSystem ms;
Menu mm("");
MenuItem mi_time("TIME");
MenuItem mi_date("DATE");
MenuItem mi_alarm("ALARM");
Menu mu_disp("DISP");
MenuItem mi_disp_brightness("BRTNS");

void setup() {
// put your setup code here, to run once:
// Menus
mm.add_item(&mi_time, &on_menu_set_time);
mm.add_item(&mi_date, &on_menu_set_date);
mm.add_item(&mi_alarm, &on_menu_set_alarm);
mm.add_menu(&mu_disp);
mu_disp.add_item(&mi_disp_brightness, &on_menu_set_brightness);
ms.set_root_menu(&mm);
}

void loop() {
// put your main code here, to run repeatedly:

}

Test_Mainmenu:3: error: no matching function for call to 'MenuSystem::MenuSystem()'

MenuSystem ms;

^

D:\Arduino\Scatch\Test_Mainmenu\Test_Mainmenu.ino:3:12: note: candidates are:

In file included from D:\Arduino\Scatch\Test_Mainmenu\Test_Mainmenu.ino:1:0:

D:\Arduino\Scatch\libraries\arduino-menusystem-master/MenuSystem.h:339:5: note: MenuSystem::MenuSystem(const MenuComponentRenderer&)

MenuSystem(MenuComponentRenderer const& renderer);

^

D:\Arduino\Scatch\libraries\arduino-menusystem-master/MenuSystem.h:339:5: note: candidate expects 1 argument, 0 provided

D:\Arduino\Scatch\libraries\arduino-menusystem-master/MenuSystem.h:336:7: note: constexpr MenuSystem::MenuSystem(const MenuSystem&)

class MenuSystem

^

D:\Arduino\Scatch\libraries\arduino-menusystem-master/MenuSystem.h:336:7: note: candidate expects 1 argument, 0 provided

D:\Arduino\Scatch\libraries\arduino-menusystem-master/MenuSystem.h:336:7: note: constexpr MenuSystem::MenuSystem(MenuSystem&&)

D:\Arduino\Scatch\libraries\arduino-menusystem-master/MenuSystem.h:336:7: note: candidate expects 1 argument, 0 provided

Test_Mainmenu:5: error: no matching function for call to 'MenuItem::MenuItem(const char [5])'

MenuItem mi_time("TIME");

^
Test_Mainmenu:18: error: 'on_menu_set_brightness' was not declared in this scope

mu_disp.add_item(&mi_disp_brightness, &on_menu_set_brightness);

^

Test_Mainmenu:19: error: 'class MenuSystem' has no member named 'set_root_menu'

ms.set_root_menu(&mm);
exit status 1
no matching function for call to 'MenuSystem::MenuSystem()'

What am I doing wrong?