How to make the main menu item POPUP (WinAPI) active?

Question

C++ / C#

I am writing a C program using WinAPI to create an interface.
There is a resource file in which a not tricky menu is written

IDR_MENU1 MENU
BEGIN
    POPUP "История"
    BEGIN
        MENUITEM "Открыть",                     IDM_OPEN
        POPUP "Сохранить", GRAYED
        BEGIN
            MENUITEM "Список контактов",            ID_40002, GRAYED
            MENUITEM "Переписку как...",            ID_40002, GRAYED
        END
        MENUITEM "Закрыть",                     IDM_CLOSE, GRAYED
        MENUITEM SEPARATOR
        MENUITEM "Выход",                       IDM_EXIT
    END
END

As you can see POPUP's "Save" option is GRAYED.
Question: how to make this item active using WinAPI?

Answer 1

You need

EnableMenuItem(hHistoryMenu, 1, MF_BYPOSITION | MF_ENABLED);

where hHistoryMenushould point to a submenu that opens from the "History" item (to get, apparently, you need to use GetSubMenu(hMenu, 0)).