Function wxd_Menu_Prepend 

pub unsafe extern "C" fn wxd_Menu_Prepend(
    menu: *mut wxd_Menu_t,
    id: wxd_Id,
    item: *const c_char,
    helpString: *const c_char,
    kind: c_int,
) -> *mut wxd_MenuItem_t

@brief Prepend an item to the menu.