Аноним wrote:

> struct    Event
> {
>     /*event id*/
>     unsigned int m_nID;
> 
>     /*event priority*/
>     EEventPriority    m_ePrior;
> 
>     /*type of events*/
>     EEventTypes    m_evTypes;
> 
>     /*busy flag*/
>     bool        m_bBusy;
> 
>     /*startup event time*/
>     time_t        m_startup_time;
> 
>     /*expired event time*/
>     time_t        m_expired_time;
> };
> 
> //------------------------------------------------------------------------------
> struct    nID{};
> struct    ePrior{};
> 
> typedef    boost::multi_index::multi_index_container<
>     Event,
>     boost::multi_index::indexed_by
>     <
>         boost::multi_index::ordered_unique
>         <
>             boost::multi_index::tag<nID>, BOOST_MULTI_INDEX_MEMBER(Event, unsigned int, m_nID)
>         >,
>         boost::multi_index::ordered_non_unique
>         <
>             boost::multi_index::tag<ePrior>, BOOST_MULTI_INDEX_MEMBER(Event, EEventPriority, m_ePrior)
>         >
>     >
>> eventsPool;
> 
> typedef eventsPool::index<nID>::type    nID_sub_arr;
> typedef eventsPool::index<ePrior>::type ePrior_sub_arr;
> 
> ePrior_sub_arr::iterator itr = m_eventsPool.get<ePrior>().begin();
> (*itr).m_bBusy = true; //error C3892: 'itr' : you cannot assign to a variable that is const

Если изменяешь член, который не используется как index или его часть, то достаточно:

const_cast<Event&>(*itr).m_bBusy = true;

В противном случае, см. док-цию multi_index<>::modify().

--
Maxim Yegorushkin

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