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Asked: 2026-05-22T17:14:36+00:00

myData = [NSData dataWithBytes:(void*)pEvent length:sizeof(stRs232Timer*)]; [m_cAppIdMap setObject:myData forKey:[NSNumber numberWithUnsignedShort:wTimerId]]; if (pEvent->uExpirationTime < m_cPendingEventList->uExpirationTime) {

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myData = [NSData dataWithBytes:(void*)pEvent length:sizeof(stRs232Timer*)];
[m_cAppIdMap setObject:myData forKey:[NSNumber numberWithUnsignedShort:wTimerId]];
if (pEvent->uExpirationTime < m_cPendingEventList->uExpirationTime) {

        }
[m_cPendingEventList addObject:myData];

pEvent is a structure here.I’m trying to compare the expiration time with the expiration time field of the structure stored in the NSMutableArray m_cPendingEventList.
How to do that.The above if condition fails and is showing error.

Error:’struct NSMutableArray’ has no member named ‘uExpirationTime’

pEvent is a pointer to the structure containing uExpirationTime,uPeriod,etc as fields.

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1 Answer

  1. Editorial Team

    You should cast your pEvent to stRs232Timer, provided that everything else is correct with your code (I am guessing this from this: length:sizeof(stRs232Timer*))

    myData = [NSData dataWithBytes:(void*)pEvent length:sizeof(stRs232Timer*)];
[m_cAppIdMap setObject:myData forKey:[NSNumber numberWithUnsignedShort:wTimerId]];
if ((stRs232Timer*)pEvent->uExpirationTime < m_cPendingEventList->uExpirationTime) {

    in last line I added the cast…

    if this does not work, can you provide the declaration of pEvent?

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