Problem in reading Inbox

[manvinder84]

Hi to all,

I am trying to build an application to read SMS in the inbox for N72 (based on S60 2nd Edition FP3) , I´m using the CSMSHandle class provided in the wiki example http://wiki.forum.nokia.com/index.php/SMS_Operations .

But Program gets closed when I call ReadInbox method of the Class CSMSHandle.


Thanks in advance.

[kis_spn]

Can you tell me? what is the panic code you are getting?

[manvinder84]

as I am new to the S60 development... i didn't know where i can get it ... bt it doesnt show any error on console.... and ends when Inbox is read with "Program Closed: application name"...

as i tracked the error it occurs at the following line....
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TMsvSelectionOrdering sort;
sort.SetShowInvisibleEntries(ETrue);
CMsvEntry* inboxContext = CMsvEntry::NewL(*iSession, KMsvGlobalInBoxIndexEntryId, sort); //Error occurs here
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[wizard_hu_]

The panic code thing is here: http://wiki.forum.nokia.com/index.ph...ded_panic_code
However it does not work on S60 2nd FP3 as I know (it may be disabled on S60 2nd FP2 too).
A thing you can try is putting a TRAP around that method call, perhaps it just leaves somewhere, and that is something you can catch and log/display.
Since it is a variable declaration, you want to have it outside of the TRAP, something like this

CMsvEntry *inboxContect=NULL;
TRAPD(err, inboxContext = CMsvEntry::NewL(*iSession, KMsvGlobalInBoxIndexEntryId, sort))
if(err!=KErrNone) {do something, display it, or write to a logfile}

[manvinder84]

Thanks wizard for your kind reply

puting TRAP didnot worked. but i found the panic Code at the same line...it is KERN-EXEC 3

[symbianyucca]

yep, you can not TRAP panics, anyway the KERN-EXEC 3 indicates a memory violation error, most likely a usage of a NULL pointer or other ways invalid pointer usage. Thus do check the ecat line where you get it, and then see all pointers used on that line and see that they are non-NULL and valid.

[manvinder84]

in Debug mode I found the following error "can't read memory from address 0x00000020" at following line for iSession

CMsvEntry* inboxContext=CMsvEntry::NewL(iSession, KMsvGlobalInBoxIndexEntryId, sort);

[symbianyucca]

how is your iSession defined and initialized ?

[manvinder84]

iSession is defined in CSmsHandler class..... and is initialized in the constructor of the Class...

i am using wiki example http://wiki.forum.nokia.com/index.php/SMS_Operations for s60 2nd 3rd edition

[symbianyucca]

No you are not. You are using iSession and the original code appears to use *iSession, so I would actully like to see the real code you are using. So just copy paste the parts where you are initializing it, and check how you are having it declared in your class as a member variable.

[manvinder84]

Sorry... actually it is *iSession it was typing error... I m using the exact code provided in the example...

Here is initializaton code inside CSmsHandler Constructor...
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iSession = CMsvSession::OpenSyncL( *this );

iMtmRegistry = CClientMtmRegistry::NewL(*iSession);
//iMtm = iMtmRegistry->NewMtmL(KUidMsgTypeSMS);
iSmsMtm = STATIC_CAST(CSmsClientMtm*,iMtmRegistry->NewMtmL(KUidMsgTypeSMS));

// Entry selection for all received messages.
iSelection = new ( ELeave ) CMsvEntrySelection();
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code where error occurs..........
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TMsvSelectionOrdering sort;
sort.SetShowInvisibleEntries(ETrue); // we want to handle also the invisible entries

CMsvEntry* inboxContext=CMsvEntry::NewL(*iSession, KMsvGlobalInBoxIndexEntryId, sort); // Error Occurs here
CleanupStack::PushL(inboxContext);

CMsvEntrySelection* entries = inboxContext->ChildrenL();
CleanupStack::PushL( entries );

TInt msgCount= entries->Count();
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[symbianyucca]

then it looks good to me, and I can not see anything there that could be the problem. The CMsvEntry though has some variables it puts in a stack, so in theory could could have stack-overflow, so just a wild guessing you could try increasing your stack to be bigger than the default one.

[manvinder84]

i managed to increase stack size using EPOCSTACKSIZE in MMP file ... but problem still exists...



any more suggestion..

[symbianyucca]

the line only has one pointer that is used, and if you really do initialize and use it beforehad without problems, then I'm puzzled. Anyway, you could always check the capabilities you have and see that ReadUserData WriteUserData NetworkServices ones are included.