The Consept Of HandleSessionEvent()

[mhmd_ward]

hi all,
i have an question about the HandleSessionEventL() method
when i read the documentation and the MMsvSessionObserver documentation i still don't know who is responsible for calling this function,
in othe words in this active object that should be listining to the message inboxe and take some actions when an MMS recieve
THEN RETURN TO THE LISTNING MODE
the class header file is :



#ifndef RECIEVE_H_
#define RECIEVE_H_

#include <e32base.h>
#include <msvapi.h> // MMsvSessionObserver
#include <msvids.h>
#include <msventry.h>
#include <e32cmn.h>
#include <mmsconst.h>
#include <e32std.h>

class Recieve : public CActive, public MMsvSessionObserver
{
public:
CMsvSession* iSession;
CMsvEntry *iMsvEntry;
TMsvId iNewMessageId;
virtual ~Recieve();
void HandleSessionEventL(TMsvSessionEvent, TAny*, TAny*, TAny*);
void ProcessMMS();
static Recieve* NewL();
static Recieve* NewLC();
protected:
void ConstructL();
Recieve();
protected:
virtual void RunL(); // Inherited from CActive
virtual void DoCancel();
virtual TInt RunError(TInt aError);
};

#endif /*RECIEVE_H_*/


and teh CPP of it :


#include "Recieve.h"


Recieve::Recieve()
: CActive(EPriorityStandard) { CActiveScheduler::Add(this); };
Recieve* Recieve::NewLC()
{
Recieve* me = new (ELeave) Recieve(); // First phase construction
CleanupStack::PushL(me);
me->ConstructL(); // Second phase construction
return (me);
};
Recieve* Recieve::NewL()
{
Recieve* me = Recieve::NewLC();
CleanupStack::Pop(me);
return (me);
};
void Recieve::ConstructL()
{
// Create CMsvSession asynchronously
iSession = CMsvSession::OpenAsyncL(*this);
};
void Recieve::ProcessMMS(){};
void Recieve::HandleSessionEventL(TMsvSessionEvent aEvent, TAny* aArg1, TAny* aArg2, TAny* aArg3)
{
switch (aEvent)
{
case EMsvEntriesCreated:
break;
case EMsvEntriesChanged:

//reading the SMS here into a rich text object , after its entry has been finally created
if (*(static_cast<TMsvId*>(aArg2)) == KMsvGlobalInBoxIndexEntryId)
{
CMsvEntrySelection* entries = static_cast<CMsvEntrySelection*>(aArg1);
if (iNewMessageId == entries->At(0))
{
// Set entry context to the new message
iMsvEntry=iSession->GetEntryL(iNewMessageId);
if(iMsvEntry->Entry().iMtm == KUidMsgTypeMultimedia)
ProcessMMS();
iSession->RemoveEntry(iNewMessageId);
}

}
break;


default:
// do nothing
break;
}
};

void Recieve::RunL()
{
User::LeaveIfError(iStatus.Int());
SetActive();
};
void Recieve:: DoCancel()
{
iSession->CloseMessageServer();
};
TInt Recieve::RunError(TInt aError)
{return(1);};
Recieve::~Recieve()
{
iSession->CloseMessageServer();
Cancel();
};





So please if any One could till me the Consept of the HandleSessionEventL() should i in the main of the project declare an object of this Class and call HandleSessionEventL()
or what to do ?
forgive my long thread but i ;m trying to make clear of my question
thnx in advance
bye.

[symbianyucca]

basically when you call: iSession = CMsvSession::OpenAsyncL(*this);

you are giving reference to your class by supplying the *this to the constructor, so the underlying API will then call the function mentioned when any events that it is reporting happens.

[mhmd_ward]

hi all,
i can't express my thankful and grateful to you symbianyucca for your quick reply but i really want to know
if i want to make an program that will run on the mobile and:
1-monitor the inboxe of the messages
2-when an message arrives it will handle it
3=when finish it will return to the monitor state.
and so on i will use my class that i have sent my question is:
is my class could do this?
if so:
what to write in the E32Main() function to make this active object working to minotor the inbox for example : declare an object of it : Revieve* Reci=Recieve:: NewL();
if so should i call the HandleSessionEventL()
Reci->HandleSessionEventL();
or just declare the object only?
or iam totally wrong and it done another way?
thnx in advance.

[symbianyucca]

just have a look into any SMS exmaple and how the HandleSessionEventL is implemented, and you do not need to call HandleSessionEventL, it will be called by system. So just check the exmaples and try it out in a real device.

[mhmd_ward]

hi symbianyucca,
Sorry but i have read the SMS Exaple 2 but it has alot of details that i suggest i don't need, also it is an DLL example i'm not familear with it ,i can't find even the implementation of the E32DLL();

all i need to tell me if my class can do what i mention before , and what to write in the E32Main() to run my program write way
thnx alot
and sorry for disturbing.

[symbianyucca]

Sorry not reading your question fully. Anyway as far as I can see calling:
Revieve* Reci=Recieve:: NewL();
Should be enough, since it also constructs the CMsvSession, which should indeed cause the HandleSessionEventL() to be called when new events happen.

[mhmd_ward]

thank u very much for your quick reply and for your help symbianyucca i will try it

[mhmd_ward]

Sorrry again symbianyucca,
i have run my program after including the Recieve.h thut i have sent it and in the
TIntE32Mail():
{
Recieve* Re=Recieve:: NewL();
return(1);
}


when running it it gives me a panic message on the emulator i don't know why? the panic message is:
Acall to User:: Panic() has Ocurred,indecating aprogramming fault in the running application
program Pro.exe::Main
Error E32USER-CBase :44



could any one help me on that
thnx in advance

[wizard_hu_]

I guess it happened in

TInt E32Main()

So this is the entry point of .exe files, and there you have no Cleanup Stack (nor Active Scheduler) initialized. You can check Examples\Basics\HelloWorld for creating a minimal console executable. Note that its E32Main method is actually located in Examples\Basics\CommonFramework\CommonFramework.h

[mhmd_ward]

hi all,
you have told me wizard_hu_ that i must initialize acleanUpStack in the E32Main like the hellow world example and (Active Schedular
must i initialize an active schedular in the E32Main also i have one in the implementantation of the active object?

if not i have written this source file after including the CommonFrameWork.h in my project:



#include "Recieve.h"
#include <e32base.h>
#include <e32std.h>
#include <e32cons.h> // Console
#include "CommonFramework.h"


LOCAL_C void doExampleL()
{
Recieve* Re=Recieve::NewL();
};

but when running it the emulator appears and close immediately without completing opening
i donot know why!!, could any body tell me why?

Could any body just copy paste my program and try it in his PC to insure that there is no thing wrong in my PC?

thnx in advance
bye for now

[kiran10182]

I think you should check this Wiki article for once.

* Sending-Receiving SMS through an Exe (Server)

Kiran.

[mhmd_ward]

hi kiran10182,
thnx for quick reply
i have read the example and write my cpp file as it ofcours with including my class and initialize my active object
but there is an error when compiling this line:

RProcess().CommandLine(cmnLine);
told me that :

Severity and Description Path Resource Location Creation Time Id
undefined identifier 'CommandLine' OmSaid2/src OmSaid2.cpp line 39 1205635545218 1786



Could u till me what's wrong
i have includid the libraries that written in the example
i'm using SDK 3rd Edition fp1
thnx in advance

[kiran10182]

RProcess().CommandLine(cmnLine);
told me that :

Severity and Description Path Resource Location Creation Time Id
undefined identifier 'CommandLine' OmSaid2/src

Try simple calling:

MainL()

instead of

// Call main function with command line
TBuf<256> cmdLine;
RProcess().CommandLine(cmdLine);
MainL(cmdLine);

You need to modify the example as per your needs. Means, change the definition, declaration and calling pattern of MainL().

Kiran.

[mhmd_ward]

hi all,
yes kiran10182 i have modified the MainL() not to take cmdLine ,
but when runing the program the emulator displayes that message



Application closed:
Stand by mode
viewSrv11


what does that mean

bye the way i'm using Carbid.C++ v1.2 and S60 Sdk 3rd Edition EP1

Could any body till me waht's wrong?
thnx in advance
bye

[kiran10182]

hi all,
yes kiran10182 i have modified the MainL() not to take cmdLine ,
but when runing the program the emulator displayes that message



Application closed:
Stand by mode
viewSrv11


what does that mean

bye the way i'm using Carbid.C++ v1.2 and S60 Sdk 3rd Edition EP1

Could any body till me waht's wrong?
thnx in advance
bye

Check it on real device.

Kiran.