How to receive MMS

[mhmd_ward]

Hi all,
it is my first program in symbian and I am working in a project which requires monitoring the incoming MMS & checks if it is an audio MMs or not but when i begin to define the class I have errors and I do not know how to treat them ;plz help me
here the class :
#ifndef CRECIEVE_H_
#define CRECIEVE_H_

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

class Crecieve : public CActive, public MMsvSessionObserver
{
public:
CMsvSession* iSession;
CMsvEntry *iMsvEntry;
TMsvId iNewMessageId;
virtual ~Crecieve();
void HandleSessionEventL(TMsvSessionEvent, TAny*, TAny*, TAny*);
void ProcessMMS();
static Crecieve* NewL();
static Crecieve* NewLC();
protected:
void ConstructL();
Crecieve();
virtual void DoCancel();
};
Crecieve::Crecieve()
: CActive(EPriorityStandard) { CActiveScheduler::Add(this); }
Crecieve* Crecieve::NewLC()
{
Crecieve* me = new (ELeave) Crecieve(); // First phase construction
CleanupStack::PushL(me);
me->ConstructL(); // Second phase construction
return (me);
};
Crecieve* Crecieve::NewL()
{
Crecieve* me = Crecieve::NewLC();
CleanupStack::Pop(me);
return (me);
};
void Crecieve::ConstructL()
{
// Create CMsvSession asynchronously
iSession = CMsvSession::OpenAsyncL(*this);
}
void Crecieve::HandleSessionEventL(TMsvSessionEvent aEvent, TAny* aArg1, TAny* aArg2, TAny* aArg3)
{
switch (aEvent)
{
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)
Crecieve::ProcessMMS();
iSession->RemoveEntry(iNewMessageId);
}

}
break;


default:
// do nothing
break;
}
};
void Crecieve::ProcessMMS()
(

)
void Crecieve:oCancel()
{
iSession.Close()
}
}
#endif /*CRECIEVE_H_*/

[wizard_hu_]

What kind of errors do you get?
Note that the language is C++, thus it is preferable having the declaration in a .h file, and the definition in a separate .cpp file (having the method definitions in the header-file can lead to ambiguity-errors if you #include your header in multiple locations).

[mhmd_ward]

hi wizard_hu_
u mean that i must write the definition of the functions of the header file in an cpp file?
u mean in the CPP file contains the project ( e32main() )?
am i write?
also the Errors that i have are:
Severity and Description Path Resource Location Creation Time Id
illegal use of abstract class ('CActive:oCancel()') project/inc Crecieve.h line 31 1204990428421 608
could u till me what's wrong?
thx in advance