examples/Base/MessageQueueExample/src/CMsgQActive.cpp

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// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
// All rights reserved.
// This component and the accompanying materials are made available
// under the terms of "Eclipse Public License v1.0"
// which accompanies this distribution, and is available
// at the URL "http://www.eclipse.org/legal/epl-v10.html".
//
// Initial Contributors:
// Nokia Corporation - initial contribution.
//
// Contributors:
//
// Description:
// The following class opens the InverterOutQ message Queue and displays 
// recieved data in console.
//



#include "CMsgQActive.h"
#include "e32cons.h"

_LIT(KCommonFormat2,"%S");
_LIT(KTitle , "OutputMessage");

CMsgQActive::CMsgQActive(TInt aPriority):CActive(aPriority)
        {
        CActiveScheduler::Add( this );
        }


CMsgQActive* CMsgQActive::NewL(TInt aPriority)
        {
        CMsgQActive* self=new(ELeave)CMsgQActive(aPriority);
        CleanupStack::PushL(self);
        self->ConstructL();
        CleanupStack::Pop(self);
        return self;
        }

void CMsgQActive::ConstructL()
        {
        iConsole = Console::NewL(KTitle, TSize(KConsFullScreen, KConsFullScreen));
        _LIT(KWelcomeScreen,".......Words recieved from the inverter......\n");
        iConsole->Printf(KWelcomeScreen);
        
        //Open the InverterOutQ Message Queue.
        _LIT(KGlobalInverterOutQ, "InverterOutQ");
        User::LeaveIfError(iInverterOutQ.OpenGlobal(KGlobalInverterOutQ));              
        }

void CMsgQActive::StartRecieving()
        {
        iInverterOutQ.NotifyDataAvailable(iStatus);
        SetActive();
        }

CMsgQActive::~CMsgQActive()
        {
        }

void CMsgQActive::DoCancel()
        {
        //Cancel any data which is present in the message Queue.
        iInverterOutQ.CancelDataAvailable();
        delete iConsole;
        }

void CMsgQActive::RunL()
        {
        // Recieve all available messages from the message queue.
        iInverterOutQ.ReceiveBlocking(imsgQData);       
        
        //Print the recieved message in the output message console.
        iConsole->Printf(KCommonFormat2,&imsgQData);
        
        _LIT(KNextLine , "\n");
        iConsole->Printf(KNextLine);
        
        // Make asynchronous request to be notified when data is available
        iInverterOutQ.NotifyDataAvailable(iStatus);
        SetActive();
        }

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