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examples/Base/Timers/BasicTimer/BasicTimer.cpp

// Copyright (c) 2000-2009 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:
// Show how RTimer, the basic timer class, works
//

#include "CommonFramework.h"


void showTimeL(TTime aTime)
        {
                // Format time, using system default locale settings
                // and then print the time using system default time
                // separator character (':') in 24 hour clock format.

        TBuf<40> timeString; // Holds the formatted date and time
        _LIT(KFormat1,"%:0%H%:1%T%:2%S%:3");
        aTime.FormatL(timeString,KFormat1);
        _LIT(KFormat2,"(24 hr clock) = %S\n");
        console->Printf(KFormat2, &timeString);
        }


void WaitForKey()
        {
        _LIT(KTxtPressAnyKey,"Press any key to continue\n\n");
        console->Printf(KTxtPressAnyKey);
        console->Getch();
        }


LOCAL_C void doExampleL()
    {
        RTimer timer;                            // The asynchronous timer and ...
        TRequestStatus timerStatus;  // ... its associated request status
        timer.CreateLocal();         // Always created for this thread.

                // do some After() requests
        _LIT(KTxt1,"Doing 10 after requests\n");
        console->Printf(KTxt1);
        for (TInt i=0; i<10; i++)
                {
                        // issue and wait for single request
                timer.After(timerStatus,1000000);  // wait 1 second
                User::WaitForRequest(timerStatus); // wait for request to complete
                        // display the tick count
                _LIT(KFormat3,"Request count %d\n");
                console->Printf(KFormat3, i);
                }

    WaitForKey(); // wait until a key is pressed

                // do an At() request
        TTime time; // time in microseconds since 0AD nominal Gregorian
        _LIT(KTxt2,"The time now is, ");
        console->Printf(KTxt2);
                
                // set and print current time
        time.HomeTime(); 
        showTimeL(time); 
                
                // add 10 seconds to the time
        TTimeIntervalSeconds timeIntervalSeconds(10);
        time += timeIntervalSeconds;
        _LIT(KTxt3,"Doing a request ten seconds from now at, ");
        console->Printf(KTxt3);
        showTimeL(time); // print the time the request should complete
                
                // issue and wait for single request.
                // set timer to go off in 10 seconds
        timer.At(timerStatus,time); 
        
           // wait for request to complete
        User::WaitForRequest(timerStatus); 
                
                // say it's over, and set and print the time again
        _LIT(KTxt4,"Your 10 seconds are up\nThe time now is, ");
        console->Printf(KTxt4);
        
           // set time to now
        time.HomeTime(); 
        
           // print the time
        showTimeL(time); 
                
                // close timer
        timer.Close();
        }

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Copyright ©2010 Nokia Corporation and/or its subsidiary(-ies).
All rights reserved. Unless otherwise stated, these materials are provided under the terms of the Eclipse Public License v1.0.