TB10.1 Example Applications: examples/Base/IPC/pubsub/publishpe.cpp Source File

00001 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
-00002 // All rights reserved.
-00003 // This component and the accompanying materials are made available
-00004 // under the terms of "Eclipse Public License v1.0"
-00005 // which accompanies this distribution, and is available
-00006 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
-00007 //
-00008 // Initial Contributors:
-00009 // Nokia Corporation - initial contribution.
-00010 //
-00011 // Contributors:
-00012 //
-00013 // Description:
-00014 // Demonstrates the pure event distribution pattern of publishing an integer property
-00015 //
-00016 
-00017 
-00018 
-00023 #include "publishpe.h"
-00024 
-00025 LOCAL_D CConsoleBase* console;
-00026 
-00027 void DoExampleL()
-00028         {
-00029         console->Printf(KTxtPEPublish);
-00030         RProperty myProperty;
-00031 
-00032         // Define the property and create a handle to it
-00033         User::LeaveIfError(RProperty::Define(KMyPropertyCat, KMyPropertyName,RProperty::EInt,KAllowAllPolicy,KAllowAllPolicy));
-00034         User::LeaveIfError(myProperty.Attach(KMyPropertyCat,KMyPropertyName,EOwnerThread));
-00035 
-00036         // The value of the property
-00037         TInt value;
-00038 
-00039         // Publish the property after every 3 seconds
-00040         for(TInt ix = 0; ix <= KMax ; ix += 20)
-00041                 {
-00042                 User::After(KTimeInterval);
-00043                 // Publish random values
-00044                 // In the pure event pattern of publishing, the value of the property is insignificant
-00045                 // Multiple publishing is only to let the subscriber know that an event has occurred
-00046                 value = Math::Random();
-00047                 console->Printf(KTxtInt,value);
-00048                 User::LeaveIfError(myProperty.Set(value));
-00049                 }
-00050 
-00051         // Free the handle to the property
-00052         myProperty.Close();
-00053 
-00054         // The publisher has finished so delete the property
-00055         User::LeaveIfError(RProperty::Delete(KMyPropertyCat,KMyPropertyName));
-00056         }
-00057 
-00058 GLDEF_C TInt E32Main()
-00059         {
-00060         __UHEAP_MARK;
-00061         CTrapCleanup* cleanup = CTrapCleanup::New();
-00062 
-00063         TRAPD(createError, console = Console::NewL(KTextConsoleTitle, TSize(KConsFullScreen,KConsFullScreen)));
-00064         if (createError)
-00065                 return createError;
-00066 
-00067         TRAPD(mainError, DoExampleL());
-00068         if (mainError)
-00069                 console->Printf(KTextFailed, mainError);
-00070         console->Printf(KTextPressAnyKey);
-00071         console->Getch();
-00072 
-00073         delete console;
-00074         delete cleanup;
-00075         __UHEAP_MARKEND;
-00076         return KErrNone;
-00077         }
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