TB10.1 Example Applications: examples/Base/ArraysAndLists/linkedlist/dbllist/src/dbllist.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 // Contains the E32Main() function, which executes the example.
-00015 // The example demonstrates the use of the TDblQue class, which represents
-00016 // a doubly linked list.
-00017 // The user enters a string, which is stored as linked list of characters
-00018 // of the string. The user can edit this string by adding characters to the
-00019 // string.
-00020 // The example displays the reverse of this string on the console.
-00021 //
-00022 
-00023 
-00024 
-00029 #include "mystringreverse.h"
-00030 
-00031 LOCAL_D CConsoleBase* console;
-00032 
-00033 LOCAL_C void DoStartL();
-00034 LOCAL_C void CallExampleL();
-00035 
-00036 LOCAL_C void DoStartL()
-00037         {
-00038         // Create and install the active scheduler.
-00039         CActiveScheduler* scheduler = new (ELeave) CActiveScheduler();
-00040         CleanupStack::PushL(scheduler);
-00041         CActiveScheduler::Install(scheduler);
-00042 
-00043         _LIT(KTextDbllist,"Double Linked List Demo\nEnter the characters of the string\n");
-00044         console->Printf(KTextDbllist);
-00045         // Create an object of the CMyStringReverse class.
-00046         CMyStringReverse* stringreverse = CMyStringReverse::NewL(console);
-00047         CleanupStack::PushL(stringreverse);
-00048 
-00049         // Read the string from the user.
-00050         // Generate an asynchronous read request.
-00051         stringreverse->ReadOption();
-00052 
-00053         // Start the active scheduler.
-00054         CActiveScheduler::Start();
-00055 
-00056         // Destroy the objects in the cleanup stack.
-00057         CleanupStack::PopAndDestroy(2, scheduler); // stringreverse, scheduler.
-00058         }
-00059 
-00060 GLDEF_C TInt E32Main() // main function called by E32
-00061     {
-00062         __UHEAP_MARK;
-00063         CTrapCleanup* cleanup=CTrapCleanup::New(); // get clean-up stack
-00064         TRAPD(error, CallExampleL()); // more initialization, then do example
-00065         delete cleanup; // destroy clean-up stack
-00066         __ASSERT_ALWAYS(!error, User::Panic(KTxtEPOC32EX, error));
-00067         __UHEAP_MARKEND;
-00068         return 0; // and return
-00069     }
-00070 
-00071 LOCAL_C void CallExampleL() // initialize and call example code under cleanup stack
-00072     {
-00073         console=Console::NewL(KTxtExampleCode, TSize(KConsFullScreen, KConsFullScreen));
-00074         CleanupStack::PushL(console);
-00075         TRAPD(error, DoStartL()); // perform example function
-00076         if (error)
-00077                 console->Printf(KFormatFailed, error);
-00078         else
-00079                 console->Printf(KTxtOK);
-00080         console->Printf(KTextPressAnyKey);
-00081         console->Getch(); // get and ignore character
-00082         CleanupStack::PopAndDestroy(); // close console
-00083     }
-