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     2 <!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->

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     4 "Eclipse Public License v1.0" which accompanies this distribution, 

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     6 <!-- Initial Contributors:

     7     Nokia Corporation - initial contribution.

     8 Contributors: 

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    10 <!DOCTYPE concept

    11   PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">

    12 <concept id="GUID-1FE5D4D5-B2BF-4090-9F69-D538B2220DA3" xml:lang="en"><title>Handle

    13 Global Variable Example</title><shortdesc>This example demonstrates: </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

    14 <p>How to handle global variables within the library code </p>

    15 <p>How to use WSD (Writable Static Data) in dll</p>

    16 <section id="GUID-026FD8D6-6C4A-5958-B289-775D4AE1E756-GENID-1-10-1-12-1-1-5-1-3-1-11-1-11-1-3-3"><title>Download</title> <p>Click

    17 on the following link to download the example: <xref href="guid-6013a680-57f9-415b-8851-c4fa63356636/zips/guid-723e559a-ab8e-435f-a34c-78b7a32f1fb9.zip" scope="external"> handleglobalvar.zip</xref></p><p>Click: <xref href="guid-6013a680-57f9-415b-8851-c4fa63356636/guid-723e559a-ab8e-435f-a34c-78b7a32f1fb9.html" scope="peer">browse</xref> to view the example code. </p> </section>

    18 <section id="GUID-7E7C4564-B10E-41F9-8A9D-D8A6C5E9C51C-GENID-1-10-1-12-1-1-5-1-3-1-11-1-11-1-3-4"><title>Design and

    19 Implementation</title> <p>The following sections provide information about

    20 the implementation of the example.</p> <p><b>Capabilities</b> </p>The

    21 program capabilities are defined in <filepath>globalvarex.mmp</filepath>:<codeph> CAPABILITY

    22 NONE</codeph>. Libwsddll library capabilities are defined in<filepath>libwsddll.mmp</filepath> file: <codeph>CAPABILITY

    23 ALL -TCB</codeph>. <p><b> Application Launching</b> </p>The application can

    24 be launched by executing globalvarex from eshell. <p><b>libwsd library </b></p>This

    25 library is used to get/set dll global Data. It demonstrates how to handle

    26 WSD (Writable Static Data).<p><b>How to handle WSD in dll</b></p>Collect all

    27 global variables within the structure TWsdData and creat the instance whenever

    28 it's required. For target release, use global variables and add EPOCALLOWDLLDATA

    29 in the library mmp file. wsddll.h and wsddll.cpp implement the concept of

    30 how to handle WSD data in Dll. </section>

    31 <section id="GUID-67A72761-1D92-46D1-B1C9-7455978BDE4E-GENID-1-10-1-12-1-1-5-1-3-1-11-1-11-1-3-5"><title>Building and

    32 Using</title> To build the handleglobalvar example application, go to the

    33 handleglobalvar\group directory and build the application.  The definition

    34 for the whole application can be found in the bld.inf file in the group subdirectory

    35 of the applications main directory. </section>

    36 </conbody></concept>