Symbian3/SDK/Source/GUID-09D1DB3C-DA2D-4E16-8EEB-2195F765BE22.dita
changeset 0 89d6a7a84779
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/SDK/Source/GUID-09D1DB3C-DA2D-4E16-8EEB-2195F765BE22.dita	Thu Jan 21 18:18:20 2010 +0000
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License 
+"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: 
+-->
+<!DOCTYPE concept
+  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
+<concept id="GUID-09D1DB3C-DA2D-4E16-8EEB-2195F765BE22" xml:lang="en"><title>Using
+Exported Global Variables for GLib</title><shortdesc>GLib on Linux has many global variables like <codeph>g_idle_funcs</codeph> exported
+from the <filepath>.so</filepath> file. Symbian platform does not support
+exporting global variables from the DLL. Therefore, the global variable of
+GLib cannot be exported and hence used directly.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p>The users must include the header <filepath>glib_global.h</filepath> for <codeph>libglib</codeph> global
+variables and <filepath>gobject_global.h</filepath> for <codeph>libgobject</codeph> global
+variables. The other two DLLs - <codeph>libgmodule</codeph> and <codeph>libgthread</codeph> -
+do not have any exported global variables.</p>
+<note>The header must be included only after all the other headers in the
+file.</note>
+<p>The following example code snippet explains the usage. This is a code that
+prints the version of GLib being used.</p>
+<p>The variables listed below are <codeph>libglib</codeph> global variables:</p>
+<ul>
+<li><p><codeph>glib_major_version</codeph></p></li>
+<li><p><codeph>glib_minor_version</codeph></p></li>
+<li><p><codeph>glib_micro_version</codeph></p></li>
+</ul>
+<codeblock xml:space="preserve">#include &lt;stdio.h&gt;
+#include &lt;glib.h&gt;
+#include &lt;glib_global.h&gt; // Always include as the last include 
+
+int main()
+{
+    /* glib_major_version,glib_minor_version and 
+     * glib_micro_version are libglib global variables
+     */
+    printf("The version of glib that you are using is %d.%d.%d",
+            glib_major_version,glib_minor_version,glib_micro_version);
+    getchar();
+    return 0;
+}
+</codeblock>
+</conbody></concept>
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