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<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 <glib.h>

#include <glib_global.h> // 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>