<?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 task
  PUBLIC "-//OASIS//DTD DITA Task//EN" "task.dtd">
<task id="GUID-1D0301C5-52D8-4E4F-BEC3-52037BA2A003" xml:lang="en"><title>Enabling
MTP over USB using a user application</title><shortdesc>This section describes the steps to enable MTP over USB using a
user application.</shortdesc><prolog><metadata><keywords/></metadata></prolog><taskbody>
<context>       <p>You can write your own application to enable MTP over USB.
The application must call the MTP Client API to start the MTP server (in the
MTP framework). The MTP Framework then loads the USB MTP Transport plug-in.</p> 
   </context>
<steps id="GUID-4DD07DEC-6017-4237-BE46-1D69E5FBD744-GENID-1-10-1-24-1-1-7-1-5-1-5-1-4-1-6-1-3-2">
<step id="GUID-E9ED382D-211C-4485-8A75-4147E453A8E1"><cmd>The user application
must instantiate a service provider, <codeph>RMTPClient</codeph>, and connect
to the MTP Server. </cmd>
</step>
<step id="GUID-4A47A2FE-51A4-4276-8B8E-DF1162E440F4"><cmd>Once the session
is connected start communication with the PC by calling <codeph>StartTransport()</codeph>.
Pass the UID for the USB transport plug-in, <codeph>0x102827B2</codeph>, to
this method.  </cmd>
</step>
</steps>
<example><codeblock xml:space="preserve">RMTPClient mtp; 
const TUid KUSBStillImage = { 0x102827B2 }; 

TInt err =  mtp.Connect();
if( err != KErrNone )
   {
   // Error in starting the MTP Framework
   }
else( err = mtp.StartTransport( KUSBStillImage ) )
   {
   if( err != KErrNone )
       {
       // Error in starting the USB transport.
       }
   }
...
err = mtp.StopTransport( KUSBstillImage ); 
if( err != KErrNone )
   {
   // Error in stopping the USB transport 
   }

mtp.Close();
</codeblock></example>
</taskbody><related-links>
<link href="GUID-9EC375CD-A021-5DD0-93A9-748AC80356EE.dita"><linktext>Enabling
MTP over USB</linktext></link>
<link href="GUID-DE2E64A5-417A-538C-904B-6D498BB55273.dita"><linktext>Symbian USB
Manager</linktext></link>
<link href="GUID-92976123-FA75-5B55-B86E-F7B404E762CF.dita"><linktext>USB Personalities</linktext>
</link>
</related-links></task>