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<!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-1-7-1-23-1-1-7-1-5-1-5-1-4-1-6-1-3-2">

<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>