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<!DOCTYPE concept

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

<concept id="GUID-52151070-626D-5F14-B53F-7B46BCBD633E" xml:lang="en"><title>Using

TAutoClose</title><shortdesc>Example code showing how <codeph>TAutoClose</codeph> can be used

to clean up when an object goes out of scope.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

<p>A simple example shows how this class can be used.</p>

<codeblock id="GUID-468EE01A-8EC1-5D8E-845A-710D5BE3BBBC" xml:space="preserve">TInt ReadFile(const TDesC&amp; aFile)

//

// Read a file

//

    {

    TAutoClose<RFile> file;

    TInt r=file.iObj.Open(aFile,KFileStreamText|EFileExclusive);

    if (r!=KErrNone)

        return(r);

    TBuf<100> b;

    if ((r=file.iObj.Read(b))!=KErrNone)

        return(r);

    ...

    }</codeblock>

<p>The object <codeph>file</codeph> goes out of scope when the function completes,

and the compiler automatically destroys it, calling the <xref href="GUID-3377FA4B-FDC8-3B25-8C5F-34675F6BEA12.dita"><apiname>TAutoClose</apiname></xref> destructor

in the process. The destructor calls <codeph>Close()</codeph> on the <codeph>RFile</codeph> member

of <codeph>TAutoClose</codeph>.</p>

</conbody></concept>