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Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/hybridapp_8cpp_source.html
author Dominic Pinkman <dominic.pinkman@nokia.com>
Fri, 13 Aug 2010 16:47:46 +0100
changeset 14 578be2adaf3e
parent 6 43e37759235e
permissions -rw-r--r--
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
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<title>TB9.2 Example Applications: examples/PIPS/hybridapp/src/hybridapp.cpp Source File</title>
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<link href="tabs.css" rel="stylesheet" type="text/css"/>
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<link href="doxygen.css" rel="stylesheet" type="text/css"/>
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</head>
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<body>
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<!-- Generated by Doxygen 1.6.2 -->
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<h1>examples/PIPS/hybridapp/src/hybridapp.cpp</h1><a href="hybridapp_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).</span>
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<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
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<a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span>
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<a name="l00004"></a>00004 <span class="comment">// under the terms of &quot;Eclipse Public License v1.0&quot;</span>
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<a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span>
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<a name="l00006"></a>00006 <span class="comment">// at the URL &quot;http://www.eclipse.org/legal/epl-v10.html&quot;.</span>
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<a name="l00007"></a>00007 <span class="comment">//</span>
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<a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span>
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<a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span>
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<a name="l00010"></a>00010 <span class="comment">//</span>
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<a name="l00011"></a>00011 <span class="comment">// Contributors:</span>
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<a name="l00012"></a>00012 <span class="comment">//</span>
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<a name="l00013"></a>00013 <span class="comment">// Description:</span>
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<a name="l00014"></a>00014 <span class="comment">// Demonstrates an OE hybrid application.</span>
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<a name="l00015"></a>00015 <span class="comment">//</span>
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<a name="l00016"></a>00016
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<a name="l00017"></a>00017
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<a name="l00018"></a>00018
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<a name="l00022"></a>00022 <span class="preprocessor">#include &lt;stdio.h&gt;</span>
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<a name="l00023"></a>00023 <span class="preprocessor">#include &lt;f32file.h&gt;</span>
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<a name="l00024"></a>00024 <span class="preprocessor">#include &lt;stdlib.h&gt;</span>
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<a name="l00025"></a>00025 <span class="preprocessor">#include &lt;string.h&gt;</span>
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<a name="l00026"></a>00026
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<a name="l00032"></a><a class="code" href="hybridapp_8cpp.html#a2cb8584577937cf1b54bedf5f339d32b">00032</a> <span class="keywordtype">char</span>* <a class="code" href="hybridapp_8cpp.html#a2cb8584577937cf1b54bedf5f339d32b">DescToChar</a>(<span class="keyword">const</span> TDesC&amp; aDes)
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<a name="l00033"></a>00033         {
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<a name="l00034"></a>00034         <span class="comment">// Get the length of the descriptor.</span>
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<a name="l00035"></a>00035         TInt length = aDes.Length();
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<a name="l00036"></a>00036
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<a name="l00037"></a>00037         <span class="comment">// Allocate memory to the array of characters.</span>
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<a name="l00038"></a>00038         <span class="comment">// An additional byte of memory is allocated to the array as </span>
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<a name="l00039"></a>00039         <span class="comment">// Symbian descriptors do not end with the end of string &#39;\0&#39; character.</span>
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<a name="l00040"></a>00040         <span class="keywordtype">char</span>* ptr = (<span class="keywordtype">char</span>*)malloc(<span class="keyword">sizeof</span>(<span class="keywordtype">char</span>)*(length + 1));
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<a name="l00041"></a>00041         <span class="keywordflow">if</span>(ptr == NULL)
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<a name="l00042"></a>00042                 {
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<a name="l00043"></a>00043                 <span class="comment">// Return NULL if memory was not allocated properly.</span>
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<a name="l00044"></a>00044                 <span class="keywordflow">return</span> NULL;
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<a name="l00045"></a>00045                 }
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<a name="l00046"></a>00046         <span class="comment">// The loop index.</span>
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<a name="l00047"></a>00047         TInt ix = 0;
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<a name="l00048"></a>00048         <span class="keywordflow">for</span>(; ix &lt; length; ix++)
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<a name="l00049"></a>00049                 {
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<a name="l00050"></a>00050                 <span class="comment">// Copy the contents of the descriptor into the array of characters.</span>
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<a name="l00051"></a>00051                 ptr[ix] = aDes[ix];
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<a name="l00052"></a>00052                 }
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<a name="l00053"></a>00053         <span class="comment">// Append the end of string to the &#39;C&#39; style string.</span>
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<a name="l00054"></a>00054         ptr[ix] = <span class="charliteral">&#39;\0&#39;</span>;
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<a name="l00055"></a>00055
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<a name="l00056"></a>00056         <span class="comment">// return the pointer to the array.</span>
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<a name="l00057"></a>00057         <span class="keywordflow">return</span> ptr;
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<a name="l00058"></a>00058         }
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<a name="l00059"></a>00059
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<a name="l00065"></a><a class="code" href="hybridapp_8cpp.html#acd930fa97b9d63260709595e22a0f881">00065</a> <span class="keywordtype">void</span> <a class="code" href="hybridapp_8cpp.html#acd930fa97b9d63260709595e22a0f881">PrintDriveInfoL</a>(<span class="keyword">const</span> RFs&amp; aFs, <span class="keyword">const</span> TInt aDriveNumber)
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<a name="l00066"></a>00066         {
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<a name="l00067"></a>00067         <span class="comment">// Get the drive information</span>
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<a name="l00068"></a>00068         TDriveInfo driveInfo;
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<a name="l00069"></a>00069         TInt errDrive = aFs.Drive(driveInfo,aDriveNumber);
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<a name="l00070"></a>00070         <span class="keywordflow">if</span>(errDrive != KErrNone)
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<a name="l00071"></a>00071                 <span class="keywordflow">return</span>;
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<a name="l00072"></a>00072
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<a name="l00073"></a>00073         <span class="comment">// Get the name of the drive.</span>
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<a name="l00074"></a>00074         TBuf&lt;KMaxFileName&gt; driveName;
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<a name="l00075"></a>00075         TInt errName = aFs.GetDriveName(aDriveNumber,driveName);
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<a name="l00076"></a>00076         <span class="keywordflow">if</span>(errName != KErrNone)
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<a name="l00077"></a>00077                 <span class="keywordflow">return</span>;
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<a name="l00078"></a>00078
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<a name="l00079"></a>00079         <span class="comment">// Convert the drive name from native Symbian descriptor string to a &#39;C&#39; string.</span>
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<a name="l00080"></a>00080         <span class="keywordtype">char</span>* cptr = <a class="code" href="hybridapp_8cpp.html#a2cb8584577937cf1b54bedf5f339d32b">DescToChar</a>(driveName);
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<a name="l00081"></a>00081         CleanupStack::PushL(cptr);
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<a name="l00082"></a>00082         <span class="comment">// Check if a name has been specified for the drive.</span>
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<a name="l00083"></a>00083         <span class="keywordflow">if</span>(strlen(cptr))
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<a name="l00084"></a>00084                 {
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<a name="l00085"></a>00085                 <span class="comment">// Print the name of the drive.</span>
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<a name="l00086"></a>00086                 printf(<span class="stringliteral">&quot;Drive Name :%s\n&quot;</span>,cptr);
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<a name="l00087"></a>00087                 }
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<a name="l00088"></a>00088
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<a name="l00089"></a>00089         <span class="comment">// Print the memory information for the drive.</span>
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<a name="l00090"></a>00090         <span class="comment">// The memory size is defined for a drive only if it is formattable.</span>
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<a name="l00091"></a>00091         <span class="keywordflow">if</span>((driveInfo.iMediaAtt &amp; KMediaAttFormattable))
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<a name="l00092"></a>00092                 {
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<a name="l00093"></a>00093                 TChar driveLetter;
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<a name="l00094"></a>00094                 <span class="comment">// if drive-list entry non-zero, drive is available</span>
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<a name="l00095"></a>00095                 TInt errDLetter = aFs.DriveToChar(aDriveNumber,driveLetter);
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<a name="l00096"></a>00096                 <span class="keywordflow">if</span>(errDLetter != KErrNone)
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<a name="l00097"></a>00097                         <span class="keywordflow">return</span>;
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<a name="l00098"></a>00098                 <span class="comment">// The following line prints the drive letter followed by the hex value</span>
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<a name="l00099"></a>00099                 <span class="comment">// of the integer indicating that drive&#39;s attributes</span>
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<a name="l00100"></a>00100                 printf(<span class="stringliteral">&quot;Drive Letter: %c\n&quot;</span>,TUint(driveLetter));
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<a name="l00101"></a>00101
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<a name="l00102"></a>00102                 <span class="comment">// Get the volume information for the formatted device.</span>
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<a name="l00103"></a>00103                 TVolumeInfo volumeInfo;
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<a name="l00104"></a>00104                 TInt errVol = aFs.Volume(volumeInfo,aDriveNumber);
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<a name="l00105"></a>00105                 <span class="keywordflow">if</span>(errVol != KErrNone)
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<a name="l00106"></a>00106                         <span class="keywordflow">return</span>;
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   104
 
<a name="l00107"></a>00107
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   105
 
<a name="l00108"></a>00108                 <span class="comment">// Get the total size and the free space of the drive.</span>
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<a name="l00109"></a>00109                 TInt64 driveTotalSize = volumeInfo.iSize;
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<a name="l00110"></a>00110                 TInt64 driveFreeSize =  volumeInfo.iFree;
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<a name="l00111"></a>00111                 <span class="comment">// Print the memory information for the drive.</span>
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<a name="l00112"></a>00112                 printf(<span class="stringliteral">&quot;Total size of the drive: %d\n&quot;</span>, driveTotalSize);
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<a name="l00113"></a>00113                 printf(<span class="stringliteral">&quot;Free space: %d\n&quot;</span>, driveFreeSize);
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<a name="l00114"></a>00114
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<a name="l00115"></a>00115                 printf(<span class="stringliteral">&quot; [press the enter key to continue]\n&quot;</span>);
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<a name="l00116"></a>00116                 <span class="comment">// Wait for a key press.</span>
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<a name="l00117"></a>00117                 getchar();
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<a name="l00118"></a>00118                 }
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<a name="l00119"></a>00119
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<a name="l00120"></a>00120         CleanupStack::PopAndDestroy(cptr);
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<a name="l00121"></a>00121         }
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<a name="l00122"></a>00122
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<a name="l00123"></a><a class="code" href="hybridapp_8cpp.html#a689e0bf9aa924a1d7dc108665d44736c">00123</a> LOCAL_C <span class="keywordtype">void</span> MainL()
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<a name="l00124"></a>00124         {
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<a name="l00125"></a>00125         <span class="comment">// The file server session.</span>
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<a name="l00126"></a>00126         RFs fs;
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<a name="l00127"></a>00127         <span class="comment">// Connect to the file server.</span>
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<a name="l00128"></a>00128         User::LeaveIfError(fs.Connect());
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<a name="l00129"></a>00129         CleanupClosePushL(fs);
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<a name="l00130"></a>00130         printf(<span class="stringliteral">&quot;\nValid drives as characters (and as numbers) are:\n&quot;</span>);
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<a name="l00131"></a>00131
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<a name="l00132"></a>00132         <span class="comment">// Initialise drive number to the first drive.</span>
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<a name="l00133"></a>00133         TInt driveNumber=EDriveA;
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<a name="l00134"></a>00134         TChar driveLetter;
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<a name="l00135"></a>00135
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<a name="l00136"></a>00136     <span class="keywordflow">for</span> (; driveNumber&lt;=EDriveZ; driveNumber++)
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<a name="l00137"></a>00137         {
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<a name="l00138"></a>00138         <span class="keywordflow">if</span> (fs.IsValidDrive(driveNumber))
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<a name="l00139"></a>00139             {
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<a name="l00140"></a>00140                         <span class="comment">// Indicates that the drive exists and is valid.</span>
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<a name="l00141"></a>00141             TInt errDrive = fs.DriveToChar(driveNumber,driveLetter);
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<a name="l00142"></a>00142             <span class="keywordflow">if</span>(errDrive == KErrNone)
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   140
 
<a name="l00143"></a>00143                 {
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<a name="l00144"></a>00144                                 <span class="comment">// Print the drive letter.</span>
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<a name="l00145"></a>00145                     printf(<span class="stringliteral">&quot;%c&quot;</span>,TUint(driveLetter));
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<a name="l00146"></a>00146                                 <span class="comment">// Convert the drive letter to the drive number.</span>
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<a name="l00147"></a>00147                     TInt errChar = fs.CharToDrive(driveLetter, driveNumber);
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<a name="l00148"></a>00148                     <span class="keywordflow">if</span>(errChar == KErrNone)
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   146
 
<a name="l00149"></a>00149                         {
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<a name="l00150"></a>00150                                         <span class="comment">// Print the drive number.</span>
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<a name="l00151"></a>00151                             printf(<span class="stringliteral">&quot;(%d) &quot;</span>,driveNumber);
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<a name="l00152"></a>00152                         }
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<a name="l00153"></a>00153                 }
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<a name="l00154"></a>00154             }
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<a name="l00155"></a>00155         }
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<a name="l00156"></a>00156
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<a name="l00157"></a>00157     printf(<span class="stringliteral">&quot;\n&quot;</span>);
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<a name="l00158"></a>00158
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<a name="l00159"></a>00159         <span class="comment">// Get a list of the available drives.</span>
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<a name="l00160"></a>00160     TDriveList drivelist;
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<a name="l00161"></a>00161     User::LeaveIfError(fs.DriveList(drivelist));
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<a name="l00162"></a>00162
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<a name="l00163"></a>00163         <span class="comment">// A TDriveList (the list of available drives), is an array of</span>
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<a name="l00164"></a>00164     <span class="comment">// 26 bytes. Each byte with a non zero value signifies that the</span>
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<a name="l00165"></a>00165     <span class="comment">// corresponding drive is available.</span>
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<a name="l00166"></a>00166
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<a name="l00167"></a>00167     printf(<span class="stringliteral">&quot;\nUsing DriveList(), available drives are: \n&quot;</span>);
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<a name="l00168"></a>00168     <span class="keywordflow">for</span> (driveNumber=EDriveA; driveNumber&lt;=EDriveZ;driveNumber++)
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<a name="l00169"></a>00169         {
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<a name="l00170"></a>00170         <span class="keywordflow">if</span> (drivelist[driveNumber])
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<a name="l00171"></a>00171             {
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<a name="l00172"></a>00172                         <span class="comment">// if drive-list entry non-zero, drive is available</span>
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<a name="l00173"></a>00173             TInt errDrive = fs.DriveToChar(driveNumber,driveLetter);
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<a name="l00174"></a>00174             <span class="keywordflow">if</span>(errDrive == KErrNone)
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<a name="l00175"></a>00175                 {
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<a name="l00176"></a>00176                     <span class="comment">// The following line prints the drive letter followed by the hex value</span>
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<a name="l00177"></a>00177                     <span class="comment">// of the integer indicating that drive&#39;s attributes</span>
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<a name="l00178"></a>00178                     printf(<span class="stringliteral">&quot;Drive Letter: %c\n&quot;</span>,TUint(driveLetter));
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<a name="l00179"></a>00179                                 printf(<span class="stringliteral">&quot; [press the enter key to continue]\n&quot;</span>);
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<a name="l00180"></a>00180                                 <span class="comment">// Wait for a key press.</span>
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<a name="l00181"></a>00181                                 getchar();
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<a name="l00182"></a>00182                 }
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<a name="l00183"></a>00183             }
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<a name="l00184"></a>00184         }
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<a name="l00185"></a>00185
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<a name="l00186"></a>00186         printf(<span class="stringliteral">&quot;Memory information for formattable drives:\n&quot;</span>);
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<a name="l00187"></a>00187         printf(<span class="stringliteral">&quot; [press the enter key to continue]\n&quot;</span>);
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<a name="l00188"></a>00188         <span class="comment">// Wait for a key press.</span>
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<a name="l00189"></a>00189         getchar();
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   187
 
<a name="l00190"></a>00190         <span class="keywordflow">for</span> (driveNumber=EDriveA; driveNumber&lt;=EDriveZ;driveNumber++)
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<a name="l00191"></a>00191         {
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   189
 
<a name="l00192"></a>00192         <span class="keywordflow">if</span> (drivelist[driveNumber])
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<a name="l00193"></a>00193             {
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   191
 
<a name="l00194"></a>00194                         <a class="code" href="hybridapp_8cpp.html#acd930fa97b9d63260709595e22a0f881">PrintDriveInfoL</a>(fs,driveNumber);
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<a name="l00195"></a>00195                         }
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<a name="l00196"></a>00196                 }
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<a name="l00197"></a>00197
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   195
 
<a name="l00198"></a>00198         CleanupStack::PopAndDestroy(&amp;fs);
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<a name="l00199"></a>00199         }
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<a name="l00200"></a>00200
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<a name="l00201"></a>00201
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   199
 
<a name="l00202"></a><a class="code" href="hybridapp_8cpp.html#a0f358e9c4355138f629b8c4f37310295">00202</a> GLDEF_C TInt E32Main()
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<a name="l00203"></a>00203         {
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   201
 
<a name="l00204"></a>00204         <span class="comment">// Create cleanup stack</span>
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   202
 
<a name="l00205"></a>00205         __UHEAP_MARK;
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<a name="l00206"></a>00206         CTrapCleanup* cleanup = CTrapCleanup::New();
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<a name="l00207"></a>00207
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<a name="l00208"></a>00208         <span class="comment">// Run application code inside TRAP harness, wait for key press when terminated</span>
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<a name="l00209"></a>00209         TRAPD(mainError, MainL());
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<a name="l00210"></a>00210         <span class="keywordflow">if</span> (mainError)
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<a name="l00211"></a>00211                 {
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<a name="l00212"></a>00212                 printf(<span class="stringliteral">&quot; failed, leave code = %d&quot;</span>, mainError);
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<a name="l00213"></a>00213                 }
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<a name="l00214"></a>00214
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<a name="l00215"></a>00215         printf(<span class="stringliteral">&quot; [press the enter key to exit]\n&quot;</span>);
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<a name="l00216"></a>00216         getchar();
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<a name="l00217"></a>00217
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<a name="l00218"></a>00218         <span class="keyword">delete</span> cleanup;
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<a name="l00219"></a>00219         __UHEAP_MARKEND;
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<a name="l00220"></a>00220         <span class="keywordflow">return</span> KErrNone;
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<a name="l00221"></a>00221         }
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<a name="l00222"></a>00222
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</pre></div></div>
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<hr size="1"/><address style="text-align: right;"><small>Generated by&nbsp;
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<a href="http://www.doxygen.org/index.html">
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<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address>
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</body>
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</html>
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