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Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_camera_wrapper_example_app_ui_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/ForumNokia/CameraExample/src/CameraWrapperExampleAppUi.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/ForumNokia/CameraExample/src/CameraWrapperExampleAppUi.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
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<a name="l00002"></a>00002 <span class="comment"> * Copyright (c) 2009 Nokia Corporation.</span>
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<a name="l00003"></a>00003 <span class="comment"> */</span>
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<a name="l00004"></a>00004
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<a name="l00005"></a>00005 <span class="comment">// INCLUDE FILES</span>
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<a name="l00006"></a>00006 <span class="preprocessor">#include &lt;avkon.hrh&gt;</span>
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<a name="l00007"></a>00007 <span class="preprocessor">#include &lt;eikon.hrh&gt;</span>
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<a name="l00008"></a>00008 <span class="preprocessor">#include &lt;aknmessagequerydialog.h&gt;</span>
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<a name="l00009"></a>00009 <span class="preprocessor">#include &lt;aknnotewrappers.h&gt;</span>
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<a name="l00010"></a>00010 <span class="preprocessor">#include &lt;eikenv.h&gt;</span>
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<a name="l00011"></a>00011
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<a name="l00012"></a>00012 <span class="preprocessor">#include &lt;CameraExample_0xEF24C10A.rsg&gt;</span>
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<a name="l00013"></a>00013 <span class="preprocessor">#include &quot;CameraWrapperExample.hrh&quot;</span>
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<a name="l00014"></a>00014 <span class="preprocessor">#include &quot;CameraWrapperExample.pan&quot;</span>
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<a name="l00015"></a>00015 <span class="preprocessor">#include &quot;CameraWrapperExampleApplication.h&quot;</span>
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<a name="l00016"></a>00016 <span class="preprocessor">#include &quot;CameraWrapperExampleAppUi.h&quot;</span>
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<a name="l00017"></a>00017 <span class="preprocessor">#include &quot;CameraWrapperExampleAppView.h&quot;</span>
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<a name="l00018"></a>00018
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<a name="l00019"></a>00019
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<a name="l00020"></a>00020 <span class="comment">// ============================ MEMBER FUNCTIONS ===============================</span>
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<a name="l00021"></a>00021
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<a name="l00022"></a>00022 <span class="keywordtype">void</span> CCameraWrapperExampleAppUi::ConstructL ()
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<a name="l00023"></a>00023     {
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<a name="l00024"></a>00024     <span class="comment">// Initialise app UI with standard value.</span>
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<a name="l00025"></a>00025     BaseConstructL (CAknAppUi::EAknEnableSkin );
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<a name="l00026"></a>00026
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<a name="l00027"></a>00027     <span class="comment">// Start receiving camera shutter key events</span>
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<a name="l00028"></a>00028 <span class="preprocessor">    #ifdef ENABLE_CAMERA_SHUTTER</span>
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<a name="l00029"></a>00029 <span class="preprocessor"></span>    CaptureCameraShutter(ETrue);
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<a name="l00030"></a>00030 <span class="preprocessor">    #endif</span>
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<a name="l00031"></a>00031 <span class="preprocessor"></span>
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<a name="l00032"></a>00032     <span class="comment">// Make this class observe changes in foreground events</span>
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<a name="l00033"></a>00033     iEikonEnv-&gt;AddForegroundObserverL(*<span class="keyword">this</span>);
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<a name="l00034"></a>00034
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<a name="l00035"></a>00035     <span class="comment">// Create view</span>
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<a name="l00036"></a>00036     iAppView = CCameraWrapperExampleAppView::NewL (ClientRect () );
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<a name="l00037"></a>00037     }
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<a name="l00038"></a>00038
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<a name="l00039"></a>00039 CCameraWrapperExampleAppUi::CCameraWrapperExampleAppUi ()
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<a name="l00040"></a>00040     {
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<a name="l00041"></a>00041     }
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<a name="l00042"></a>00042
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<a name="l00043"></a>00043 CCameraWrapperExampleAppUi::~CCameraWrapperExampleAppUi ()
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<a name="l00044"></a>00044     {
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<a name="l00045"></a>00045     <span class="keyword">delete</span> iAppView;
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<a name="l00046"></a>00046
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<a name="l00047"></a>00047 <span class="preprocessor">    #ifdef ENABLE_CAMERA_SHUTTER</span>
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<a name="l00048"></a>00048 <span class="preprocessor"></span>    CaptureCameraShutter(EFalse);
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<a name="l00049"></a>00049 <span class="preprocessor">    #endif</span>
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<a name="l00050"></a>00050 <span class="preprocessor"></span>
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<a name="l00051"></a>00051     iShutterKeyHandles.Close();
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<a name="l00052"></a>00052     }
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<a name="l00053"></a>00053
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<a name="l00054"></a>00054 <span class="preprocessor">#ifdef ENABLE_CAMERA_SHUTTER</span>
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<a name="l00055"></a>00055 <span class="preprocessor"></span>
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<a name="l00056"></a>00056 <span class="keywordtype">void</span> CCameraWrapperExampleAppUi::CaptureCameraShutter(TBool aEnable)
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<a name="l00057"></a>00057     {
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<a name="l00058"></a>00058     <span class="comment">// Try to capture events from the camera shutter key(s)</span>
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<a name="l00059"></a>00059     <span class="comment">// http://wiki.forum.nokia.com/index.php/KIS000563_-_Camera_shutter_key_(EKeyCamera_events)_cannot_be_used_in_3rd_party_applications</span>
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<a name="l00060"></a>00060     <span class="keywordflow">if</span> (aEnable &amp;&amp; !iCameraKeyCaptured)
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<a name="l00061"></a>00061         {
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<a name="l00062"></a>00062         iCameraKeyCaptured = ETrue;
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<a name="l00063"></a>00063         <span class="comment">// Enable capturing</span>
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<a name="l00064"></a>00064         RProcess proc;
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<a name="l00065"></a>00065         iShutterKeyHandles.Reset();
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<a name="l00066"></a>00066         <span class="keywordflow">if</span>(proc.HasCapability(ECapabilitySwEvent))
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<a name="l00067"></a>00067             {
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<a name="l00068"></a>00068             <span class="keywordflow">for</span>(TInt i=0; KCameraShutterKeyEventCodes[i] != 0; i++)
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<a name="l00069"></a>00069                 {
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<a name="l00070"></a>00070                 TInt32 handle = iEikonEnv-&gt;RootWin().CaptureKey( KCameraShutterKeyEventCodes[i], 0, 0 );
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<a name="l00071"></a>00071                 <span class="keywordflow">if</span>(handle &gt;= 0)
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<a name="l00072"></a>00072                     {
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<a name="l00073"></a>00073                     iShutterKeyHandles.Append(handle);
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<a name="l00074"></a>00074                     }
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<a name="l00075"></a>00075                 }
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<a name="l00076"></a>00076             }
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<a name="l00077"></a>00077         }
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<a name="l00078"></a>00078     <span class="keywordflow">else</span> <span class="keywordflow">if</span>(!aEnable &amp;&amp; iCameraKeyCaptured)
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<a name="l00079"></a>00079         {
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<a name="l00080"></a>00080         iCameraKeyCaptured = EFalse;
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<a name="l00081"></a>00081         <span class="comment">// Disable capturing</span>
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<a name="l00082"></a>00082         <span class="comment">// Release the captured camera shutter key(s)</span>
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<a name="l00083"></a>00083         <span class="keywordflow">for</span>(TInt i=0; i &lt; iShutterKeyHandles.Count(); i++)
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<a name="l00084"></a>00084             {
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<a name="l00085"></a>00085             iEikonEnv-&gt;RootWin().CancelCaptureKey( iShutterKeyHandles[i] );
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<a name="l00086"></a>00086             }
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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="preprocessor">#endif</span>
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<a name="l00090"></a>00090 <span class="preprocessor"></span>
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<a name="l00091"></a>00091
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<a name="l00092"></a>00092 <span class="keywordtype">void</span> CCameraWrapperExampleAppUi::HandleGainingForeground()
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<a name="l00093"></a>00093     {
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<a name="l00094"></a>00094     <span class="comment">// Application gets focused so reserve the camera</span>
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   105
 
<a name="l00095"></a>00095     <span class="comment">// http://wiki.forum.nokia.com/index.php/CS000821_-_Handling_Camera_resource</span>
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   106
 
<a name="l00096"></a>00096     <span class="keywordflow">if</span> ( iAppView &amp;&amp;
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   107
 
<a name="l00097"></a>00097          iAppView-&gt;CameraEngine() &amp;&amp;
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   108
 
<a name="l00098"></a>00098          iAppView-&gt;CameraEngine()-&gt;State() != CCameraEngine::EEngineNotReady )
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<a name="l00099"></a>00099         {
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   110
 
<a name="l00100"></a>00100         iAppView-&gt;CameraEngine()-&gt;ReserveAndPowerOn();
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diff changeset 
   111
 
<a name="l00101"></a>00101
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   112
 
<a name="l00102"></a>00102 <span class="preprocessor">#ifdef ENABLE_CAMERA_SHUTTER</span>
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   113
 
<a name="l00103"></a>00103 <span class="preprocessor"></span>        CaptureCameraShutter(ETrue);
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<a name="l00104"></a>00104 <span class="preprocessor">#endif</span>
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<a name="l00105"></a>00105 <span class="preprocessor"></span>        }
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<a name="l00106"></a>00106     }
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   117
 
<a name="l00107"></a>00107
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   118
 
<a name="l00108"></a>00108 <span class="keywordtype">void</span> CCameraWrapperExampleAppUi::HandleLosingForeground()
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   119
 
<a name="l00109"></a>00109     {
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   120
 
<a name="l00110"></a>00110     <span class="comment">// Application loses focus so release the camera</span>
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   121
 
<a name="l00111"></a>00111     <span class="comment">// http://wiki.forum.nokia.com/index.php/CS000821_-_Handling_Camera_resource</span>
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<a name="l00112"></a>00112     <span class="keywordflow">if</span> ( iAppView &amp;&amp;
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   123
 
<a name="l00113"></a>00113          iAppView-&gt;CameraEngine() &amp;&amp;
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   124
 
<a name="l00114"></a>00114          iAppView-&gt;CameraEngine()-&gt;State() != CCameraEngine::EEngineNotReady )
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<a name="l00115"></a>00115         {
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   126
 
<a name="l00116"></a>00116         iAppView-&gt;CameraEngine()-&gt;ReleaseAndPowerOff();
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   127
 
<a name="l00117"></a>00117
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   128
 
<a name="l00118"></a>00118 <span class="preprocessor">#ifdef ENABLE_CAMERA_SHUTTER</span>
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   129
 
<a name="l00119"></a>00119 <span class="preprocessor"></span>        CaptureCameraShutter(EFalse);
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   130
 
<a name="l00120"></a>00120 <span class="preprocessor">#endif</span>
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<a name="l00121"></a>00121 <span class="preprocessor"></span>        }
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<a name="l00122"></a>00122     }
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   133
 
<a name="l00123"></a>00123
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   134
 
<a name="l00124"></a>00124 <span class="keywordtype">void</span> CCameraWrapperExampleAppUi::UseOptionsExitCbaL()
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   135
 
<a name="l00125"></a>00125     {
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   136
 
<a name="l00126"></a>00126     CEikButtonGroupContainer* cba = Cba();
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   137
 
<a name="l00127"></a>00127     <span class="keywordflow">if</span> (cba)
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<a name="l00128"></a>00128         {
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<a name="l00129"></a>00129         cba-&gt;SetCommandSetL(R_AVKON_SOFTKEYS_OPTIONS_EXIT);
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   140
 
<a name="l00130"></a>00130         cba-&gt;DrawNow();
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   141
 
<a name="l00131"></a>00131         }
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<a name="l00132"></a>00132     }
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<a name="l00133"></a>00133
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   144
 
<a name="l00134"></a>00134 <span class="keywordtype">void</span> CCameraWrapperExampleAppUi::UseOptionsBackCbaL()
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   145
 
<a name="l00135"></a>00135     {
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   146
 
<a name="l00136"></a>00136     CEikButtonGroupContainer* cba = Cba();
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   147
 
<a name="l00137"></a>00137     <span class="keywordflow">if</span> (cba)
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   148
 
<a name="l00138"></a>00138         {
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   149
 
<a name="l00139"></a>00139         cba-&gt;SetCommandSetL(R_AVKON_SOFTKEYS_OPTIONS_BACK);
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   150
 
<a name="l00140"></a>00140         cba-&gt;DrawNow();
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   151
 
<a name="l00141"></a>00141         }
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<a name="l00142"></a>00142     }
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   153
 
<a name="l00143"></a>00143
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   154
 
<a name="l00144"></a>00144 TBool CCameraWrapperExampleAppUi::IsBackCBA()
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   155
 
<a name="l00145"></a>00145     {
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   156
 
<a name="l00146"></a>00146     CEikButtonGroupContainer* cba = Cba();
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   157
 
<a name="l00147"></a>00147     <span class="comment">// NOTE: There should be EAknSoftkeyBack in the application because</span>
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   158
 
<a name="l00148"></a>00148     <span class="comment">// we use R_AVKON_SOFTKEYS_SELECT_BACK, but it seems that there is EAknSoftkeyCancel</span>
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   159
 
<a name="l00149"></a>00149     CCoeControl* back = cba-&gt;ControlOrNull(EAknSoftkeyBack);
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   160
 
<a name="l00150"></a>00150     CCoeControl* cancel = cba-&gt;ControlOrNull(EAknSoftkeyCancel);
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   161
 
<a name="l00151"></a>00151     <span class="keywordflow">if</span> (back || cancel)
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   162
 
<a name="l00152"></a>00152         <span class="keywordflow">return</span> ETrue;
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   163
 
<a name="l00153"></a>00153     <span class="keywordflow">else</span>
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   164
 
<a name="l00154"></a>00154         <span class="keywordflow">return</span> EFalse;
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<a name="l00155"></a>00155     }
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diff changeset 
   166
 
<a name="l00156"></a>00156
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   167
 
<a name="l00157"></a>00157 TKeyResponse CCameraWrapperExampleAppUi::HandleKeyEventL(
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<a name="l00158"></a>00158     <span class="keyword">const</span> TKeyEvent&amp; aKeyEvent,TEventCode aType)
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   169
 
<a name="l00159"></a>00159     {
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   170
 
<a name="l00160"></a>00160     <span class="comment">// Capture picture with selection key</span>
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<a name="l00161"></a>00161     <span class="keywordflow">switch</span> ( aKeyEvent.iCode )
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   172
 
<a name="l00162"></a>00162         {
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<a name="l00163"></a>00163         <span class="keywordflow">case</span> EKeyOK:
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<a name="l00164"></a>00164         <span class="keywordflow">case</span> EStdKeyDevice3:
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   175
 
<a name="l00165"></a>00165         <span class="keywordflow">case</span> EKeyUpArrow:
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<a name="l00166"></a>00166         <span class="keywordflow">case</span> EKeyDownArrow:
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<a name="l00167"></a>00167             {
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<a name="l00168"></a>00168             <span class="comment">// Capture picture</span>
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   179
 
<a name="l00169"></a>00169             <span class="keywordflow">return</span> iAppView-&gt;OfferKeyEventL(aKeyEvent,aType);
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<a name="l00170"></a>00170             }
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   181
 
<a name="l00171"></a>00171         <span class="keywordflow">default</span>:
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   182
 
<a name="l00172"></a>00172             {
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   183
 
<a name="l00173"></a>00173             <span class="keywordflow">break</span>;
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   184
 
<a name="l00174"></a>00174             }
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   185
 
<a name="l00175"></a>00175         };
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diff changeset 
   186
 
<a name="l00176"></a>00176
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   187
 
<a name="l00177"></a>00177     <span class="comment">// Camera shutter events handling</span>
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   188
 
<a name="l00178"></a>00178 <span class="preprocessor">    #ifdef ENABLE_CAMERA_SHUTTER</span>
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   189
 
<a name="l00179"></a>00179 <span class="preprocessor"></span>    <span class="comment">// Camera shutter autofocus</span>
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   190
 
<a name="l00180"></a>00180     <span class="keywordflow">switch</span> ( aKeyEvent.iScanCode )
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   191
 
<a name="l00181"></a>00181         {
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   192
 
<a name="l00182"></a>00182         <span class="keywordflow">case</span> KStdKeyCameraFocus:
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   193
 
<a name="l00183"></a>00183         <span class="keywordflow">case</span> KStdKeyCameraFocus2:
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   194
 
<a name="l00184"></a>00184             {
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   195
 
<a name="l00185"></a>00185             <span class="comment">// Camera shutter autofocus</span>
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   196
 
<a name="l00186"></a>00186             <span class="keywordflow">return</span> iAppView-&gt;OfferKeyEventL(aKeyEvent,aType);
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   197
 
<a name="l00187"></a>00187             }
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   198
 
<a name="l00188"></a>00188         <span class="keywordflow">default</span>:
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diff changeset 
   199
 
<a name="l00189"></a>00189             {
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   200
 
<a name="l00190"></a>00190             <span class="keywordflow">break</span>;
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   201
 
<a name="l00191"></a>00191             }
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   202
 
<a name="l00192"></a>00192         };
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   203
 
<a name="l00193"></a>00193     <span class="comment">// Camera shutter key</span>
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   204
 
<a name="l00194"></a>00194     <span class="keywordflow">for</span>(TInt i=0; KCameraShutterKeyEventCodes[i] != 0; i++)
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   205
 
<a name="l00195"></a>00195           {
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   206
 
<a name="l00196"></a>00196           <span class="keywordflow">if</span>( KCameraShutterKeyEventCodes[i] == aKeyEvent.iCode )
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   207
 
<a name="l00197"></a>00197             {
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   208
 
<a name="l00198"></a>00198             <span class="comment">// Capture image</span>
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   209
 
<a name="l00199"></a>00199             iAppView-&gt;Capture();
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   210
 
<a name="l00200"></a>00200             <span class="keywordflow">return</span> EKeyWasConsumed;
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   211
 
<a name="l00201"></a>00201             }
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   212
 
<a name="l00202"></a>00202           }
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<a name="l00203"></a>00203 <span class="preprocessor">    #endif</span>
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<a name="l00204"></a>00204 <span class="preprocessor"></span>
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<a name="l00205"></a>00205     <span class="keywordflow">return</span> EKeyWasNotConsumed;
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<a name="l00206"></a>00206     }
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<a name="l00207"></a>00207
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<a name="l00208"></a>00208 <span class="keywordtype">void</span> CCameraWrapperExampleAppUi::HandleCommandL (TInt aCommand )
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<a name="l00209"></a>00209     {
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<a name="l00210"></a>00210     <span class="keywordflow">switch</span> (aCommand )
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<a name="l00211"></a>00211         {
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<a name="l00212"></a>00212         <span class="keywordflow">case</span> EEikCmdExit:
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<a name="l00213"></a>00213         <span class="keywordflow">case</span> EAknSoftkeyExit:
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<a name="l00214"></a>00214             {
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<a name="l00215"></a>00215             Exit();
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<a name="l00216"></a>00216             <span class="keywordflow">break</span>;
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<a name="l00217"></a>00217             }
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<a name="l00218"></a>00218         <span class="keywordflow">case</span> EAknSoftkeyBack:
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<a name="l00219"></a>00219             {
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<a name="l00220"></a>00220             iAppView-&gt;CancelCapturedPicture();
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<a name="l00221"></a>00221             UseOptionsExitCbaL();
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<a name="l00222"></a>00222             <span class="keywordflow">break</span>;
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<a name="l00223"></a>00223             }
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<a name="l00224"></a>00224         <span class="keywordflow">case</span> EAbout:
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<a name="l00225"></a>00225             {
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<a name="l00226"></a>00226             CAknMessageQueryDialog* dlg = <span class="keyword">new</span> (ELeave) CAknMessageQueryDialog ();
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<a name="l00227"></a>00227             dlg-&gt;PrepareLC (R_ABOUT_QUERY_DIALOG );
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<a name="l00228"></a>00228             HBufC* title = iEikonEnv-&gt;AllocReadResourceLC (R_ABOUT_DIALOG_TITLE );
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<a name="l00229"></a>00229             dlg-&gt;QueryHeading ()-&gt;SetTextL (*title );
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<a name="l00230"></a>00230             CleanupStack::PopAndDestroy (); <span class="comment">//title</span>
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<a name="l00231"></a>00231             HBufC* msg = iEikonEnv-&gt;AllocReadResourceLC (R_ABOUT_DIALOG_TEXT );
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<a name="l00232"></a>00232             dlg-&gt;SetMessageTextL (*msg );
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<a name="l00233"></a>00233             CleanupStack::PopAndDestroy (); <span class="comment">//msg</span>
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<a name="l00234"></a>00234             dlg-&gt;RunLD();
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<a name="l00235"></a>00235             <span class="keywordflow">break</span>;
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<a name="l00236"></a>00236             }
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<a name="l00237"></a>00237         <span class="keywordflow">default</span>:
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<a name="l00238"></a>00238             {
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<a name="l00239"></a>00239             <span class="keywordflow">break</span>;
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<a name="l00240"></a>00240             }
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<a name="l00241"></a>00241         };
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<a name="l00242"></a>00242     }
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<a name="l00243"></a>00243
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<a name="l00244"></a>00244 <span class="keywordtype">void</span> CCameraWrapperExampleAppUi::HandleResourceChangeL(TInt aType)
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<a name="l00245"></a>00245     {
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<a name="l00246"></a>00246     CAknAppUi::HandleResourceChangeL( aType );
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<a name="l00247"></a>00247
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<a name="l00248"></a>00248     <span class="keywordflow">if</span> ( aType==KEikDynamicLayoutVariantSwitch )
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<a name="l00249"></a>00249         {
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<a name="l00250"></a>00250         <span class="keywordflow">if</span> (iAppView)
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<a name="l00251"></a>00251             {
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<a name="l00252"></a>00252             TRect rect;
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<a name="l00253"></a>00253             AknLayoutUtils::LayoutMetricsRect(AknLayoutUtils::EMainPane,rect);
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<a name="l00254"></a>00254             iAppView-&gt;SetRect(rect);
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<a name="l00255"></a>00255             }
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<a name="l00256"></a>00256         }
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<a name="l00257"></a>00257
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<a name="l00258"></a>00258     }
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<a name="l00259"></a>00259
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<a name="l00260"></a>00260 <span class="comment">// End of File</span>
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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>
MCL/sftools/depl/docscontent