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Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/helloworldbasicappui_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/S60CppExamples/helloworldbasic/src/helloworldbasicappui.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/S60CppExamples/helloworldbasic/src/helloworldbasicappui.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">* ==============================================================================</span>
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<a name="l00003"></a>00003 <span class="comment">*  Name        : helloworldbasicappui.cpp</span>
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<a name="l00004"></a>00004 <span class="comment">*  Part of     : Helloworldbasic</span>
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<a name="l00005"></a>00005 <span class="comment">*  Interface   :</span>
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<a name="l00006"></a>00006 <span class="comment">*  Description :</span>
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<a name="l00007"></a>00007 <span class="comment">*  Version     :</span>
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<a name="l00008"></a>00008 <span class="comment">*</span>
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<a name="l00009"></a>00009 <span class="comment">*  Copyright (c) 2005-2006 Nokia Corporation.</span>
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<a name="l00010"></a>00010 <span class="comment">*  This material, including documentation and any related</span>
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<a name="l00011"></a>00011 <span class="comment">*  computer programs, is protected by copyright controlled by</span>
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<a name="l00012"></a>00012 <span class="comment">*  Nokia Corporation.</span>
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<a name="l00013"></a>00013 <span class="comment">* ==============================================================================</span>
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<a name="l00014"></a>00014 <span class="comment">*/</span>
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<a name="l00015"></a>00015
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<a name="l00016"></a>00016 <span class="comment">// INCLUDE FILES</span>
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<a name="l00017"></a>00017 <span class="preprocessor">#include &lt;avkon.hrh&gt;</span>
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<a name="l00018"></a>00018 <span class="preprocessor">#include &lt;aknnotewrappers.h&gt;</span>
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<a name="l00019"></a>00019 <span class="preprocessor">#include &lt;stringloader.h&gt;</span>
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<a name="l00020"></a>00020 <span class="preprocessor">#include &lt;HelloWorldBasic.rsg&gt;</span>
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<a name="l00021"></a>00021 <span class="preprocessor">#include &lt;f32file.h&gt;</span>
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<a name="l00022"></a>00022 <span class="preprocessor">#include &lt;s32file.h&gt;</span>
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<a name="l00023"></a>00023
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<a name="l00024"></a>00024 <span class="preprocessor">#include &quot;HelloWorldBasic.pan&quot;</span>
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<a name="l00025"></a>00025 <span class="preprocessor">#include &quot;HelloWorldBasicAppUi.h&quot;</span>
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<a name="l00026"></a>00026 <span class="preprocessor">#include &quot;HelloWorldBasicAppView.h&quot;</span>
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<a name="l00027"></a>00027 <span class="preprocessor">#include &quot;HelloWorldBasic.hrh&quot;</span>
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<a name="l00028"></a>00028 <span class="preprocessor">#include &quot;HelloWorldBasicQueryDialog.h&quot;</span>
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<a name="l00029"></a>00029
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<a name="l00030"></a>00030 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>( KHelloFileName, <span class="stringliteral">&quot;Hello.txt&quot;</span> );
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<a name="l00031"></a>00031
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<a name="l00032"></a>00032 <span class="comment">// ============================ MEMBER FUNCTIONS ===============================</span>
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<a name="l00033"></a>00033
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<a name="l00034"></a>00034
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<a name="l00035"></a>00035 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00036"></a>00036 <span class="comment">// CHelloWorldBasicAppUi::ConstructL()</span>
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<a name="l00037"></a>00037 <span class="comment">// Symbian 2nd phase constructor can leave.</span>
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<a name="l00038"></a>00038 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00039"></a>00039 <span class="comment">//</span>
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<a name="l00040"></a><a class="code" href="class_c_hello_world_basic_app_ui.html#a41de3f8d3baeca2df971fe8509043934">00040</a> <span class="keywordtype">void</span> <a class="code" href="class_c_hello_world_basic_app_ui.html#a41de3f8d3baeca2df971fe8509043934">CHelloWorldBasicAppUi::ConstructL</a>()
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<a name="l00041"></a>00041     {
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<a name="l00042"></a>00042     <span class="comment">// Initialise app UI with standard value.</span>
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<a name="l00043"></a>00043     BaseConstructL(CAknAppUi::EAknEnableSkin);
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<a name="l00044"></a>00044
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<a name="l00045"></a>00045     <span class="comment">// Here the Hello.txt file is created. Because HelloWorld application is</span>
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<a name="l00046"></a>00046     <span class="comment">// localized to various languages, the Hello.txt-file is created every time</span>
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<a name="l00047"></a>00047     <span class="comment">// with current localization language</span>
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<a name="l00048"></a>00048     <span class="comment">//</span>
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<a name="l00049"></a>00049     RFs fsSession;
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<a name="l00050"></a>00050     User::LeaveIfError(fsSession.Connect());
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<a name="l00051"></a>00051     CleanupClosePushL( fsSession );
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<a name="l00052"></a>00052     TInt objectsInStack = 1;
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<a name="l00053"></a>00053
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<a name="l00054"></a>00054 <span class="preprocessor">    #if defined(__WINS__) || defined(__WINSCW__)</span>
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<a name="l00055"></a>00055 <span class="preprocessor"></span>    <span class="comment">// create private folder, when testing in emulator.</span>
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<a name="l00056"></a>00056     <span class="comment">// ignore the return value; if this fails, then file.Replace() will fail</span>
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<a name="l00057"></a>00057     <span class="comment">// and a warning note will be printed.</span>
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<a name="l00058"></a>00058     <span class="comment">//</span>
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<a name="l00059"></a>00059     fsSession.CreatePrivatePath(EDriveC);
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<a name="l00060"></a>00060 <span class="preprocessor">    #endif</span>
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<a name="l00061"></a>00061 <span class="preprocessor"></span>
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<a name="l00062"></a>00062     RFile file;
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<a name="l00063"></a>00063
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<a name="l00064"></a>00064     <span class="comment">// Create a file to write the text to</span>
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<a name="l00065"></a>00065     TInt err = file.Replace(fsSession, KHelloFileName, EFileWrite );
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<a name="l00066"></a>00066     <span class="keywordflow">if</span> (KErrNone == err)
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<a name="l00067"></a>00067         {
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<a name="l00068"></a>00068         CleanupClosePushL( file );
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<a name="l00069"></a>00069
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<a name="l00070"></a>00070         RFileWriteStream outputFileStream( file );
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<a name="l00071"></a>00071         CleanupClosePushL( outputFileStream );
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<a name="l00072"></a>00072
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<a name="l00073"></a>00073         <span class="comment">// Load a string from the resource file and stream it to file</span>
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<a name="l00074"></a>00074         HBufC* textResource = StringLoader::LoadLC( R_HEWB_FILE_TEXT );
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<a name="l00075"></a>00075         objectsInStack += 3; <span class="comment">// file, outputFileStream, testResource</span>
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<a name="l00076"></a>00076
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<a name="l00077"></a>00077         outputFileStream &lt;&lt; *textResource;
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<a name="l00078"></a>00078         }
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<a name="l00079"></a>00079     <span class="keywordflow">else</span>
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<a name="l00080"></a>00080         {
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<a name="l00081"></a>00081         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFileWriteFailed,<span class="stringliteral">&quot;Writing file %S failed: error %d&quot;</span>);
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<a name="l00082"></a>00082         CAknWarningNote* note = <span class="keyword">new</span> ( ELeave ) CAknWarningNote(ETrue);
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<a name="l00083"></a>00083
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<a name="l00084"></a>00084         TBuf&lt;64&gt; text;
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<a name="l00085"></a>00085         text.Format(KFileWriteFailed, &amp;KHelloFileName, err);
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<a name="l00086"></a>00086         note-&gt;ExecuteLD( text );
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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     CleanupStack::PopAndDestroy(objectsInStack, &amp;fsSession);
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<a name="l00090"></a>00090
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<a name="l00091"></a>00091     <span class="comment">// Create view object</span>
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<a name="l00092"></a>00092     iAppView = <a class="code" href="class_c_hello_world_basic_app_view.html#af938676f7eee65925c90b654b5a5034f">CHelloWorldBasicAppView::NewL</a>( ClientRect() );
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   103
 
<a name="l00093"></a>00093
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<a name="l00094"></a>00094     }
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<a name="l00095"></a>00095 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00096"></a>00096 <span class="comment">// CHelloWorldBasicAppUi::CHelloWorldBasicAppUi()</span>
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<a name="l00097"></a>00097 <span class="comment">// C++ default constructor can NOT contain any code, that might leave.</span>
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<a name="l00098"></a>00098 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00099"></a>00099 <span class="comment">//</span>
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<a name="l00100"></a><a class="code" href="class_c_hello_world_basic_app_ui.html#a3f0e9dfa830c56bb4dce4cf627115645">00100</a> <a class="code" href="class_c_hello_world_basic_app_ui.html#a3f0e9dfa830c56bb4dce4cf627115645">CHelloWorldBasicAppUi::CHelloWorldBasicAppUi</a>()
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<a name="l00101"></a>00101     {
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   112
 
<a name="l00102"></a>00102     <span class="comment">// No implementation required</span>
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<a name="l00103"></a>00103     }
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   114
 
<a name="l00104"></a>00104
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<a name="l00105"></a>00105 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00106"></a>00106 <span class="comment">// CHelloWorldBasicAppUi::~CHelloWorldBasicAppUi()</span>
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<a name="l00107"></a>00107 <span class="comment">// Destructor.</span>
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<a name="l00108"></a>00108 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00109"></a>00109 <span class="comment">//</span>
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<a name="l00110"></a><a class="code" href="class_c_hello_world_basic_app_ui.html#acf8d91f8b2685a50f15b34be69c24562">00110</a> <a class="code" href="class_c_hello_world_basic_app_ui.html#acf8d91f8b2685a50f15b34be69c24562">CHelloWorldBasicAppUi::~CHelloWorldBasicAppUi</a>()
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<a name="l00111"></a>00111     {
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<a name="l00112"></a>00112     <span class="keywordflow">if</span> ( iAppView )
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<a name="l00113"></a>00113         {
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<a name="l00114"></a>00114         <span class="keyword">delete</span> iAppView;
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<a name="l00115"></a>00115         iAppView = NULL;
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<a name="l00116"></a>00116         }
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<a name="l00117"></a>00117     }
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<a name="l00118"></a>00118
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   129
 
<a name="l00119"></a>00119 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00120"></a>00120 <span class="comment">// CHelloWorldBasicAppUi::HandleCommandL()</span>
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<a name="l00121"></a>00121 <span class="comment">// Takes care of command handling.</span>
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<a name="l00122"></a>00122 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00123"></a>00123 <span class="comment">//</span>
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<a name="l00124"></a>00124 <span class="keywordtype">void</span> CHelloWorldBasicAppUi::HandleCommandL( TInt aCommand )
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<a name="l00125"></a>00125     {
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<a name="l00126"></a>00126     <span class="comment">// clear possible old user-given text</span>
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<a name="l00127"></a>00127     <span class="keywordflow">if</span> (iAppView-&gt;<a class="code" href="class_c_hello_world_basic_app_view.html#a06d9ceabab68ab2e9935b1af116b654c">GetText</a>().Size() &gt; 0)
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<a name="l00128"></a>00128         {
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<a name="l00129"></a>00129         iAppView-&gt;<a class="code" href="class_c_hello_world_basic_app_view.html#a06d9ceabab68ab2e9935b1af116b654c">GetText</a>().Zero();
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<a name="l00130"></a>00130         iAppView-&gt;DrawNow();
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<a name="l00131"></a>00131         }
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<a name="l00132"></a>00132
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   143
 
<a name="l00133"></a>00133     <span class="keywordflow">switch</span>( aCommand )
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<a name="l00134"></a>00134         {
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<a name="l00135"></a>00135         <span class="keywordflow">case</span> EEikCmdExit:
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<a name="l00136"></a>00136         <span class="keywordflow">case</span> EAknSoftkeyExit:
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<a name="l00137"></a>00137             Exit();
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<a name="l00138"></a>00138             <span class="keywordflow">break</span>;
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<a name="l00139"></a>00139
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<a name="l00140"></a>00140         <span class="keywordflow">case</span> EHelloWorldBasicCommand1:
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<a name="l00141"></a>00141             {
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<a name="l00142"></a>00142             <span class="comment">// Load a string from the resource file and display it</span>
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<a name="l00143"></a>00143             HBufC* textResource = StringLoader::LoadLC( R_HEWB_COMMAND1_TEXT );
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<a name="l00144"></a>00144             CAknInformationNote* note = <span class="keyword">new</span> ( ELeave ) CAknInformationNote;
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<a name="l00145"></a>00145
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<a name="l00146"></a>00146             <span class="comment">// Show the information Note with</span>
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<a name="l00147"></a>00147             <span class="comment">// textResource loaded with StringLoader.</span>
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<a name="l00148"></a>00148             note-&gt;ExecuteLD( *textResource );
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<a name="l00149"></a>00149
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<a name="l00150"></a>00150             <span class="comment">// Pop HBuf from CleanUpStack and Destroy it.</span>
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<a name="l00151"></a>00151             CleanupStack::PopAndDestroy( textResource );
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<a name="l00152"></a>00152             }
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<a name="l00153"></a>00153             <span class="keywordflow">break</span>;
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<a name="l00154"></a>00154
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<a name="l00155"></a>00155         <span class="keywordflow">case</span> EHelloWorldBasicCommand2:
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<a name="l00156"></a>00156             {
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<a name="l00157"></a>00157             RFs fsSession;
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<a name="l00158"></a>00158             RFile rFile;
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<a name="l00159"></a>00159
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<a name="l00160"></a>00160             <span class="comment">// Connects a client process to the fileserver</span>
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<a name="l00161"></a>00161             User::LeaveIfError(fsSession.Connect());
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<a name="l00162"></a>00162             CleanupClosePushL(fsSession);
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<a name="l00163"></a>00163
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<a name="l00164"></a>00164             <span class="comment">//Open file where the stream text is</span>
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<a name="l00165"></a>00165             User::LeaveIfError(rFile.Open(fsSession,KHelloFileName, EFileStreamText));
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<a name="l00166"></a>00166             CleanupClosePushL(rFile);
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<a name="l00167"></a>00167
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<a name="l00168"></a>00168             <span class="comment">// copy stream from file to RFileStream object</span>
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<a name="l00169"></a>00169             RFileReadStream inputFileStream(rFile);
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<a name="l00170"></a>00170             CleanupClosePushL(inputFileStream);
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<a name="l00171"></a>00171
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<a name="l00172"></a>00172             <span class="comment">// HBufC descriptor is created from the RFileStream object.</span>
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<a name="l00173"></a>00173             HBufC* fileData = HBufC::NewLC(inputFileStream, 32);
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<a name="l00174"></a>00174
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<a name="l00175"></a>00175             CAknInformationNote* note = <span class="keyword">new</span> ( ELeave ) CAknInformationNote;
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<a name="l00176"></a>00176
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<a name="l00177"></a>00177             <span class="comment">// Show the information Note</span>
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<a name="l00178"></a>00178             note-&gt;ExecuteLD( *fileData );
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<a name="l00179"></a>00179
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<a name="l00180"></a>00180             <span class="comment">// Pop loaded resources from the cleanup stack:</span>
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<a name="l00181"></a>00181             <span class="comment">// filedata, inputFileStream, rFile, fsSession</span>
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<a name="l00182"></a>00182             CleanupStack::PopAndDestroy(4, &amp;fsSession);
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<a name="l00183"></a>00183             }
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<a name="l00184"></a>00184             <span class="keywordflow">break</span>;
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   195
 
<a name="l00185"></a>00185
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   196
 
<a name="l00186"></a>00186         <span class="keywordflow">case</span> EHelloWorldBasicCommand3:
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<a name="l00187"></a>00187             {
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<a name="l00188"></a>00188             <span class="comment">// Load a string from the resources and use it as a default value</span>
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<a name="l00189"></a>00189             HBufC* defaultText = StringLoader::LoadLC( R_HEWB_FILE_TEXT );
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<a name="l00190"></a>00190
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<a name="l00191"></a>00191             <a class="code" href="class_c_hello_world_query_dialog.html">CHelloWorldQueryDialog</a> *dlg = <span class="keyword">new</span> (ELeave)
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<a name="l00192"></a>00192                 <a class="code" href="class_c_hello_world_query_dialog.html">CHelloWorldQueryDialog</a>( iAppView-&gt;<a class="code" href="class_c_hello_world_basic_app_view.html#a06d9ceabab68ab2e9935b1af116b654c">GetText</a>(), defaultText );
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<a name="l00193"></a>00193
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<a name="l00194"></a>00194             dlg-&gt;ExecuteLD( R_DIALOG_TEXT_EDIT_QUERY );
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<a name="l00195"></a>00195             iAppView-&gt;DrawNow();
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<a name="l00196"></a>00196
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<a name="l00197"></a>00197             <span class="comment">// Pop HBuf from CleanUpStack and Destroy it.</span>
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<a name="l00198"></a>00198             CleanupStack::PopAndDestroy( defaultText );
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<a name="l00199"></a>00199             }
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<a name="l00200"></a>00200             <span class="keywordflow">break</span>;
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<a name="l00201"></a>00201
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<a name="l00202"></a>00202         <span class="keywordflow">default</span>:
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<a name="l00203"></a>00203             <span class="keywordflow">break</span>;
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<a name="l00204"></a>00204         }
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<a name="l00205"></a>00205     }
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<a name="l00206"></a>00206 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00207"></a>00207 <span class="comment">//  Called by framework when layout is changed.</span>
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<a name="l00208"></a>00208 <span class="comment">//  Passes the new client rectangle to the AppView</span>
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<a name="l00209"></a>00209 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00210"></a>00210 <span class="comment">//</span>
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<a name="l00211"></a>00211 <span class="keywordtype">void</span> CHelloWorldBasicAppUi::HandleResourceChangeL( TInt aType )
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<a name="l00212"></a>00212 {
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<a name="l00213"></a>00213     <span class="comment">// base-class call also</span>
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<a name="l00214"></a>00214     CAknAppUi::HandleResourceChangeL(aType);
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<a name="l00215"></a>00215     <span class="keywordflow">if</span> (aType == KEikDynamicLayoutVariantSwitch)
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<a name="l00216"></a>00216         {
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<a name="l00217"></a>00217         <span class="keywordflow">if</span> (iAppView)
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<a name="l00218"></a>00218             iAppView-&gt;SetRect( ClientRect() );
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<a name="l00219"></a>00219         }
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<a name="l00220"></a>00220 }
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<a name="l00221"></a>00221
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<a name="l00222"></a>00222 <span class="comment">// End of File</span>
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<a name="l00223"></a>00223
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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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