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<td >Qt 5.12</td><td ><a href="qtwidgets-index.html">Qt Widgets</a></td><td ><a href="examples-itemviews.html">Item Views Examples</a></td><td >Dir View Example</td></tr></table><table class="buildversion"><tr>
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<h1 class="title">Dir View Example</h1>
<span class="subtitle"></span>
<!-- $$$itemviews/dirview-brief -->
<p>This example demonstrates the usage of a tree view.</p>
<!-- @@@itemviews/dirview -->
<!-- $$$itemviews/dirview-description -->
<div class="descr"> <a name="details"></a>
<p>The Dir View example shows a tree view of the local file system. It uses the <a href="qfilesystemmodel.html">QFileSystemModel</a> class to provide file and directory information.</p>
<div class="border"><p class="centerAlign"><img src="images/dirview-example.png" alt="" /></p></div><pre class="cpp">
<span class="type"><a href="../qtcore/qcommandlineparser.html">QCommandLineParser</a></span> parser;
parser<span class="operator">.</span>setApplicationDescription(<span class="string">"Qt Dir View Example"</span>);
parser<span class="operator">.</span>addHelpOption();
parser<span class="operator">.</span>addVersionOption();
<span class="type"><a href="../qtcore/qcommandlineoption.html">QCommandLineOption</a></span> dontUseCustomDirectoryIconsOption(<span class="string">"c"</span><span class="operator">,</span> <span class="string">"Set QFileIconProvider::DontUseCustomDirectoryIcons"</span>);
parser<span class="operator">.</span>addOption(dontUseCustomDirectoryIconsOption);
parser<span class="operator">.</span>addPositionalArgument(<span class="string">"directory"</span><span class="operator">,</span> <span class="string">"The directory to start in."</span>);
parser<span class="operator">.</span>process(app);
<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> rootPath <span class="operator">=</span> parser<span class="operator">.</span>positionalArguments()<span class="operator">.</span>isEmpty()
</pre>
<p>The example supports a number of command line options. These options include:</p>
<ul>
<li>Application description</li>
<li>-help option</li>
<li>-version option</li>
<li>if the optionc {-c} is specified, the application will not use custom directory options</li>
</ul>
<pre class="cpp">
<span class="type"><a href="qfilesystemmodel.html">QFileSystemModel</a></span> model;
model<span class="operator">.</span>setRootPath(<span class="string">""</span>);
<span class="keyword">if</span> (parser<span class="operator">.</span>isSet(dontUseCustomDirectoryIconsOption))
model<span class="operator">.</span>iconProvider()<span class="operator">-</span><span class="operator">></span>setOptions(<span class="type"><a href="qfileiconprovider.html">QFileIconProvider</a></span><span class="operator">::</span>DontUseCustomDirectoryIcons);
<span class="type"><a href="qtreeview.html">QTreeView</a></span> tree;
tree<span class="operator">.</span>setModel(<span class="operator">&</span>model);
</pre>
<p>Declares <code>model</code> as data model for reading the local filesystem. <code>model.setRootPath("")</code> sets the current folder as the folder from which <code>model</code> will start reading. <a href="qtreeview.html">QTreeView</a> object <code>tree</code> visualizes the filesystem in a tree structure.</p>
<pre class="cpp">
tree<span class="operator">.</span>setAnimated(<span class="keyword">false</span>);
tree<span class="operator">.</span>setIndentation(<span class="number">20</span>);
tree<span class="operator">.</span>setSortingEnabled(<span class="keyword">true</span>);
<span class="keyword">const</span> <span class="type"><a href="../qtcore/qsize.html">QSize</a></span> availableSize <span class="operator">=</span> <span class="type"><a href="qapplication.html">QApplication</a></span><span class="operator">::</span>desktop()<span class="operator">-</span><span class="operator">></span>availableGeometry(<span class="operator">&</span>tree)<span class="operator">.</span>size();
tree<span class="operator">.</span>resize(availableSize <span class="operator">/</span> <span class="number">2</span>);
tree<span class="operator">.</span>setColumnWidth(<span class="number">0</span><span class="operator">,</span> tree<span class="operator">.</span>width() <span class="operator">/</span> <span class="number">3</span>);
tree<span class="operator">.</span>setWindowTitle(<span class="type"><a href="../qtcore/qobject.html">QObject</a></span><span class="operator">::</span>tr(<span class="string">"Dir View"</span>));
</pre>
<p>Sets layout options for animation, indentation, sorting, and sizing of the filesystem tree.</p>
<p>Files:</p>
<ul>
<li><a href="qtwidgets-itemviews-dirview-dirview-pro.html">itemviews/dirview/dirview.pro</a></li>
<li><a href="qtwidgets-itemviews-dirview-main-cpp.html">itemviews/dirview/main.cpp</a></li>
</ul>
</div>
<!-- @@@itemviews/dirview -->
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<acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd.
Documentation contributions included herein are the copyrights of
their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property
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