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<td >Qt 5.9</td><td ><a href="qtcore-index.html">Qt Core</a></td><td ><a href="qtcore-module.html">C++ Classes</a></td><td >QFileInfo</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</td>
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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#public-functions">Public Functions</a></li>
<li class="level1"><a href="#static-public-members">Static Public Members</a></li>
<li class="level1"><a href="#related-non-members">Related Non-Members</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
<li class="level2"><a href="#performance-issues">Performance Issues</a></li>
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<h1 class="title">QFileInfo Class</h1>
<!-- $$$QFileInfo-brief -->
<p>The <a href="qfileinfo.html">QFileInfo</a> class provides system-independent file information. <a href="#details">More...</a></p>
<!-- @@@QFileInfo -->
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign"> <span class="preprocessor">#include <QFileInfo></span>
</td></tr><tr><td class="memItemLeft rightAlign topAlign"> qmake:</td><td class="memItemRight bottomAlign"> QT += core</td></tr></table></div><ul>
<li><a href="qfileinfo-members.html">List of all members, including inherited members</a></li>
<li><a href="qfileinfo-obsolete.html">Obsolete members</a></li>
</ul>
<p><b>Note:</b> All functions in this class are reentrant.</p>
<a name="public-functions"></a>
<h2 id="public-functions">Public Functions</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#QFileInfo">QFileInfo</a></b>()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#QFileInfo-2">QFileInfo</a></b>(const QString &<i>file</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#QFileInfo-3">QFileInfo</a></b>(const QFile &<i>file</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#QFileInfo-4">QFileInfo</a></b>(const QDir &<i>dir</i>, const QString &<i>file</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#QFileInfo-5">QFileInfo</a></b>(const QFileInfo &<i>fileinfo</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#dtor.QFileInfo">~QFileInfo</a></b>()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QDir </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#absoluteDir">absoluteDir</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#absoluteFilePath">absoluteFilePath</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#absolutePath">absolutePath</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#baseName">baseName</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#bundleName">bundleName</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#caching">caching</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#canonicalFilePath">canonicalFilePath</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#canonicalPath">canonicalPath</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#completeBaseName">completeBaseName</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#completeSuffix">completeSuffix</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QDateTime </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#created">created</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QDir </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#dir">dir</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#exists">exists</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#fileName">fileName</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#filePath">filePath</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#group">group</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> uint </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#groupId">groupId</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#isAbsolute">isAbsolute</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#isBundle">isBundle</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#isDir">isDir</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#isExecutable">isExecutable</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#isFile">isFile</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#isHidden">isHidden</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#isNativePath">isNativePath</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#isReadable">isReadable</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#isRelative">isRelative</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#isRoot">isRoot</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#isSymLink">isSymLink</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#isWritable">isWritable</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QDateTime </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#lastModified">lastModified</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QDateTime </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#lastRead">lastRead</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#makeAbsolute">makeAbsolute</a></b>()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#owner">owner</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> uint </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#ownerId">ownerId</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#path">path</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#permission">permission</a></b>(QFile::Permissions <i>permissions</i>) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QFile::Permissions </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#permissions">permissions</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#refresh">refresh</a></b>()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#setCaching">setCaching</a></b>(bool <i>enable</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#setFile">setFile</a></b>(const QString &<i>file</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#setFile-1">setFile</a></b>(const QFile &<i>file</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#setFile-2">setFile</a></b>(const QDir &<i>dir</i>, const QString &<i>file</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> qint64 </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#size">size</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#suffix">suffix</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#swap">swap</a></b>(QFileInfo &<i>other</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#symLinkTarget">symLinkTarget</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#operator-not-eq">operator!=</a></b>(const QFileInfo &<i>fileinfo</i>) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QFileInfo &</td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#operator-eq">operator=</a></b>(const QFileInfo &<i>fileinfo</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QFileInfo &</td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#operator-eq-1">operator=</a></b>(QFileInfo &&<i>other</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#operator-eq-eq">operator==</a></b>(const QFileInfo &<i>fileinfo</i>) const</td></tr>
</table></div>
<a name="static-public-members"></a>
<h2 id="static-public-members">Static Public Members</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#exists-1">exists</a></b>(const QString &<i>file</i>)</td></tr>
</table></div>
<a name="related-non-members"></a>
<h2 id="related-non-members">Related Non-Members</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> typedef </td><td class="memItemRight bottomAlign"><b><a href="qfileinfo.html#QFileInfoList-typedef">QFileInfoList</a></b></td></tr>
</table></div>
<a name="details"></a>
<!-- $$$QFileInfo-description -->
<div class="descr">
<h2 id="details">Detailed Description</h2>
<p>The <a href="qfileinfo.html">QFileInfo</a> class provides system-independent file information.</p>
<p><a href="qfileinfo.html">QFileInfo</a> provides information about a file's name and position (path) in the file system, its access rights and whether it is a directory or symbolic link, etc. The file's size and last modified/read times are also available. <a href="qfileinfo.html">QFileInfo</a> can also be used to obtain information about a Qt <a href="resources.html">resource</a>.</p>
<p>A <a href="qfileinfo.html">QFileInfo</a> can point to a file with either a relative or an absolute file path. Absolute file paths begin with the directory separator "/" (or with a drive specification on Windows). Relative file names begin with a directory name or a file name and specify a path relative to the current working directory. An example of an absolute path is the string "/tmp/quartz". A relative path might look like "src/fatlib". You can use the function <a href="qfileinfo.html#isRelative">isRelative</a>() to check whether a <a href="qfileinfo.html">QFileInfo</a> is using a relative or an absolute file path. You can call the function <a href="qfileinfo.html#makeAbsolute">makeAbsolute</a>() to convert a relative <a href="qfileinfo.html">QFileInfo</a>'s path to an absolute path.</p>
<p>The file that the <a href="qfileinfo.html">QFileInfo</a> works on is set in the constructor or later with <a href="qfileinfo.html#setFile">setFile</a>(). Use <a href="qfileinfo.html#exists">exists</a>() to see if the file exists and <a href="qfileinfo.html#size">size</a>() to get its size.</p>
<p>The file's type is obtained with <a href="qfileinfo.html#isFile">isFile</a>(), <a href="qfileinfo.html#isDir">isDir</a>() and <a href="qfileinfo.html#isSymLink">isSymLink</a>(). The <a href="qfileinfo.html#symLinkTarget">symLinkTarget</a>() function provides the name of the file the symlink points to.</p>
<p>On Unix (including macOS and iOS), the symlink has the same <a href="qfileinfo.html#size">size</a>() has the file it points to, because Unix handles symlinks transparently; similarly, opening a symlink using <a href="qfile.html">QFile</a> effectively opens the link's target. For example:</p>
<pre class="cpp">
<span class="preprocessor">#ifdef Q_OS_UNIX</span>
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> info1(<span class="string">"/home/bob/bin/untabify"</span>);
info1<span class="operator">.</span>isSymLink(); <span class="comment">// returns true</span>
info1<span class="operator">.</span>absoluteFilePath(); <span class="comment">// returns "/home/bob/bin/untabify"</span>
info1<span class="operator">.</span>size(); <span class="comment">// returns 56201</span>
info1<span class="operator">.</span>symLinkTarget(); <span class="comment">// returns "/opt/pretty++/bin/untabify"</span>
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> info2(info1<span class="operator">.</span>symLinkTarget());
info2<span class="operator">.</span>isSymLink(); <span class="comment">// returns false</span>
info2<span class="operator">.</span>absoluteFilePath(); <span class="comment">// returns "/opt/pretty++/bin/untabify"</span>
info2<span class="operator">.</span>size(); <span class="comment">// returns 56201</span>
<span class="preprocessor">#endif</span>
</pre>
<p>On Windows, symlinks (shortcuts) are <code>.lnk</code> files. The reported <a href="qfileinfo.html#size">size</a>() is that of the symlink (not the link's target), and opening a symlink using <a href="qfile.html">QFile</a> opens the <code>.lnk</code> file. For example:</p>
<pre class="cpp">
<span class="preprocessor">#ifdef Q_OS_WIN</span>
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> info1(<span class="string">"C:\\Documents and Settings\\Bob\\untabify.lnk"</span>);
info1<span class="operator">.</span>isSymLink(); <span class="comment">// returns true</span>
info1<span class="operator">.</span>absoluteFilePath(); <span class="comment">// returns "C:/Documents and Settings/Bob/untabify.lnk"</span>
info1<span class="operator">.</span>size(); <span class="comment">// returns 743</span>
info1<span class="operator">.</span>symLinkTarget(); <span class="comment">// returns "C:/Pretty++/untabify"</span>
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> info2(info1<span class="operator">.</span>symLinkTarget());
info2<span class="operator">.</span>isSymLink(); <span class="comment">// returns false</span>
info2<span class="operator">.</span>absoluteFilePath(); <span class="comment">// returns "C:/Pretty++/untabify"</span>
info2<span class="operator">.</span>size(); <span class="comment">// returns 63942</span>
<span class="preprocessor">#endif</span>
</pre>
<p>Elements of the file's name can be extracted with <a href="qfileinfo.html#path">path</a>() and <a href="qfileinfo.html#fileName">fileName</a>(). The <a href="qfileinfo.html#fileName">fileName</a>()'s parts can be extracted with <a href="qfileinfo.html#baseName">baseName</a>(), <a href="qfileinfo.html#suffix">suffix</a>() or <a href="qfileinfo.html#completeSuffix">completeSuffix</a>(). <a href="qfileinfo.html">QFileInfo</a> objects to directories created by Qt classes will not have a trailing file separator. If you wish to use trailing separators in your own file info objects, just append one to the file name given to the constructors or <a href="qfileinfo.html#setFile">setFile</a>().</p>
<p>The file's dates are returned by <a href="qfileinfo.html#created">created</a>(), <a href="qfileinfo.html#lastModified">lastModified</a>() and <a href="qfileinfo.html#lastRead">lastRead</a>(). Information about the file's access permissions is obtained with <a href="qfileinfo.html#isReadable">isReadable</a>(), <a href="qfileinfo.html#isWritable">isWritable</a>() and <a href="qfileinfo.html#isExecutable">isExecutable</a>(). The file's ownership is available from <a href="qfileinfo.html#owner">owner</a>(), <a href="qfileinfo.html#ownerId">ownerId</a>(), <a href="qfileinfo.html#group">group</a>() and <a href="qfileinfo.html#groupId">groupId</a>(). You can examine a file's permissions and ownership in a single statement using the <a href="qfileinfo.html#permission">permission</a>() function.</p>
<a name="ntfs-permissions"></a><p><b>Note: </b>On NTFS file systems, ownership and permissions checking is disabled by default for performance reasons. To enable it, include the following line:</p><pre class="cpp">
<span class="keyword">extern</span> Q_CORE_EXPORT <span class="type">int</span> qt_ntfs_permission_lookup;
</pre>
<p>Permission checking is then turned on and off by incrementing and decrementing <code>qt_ntfs_permission_lookup</code> by 1.</p>
<pre class="cpp">
qt_ntfs_permission_lookup<span class="operator">+</span><span class="operator">+</span>; <span class="comment">// turn checking on</span>
qt_ntfs_permission_lookup<span class="operator">-</span><span class="operator">-</span>; <span class="comment">// turn it off again</span>
</pre>
<a name="performance-issues"></a>
<h3 >Performance Issues</h3>
<p>Some of <a href="qfileinfo.html">QFileInfo</a>'s functions query the file system, but for performance reasons, some functions only operate on the file name itself. For example: To return the absolute path of a relative file name, <a href="qfileinfo.html#absolutePath">absolutePath</a>() has to query the file system. The <a href="qfileinfo.html#path">path</a>() function, however, can work on the file name directly, and so it is faster.</p>
<p><b>Note: </b>To speed up performance, <a href="qfileinfo.html">QFileInfo</a> caches information about the file.</p><p>Because files can be changed by other users or programs, or even by other parts of the same program, there is a function that refreshes the file information: <a href="qfileinfo.html#refresh">refresh</a>(). If you want to switch off a <a href="qfileinfo.html">QFileInfo</a>'s caching and force it to access the file system every time you request information from it call <a href="qfileinfo.html#setCaching">setCaching</a>(false).</p>
</div>
<p><b>See also </b><a href="qdir.html">QDir</a> and <a href="qfile.html">QFile</a>.</p>
<!-- @@@QFileInfo -->
<div class="func">
<h2>Member Function Documentation</h2>
<!-- $$$QFileInfo[overload1]$$$QFileInfo -->
<h3 class="fn" id="QFileInfo"><a name="QFileInfo"></a>QFileInfo::<span class="name">QFileInfo</span>()</h3>
<p>Constructs an empty <a href="qfileinfo.html">QFileInfo</a> object.</p>
<p>Note that an empty <a href="qfileinfo.html">QFileInfo</a> object contain no file reference.</p>
<p><b>See also </b><a href="qfileinfo.html#setFile">setFile</a>().</p>
<!-- @@@QFileInfo -->
<!-- $$$QFileInfo$$$QFileInfoconstQString& -->
<h3 class="fn" id="QFileInfo-2"><a name="QFileInfo-2"></a>QFileInfo::<span class="name">QFileInfo</span>(const <span class="type"><a href="qstring.html">QString</a></span> &<i>file</i>)</h3>
<p>Constructs a new <a href="qfileinfo.html">QFileInfo</a> that gives information about the given file. The <i>file</i> can also include an absolute or relative path.</p>
<p><b>See also </b><a href="qfileinfo.html#setFile">setFile</a>(), <a href="qfileinfo.html#isRelative">isRelative</a>(), <a href="qdir.html#setCurrent">QDir::setCurrent</a>(), and <a href="qdir.html#isRelativePath">QDir::isRelativePath</a>().</p>
<!-- @@@QFileInfo -->
<!-- $$$QFileInfo$$$QFileInfoconstQFile& -->
<h3 class="fn" id="QFileInfo-3"><a name="QFileInfo-3"></a>QFileInfo::<span class="name">QFileInfo</span>(const <span class="type"><a href="qfile.html">QFile</a></span> &<i>file</i>)</h3>
<p>Constructs a new <a href="qfileinfo.html">QFileInfo</a> that gives information about file <i>file</i>.</p>
<p>If the <i>file</i> has a relative path, the <a href="qfileinfo.html">QFileInfo</a> will also have a relative path.</p>
<p><b>See also </b><a href="qfileinfo.html#isRelative">isRelative</a>().</p>
<!-- @@@QFileInfo -->
<!-- $$$QFileInfo$$$QFileInfoconstQDir&constQString& -->
<h3 class="fn" id="QFileInfo-4"><a name="QFileInfo-4"></a>QFileInfo::<span class="name">QFileInfo</span>(const <span class="type"><a href="qdir.html">QDir</a></span> &<i>dir</i>, const <span class="type"><a href="qstring.html">QString</a></span> &<i>file</i>)</h3>
<p>Constructs a new <a href="qfileinfo.html">QFileInfo</a> that gives information about the given <i>file</i> in the directory <i>dir</i>.</p>
<p>If <i>dir</i> has a relative path, the <a href="qfileinfo.html">QFileInfo</a> will also have a relative path.</p>
<p>If <i>file</i> is an absolute path, then the directory specified by <i>dir</i> will be disregarded.</p>
<p><b>See also </b><a href="qfileinfo.html#isRelative">isRelative</a>().</p>
<!-- @@@QFileInfo -->
<!-- $$$QFileInfo$$$QFileInfoconstQFileInfo& -->
<h3 class="fn" id="QFileInfo-5"><a name="QFileInfo-5"></a>QFileInfo::<span class="name">QFileInfo</span>(const <span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> &<i>fileinfo</i>)</h3>
<p>Constructs a new <a href="qfileinfo.html">QFileInfo</a> that is a copy of the given <i>fileinfo</i>.</p>
<!-- @@@QFileInfo -->
<!-- $$$~QFileInfo[overload1]$$$~QFileInfo -->
<h3 class="fn" id="dtor.QFileInfo"><a name="dtor.QFileInfo"></a>QFileInfo::<span class="name">~QFileInfo</span>()</h3>
<p>Destroys the <a href="qfileinfo.html">QFileInfo</a> and frees its resources.</p>
<!-- @@@~QFileInfo -->
<!-- $$$absoluteDir[overload1]$$$absoluteDir -->
<h3 class="fn" id="absoluteDir"><a name="absoluteDir"></a><span class="type"><a href="qdir.html">QDir</a></span> QFileInfo::<span class="name">absoluteDir</span>() const</h3>
<p>Returns the file's absolute path as a <a href="qdir.html">QDir</a> object.</p>
<p><b>See also </b><a href="qfileinfo.html#dir">dir</a>(), <a href="qfileinfo.html#filePath">filePath</a>(), <a href="qfileinfo.html#fileName">fileName</a>(), and <a href="qfileinfo.html#isRelative">isRelative</a>().</p>
<!-- @@@absoluteDir -->
<!-- $$$absoluteFilePath[overload1]$$$absoluteFilePath -->
<h3 class="fn" id="absoluteFilePath"><a name="absoluteFilePath"></a><span class="type"><a href="qstring.html">QString</a></span> QFileInfo::<span class="name">absoluteFilePath</span>() const</h3>
<p>Returns an absolute path including the file name.</p>
<p>The absolute path name consists of the full path and the file name. On Unix this will always begin with the root, '/', directory. On Windows this will always begin 'D:/' where D is a drive letter, except for network shares that are not mapped to a drive letter, in which case the path will begin '//sharename/'. <a href="qfileinfo.html">QFileInfo</a> will uppercase drive letters. Note that <a href="qdir.html">QDir</a> does not do this. The code snippet below shows this.</p>
<pre class="cpp">
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> fi(<span class="string">"c:/temp/foo"</span>); <span class="operator">=</span><span class="operator">></span> fi<span class="operator">.</span>absoluteFilePath() <span class="operator">=</span><span class="operator">></span> <span class="string">"C:/temp/foo"</span>
</pre>
<p>This function returns the same as <a href="qfileinfo.html#filePath">filePath</a>(), unless <a href="qfileinfo.html#isRelative">isRelative</a>() is true. In contrast to <a href="qfileinfo.html#canonicalFilePath">canonicalFilePath</a>(), symbolic links or redundant "." or ".." elements are not necessarily removed.</p>
<p><b>Warning:</b> If <a href="qfileinfo.html#filePath">filePath</a>() is empty the behavior of this function is undefined.</p>
<p><b>See also </b><a href="qfileinfo.html#filePath">filePath</a>(), <a href="qfileinfo.html#canonicalFilePath">canonicalFilePath</a>(), and <a href="qfileinfo.html#isRelative">isRelative</a>().</p>
<!-- @@@absoluteFilePath -->
<!-- $$$absolutePath[overload1]$$$absolutePath -->
<h3 class="fn" id="absolutePath"><a name="absolutePath"></a><span class="type"><a href="qstring.html">QString</a></span> QFileInfo::<span class="name">absolutePath</span>() const</h3>
<p>Returns a file's path absolute path. This doesn't include the file name.</p>
<p>On Unix the absolute path will always begin with the root, '/', directory. On Windows this will always begin 'D:/' where D is a drive letter, except for network shares that are not mapped to a drive letter, in which case the path will begin '//sharename/'.</p>
<p>In contrast to <a href="qfileinfo.html#canonicalPath">canonicalPath</a>() symbolic links or redundant "." or ".." elements are not necessarily removed.</p>
<p><b>Warning:</b> If <a href="qfileinfo.html#filePath">filePath</a>() is empty the behavior of this function is undefined.</p>
<p><b>See also </b><a href="qfileinfo.html#absoluteFilePath">absoluteFilePath</a>(), <a href="qfileinfo.html#path">path</a>(), <a href="qfileinfo.html#canonicalPath">canonicalPath</a>(), <a href="qfileinfo.html#fileName">fileName</a>(), and <a href="qfileinfo.html#isRelative">isRelative</a>().</p>
<!-- @@@absolutePath -->
<!-- $$$baseName[overload1]$$$baseName -->
<h3 class="fn" id="baseName"><a name="baseName"></a><span class="type"><a href="qstring.html">QString</a></span> QFileInfo::<span class="name">baseName</span>() const</h3>
<p>Returns the base name of the file without the path.</p>
<p>The base name consists of all characters in the file up to (but not including) the <i>first</i> '.' character.</p>
<p>Example:</p>
<pre class="cpp">
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> fi(<span class="string">"/tmp/archive.tar.gz"</span>);
<span class="type"><a href="qstring.html">QString</a></span> base <span class="operator">=</span> fi<span class="operator">.</span>baseName(); <span class="comment">// base = "archive"</span>
</pre>
<p>The base name of a file is computed equally on all platforms, independent of file naming conventions (e.g., ".bashrc" on Unix has an empty base name, and the suffix is "bashrc").</p>
<p><b>See also </b><a href="qfileinfo.html#fileName">fileName</a>(), <a href="qfileinfo.html#suffix">suffix</a>(), <a href="qfileinfo.html#completeSuffix">completeSuffix</a>(), and <a href="qfileinfo.html#completeBaseName">completeBaseName</a>().</p>
<!-- @@@baseName -->
<!-- $$$bundleName[overload1]$$$bundleName -->
<h3 class="fn" id="bundleName"><a name="bundleName"></a><span class="type"><a href="qstring.html">QString</a></span> QFileInfo::<span class="name">bundleName</span>() const</h3>
<p>Returns the name of the bundle.</p>
<p>On macOS and iOS this returns the proper localized name for a bundle if the path <a href="qfileinfo.html#isBundle">isBundle</a>(). On all other platforms an empty <a href="qstring.html">QString</a> is returned.</p>
<p>Example:</p>
<pre class="cpp">
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> fi(<span class="string">"/Applications/Safari.app"</span>);
<span class="type"><a href="qstring.html">QString</a></span> bundle <span class="operator">=</span> fi<span class="operator">.</span>bundleName(); <span class="comment">// name = "Safari"</span>
</pre>
<p>This function was introduced in Qt 4.3.</p>
<p><b>See also </b><a href="qfileinfo.html#isBundle">isBundle</a>(), <a href="qfileinfo.html#filePath">filePath</a>(), <a href="qfileinfo.html#baseName">baseName</a>(), and <a href="qfileinfo.html#suffix">suffix</a>().</p>
<!-- @@@bundleName -->
<!-- $$$caching[overload1]$$$caching -->
<h3 class="fn" id="caching"><a name="caching"></a><span class="type">bool</span> QFileInfo::<span class="name">caching</span>() const</h3>
<p>Returns <code>true</code> if caching is enabled; otherwise returns <code>false</code>.</p>
<p><b>See also </b><a href="qfileinfo.html#setCaching">setCaching</a>() and <a href="qfileinfo.html#refresh">refresh</a>().</p>
<!-- @@@caching -->
<!-- $$$canonicalFilePath[overload1]$$$canonicalFilePath -->
<h3 class="fn" id="canonicalFilePath"><a name="canonicalFilePath"></a><span class="type"><a href="qstring.html">QString</a></span> QFileInfo::<span class="name">canonicalFilePath</span>() const</h3>
<p>Returns the canonical path including the file name, i.e. an absolute path without symbolic links or redundant "." or ".." elements.</p>
<p>If the file does not exist, canonicalFilePath() returns an empty string.</p>
<p><b>See also </b><a href="qfileinfo.html#filePath">filePath</a>(), <a href="qfileinfo.html#absoluteFilePath">absoluteFilePath</a>(), and <a href="qfileinfo.html#dir">dir</a>().</p>
<!-- @@@canonicalFilePath -->
<!-- $$$canonicalPath[overload1]$$$canonicalPath -->
<h3 class="fn" id="canonicalPath"><a name="canonicalPath"></a><span class="type"><a href="qstring.html">QString</a></span> QFileInfo::<span class="name">canonicalPath</span>() const</h3>
<p>Returns the file's path canonical path (excluding the file name), i.e. an absolute path without symbolic links or redundant "." or ".." elements.</p>
<p>If the file does not exist, canonicalPath() returns an empty string.</p>
<p><b>See also </b><a href="qfileinfo.html#path">path</a>() and <a href="qfileinfo.html#absolutePath">absolutePath</a>().</p>
<!-- @@@canonicalPath -->
<!-- $$$completeBaseName[overload1]$$$completeBaseName -->
<h3 class="fn" id="completeBaseName"><a name="completeBaseName"></a><span class="type"><a href="qstring.html">QString</a></span> QFileInfo::<span class="name">completeBaseName</span>() const</h3>
<p>Returns the complete base name of the file without the path.</p>
<p>The complete base name consists of all characters in the file up to (but not including) the <i>last</i> '.' character.</p>
<p>Example:</p>
<pre class="cpp">
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> fi(<span class="string">"/tmp/archive.tar.gz"</span>);
<span class="type"><a href="qstring.html">QString</a></span> base <span class="operator">=</span> fi<span class="operator">.</span>completeBaseName(); <span class="comment">// base = "archive.tar"</span>
</pre>
<p><b>See also </b><a href="qfileinfo.html#fileName">fileName</a>(), <a href="qfileinfo.html#suffix">suffix</a>(), <a href="qfileinfo.html#completeSuffix">completeSuffix</a>(), and <a href="qfileinfo.html#baseName">baseName</a>().</p>
<!-- @@@completeBaseName -->
<!-- $$$completeSuffix[overload1]$$$completeSuffix -->
<h3 class="fn" id="completeSuffix"><a name="completeSuffix"></a><span class="type"><a href="qstring.html">QString</a></span> QFileInfo::<span class="name">completeSuffix</span>() const</h3>
<p>Returns the complete suffix (extension) of the file.</p>
<p>The complete suffix consists of all characters in the file after (but not including) the first '.'.</p>
<p>Example:</p>
<pre class="cpp">
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> fi(<span class="string">"/tmp/archive.tar.gz"</span>);
<span class="type"><a href="qstring.html">QString</a></span> ext <span class="operator">=</span> fi<span class="operator">.</span>completeSuffix(); <span class="comment">// ext = "tar.gz"</span>
</pre>
<p><b>See also </b><a href="qfileinfo.html#fileName">fileName</a>(), <a href="qfileinfo.html#suffix">suffix</a>(), <a href="qfileinfo.html#baseName">baseName</a>(), and <a href="qfileinfo.html#completeBaseName">completeBaseName</a>().</p>
<!-- @@@completeSuffix -->
<!-- $$$created[overload1]$$$created -->
<h3 class="fn" id="created"><a name="created"></a><span class="type"><a href="qdatetime.html">QDateTime</a></span> QFileInfo::<span class="name">created</span>() const</h3>
<p>Returns the date and local time when the file was created.</p>
<p>On most Unix systems, this function returns the time of the last status change. A status change occurs when the file is created, but it also occurs whenever the user writes or sets inode information (for example, changing the file permissions).</p>
<p>If neither creation time nor "last status change" time are not available, returns the same as <a href="qfileinfo.html#lastModified">lastModified</a>().</p>
<p><b>See also </b><a href="qfileinfo.html#lastModified">lastModified</a>() and <a href="qfileinfo.html#lastRead">lastRead</a>().</p>
<!-- @@@created -->
<!-- $$$dir[overload1]$$$dir -->
<h3 class="fn" id="dir"><a name="dir"></a><span class="type"><a href="qdir.html">QDir</a></span> QFileInfo::<span class="name">dir</span>() const</h3>
<p>Returns the path of the object's parent directory as a <a href="qdir.html">QDir</a> object.</p>
<p><b>Note:</b> The <a href="qdir.html">QDir</a> returned always corresponds to the object's parent directory, even if the <a href="qfileinfo.html">QFileInfo</a> represents a directory.</p>
<p>For each of the following, dir() returns the <a href="qdir.html">QDir</a> <code>"~/examples/191697"</code>.</p>
<pre class="cpp">
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> fileInfo1(<span class="string">"~/examples/191697/."</span>);
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> fileInfo2(<span class="string">"~/examples/191697/.."</span>);
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> fileInfo3(<span class="string">"~/examples/191697/main.cpp"</span>);
</pre>
<p>For each of the following, dir() returns the <a href="qdir.html">QDir</a> <code>"."</code>.</p>
<pre class="cpp">
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> fileInfo4(<span class="string">"."</span>);
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> fileInfo5(<span class="string">".."</span>);
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> fileInfo6(<span class="string">"main.cpp"</span>);
</pre>
<p><b>See also </b><a href="qfileinfo.html#absolutePath">absolutePath</a>(), <a href="qfileinfo.html#filePath">filePath</a>(), <a href="qfileinfo.html#fileName">fileName</a>(), <a href="qfileinfo.html#isRelative">isRelative</a>(), and <a href="qfileinfo.html#absoluteDir">absoluteDir</a>().</p>
<!-- @@@dir -->
<!-- $$$exists[overload1]$$$exists -->
<h3 class="fn" id="exists"><a name="exists"></a><span class="type">bool</span> QFileInfo::<span class="name">exists</span>() const</h3>
<p>Returns <code>true</code> if the file exists; otherwise returns <code>false</code>.</p>
<p><b>Note: </b>If the file is a symlink that points to a non-existing file, false is returned.</p><!-- @@@exists -->
<!-- $$$exists$$$existsconstQString& -->
<h3 class="fn" id="exists-1"><a name="exists-1"></a><code>[static] </code><span class="type">bool</span> QFileInfo::<span class="name">exists</span>(const <span class="type"><a href="qstring.html">QString</a></span> &<i>file</i>)</h3>
<p>Returns <code>true</code> if the <i>file</i> exists; otherwise returns <code>false</code>.</p>
<p><b>Note: </b>If <i>file</i> is a symlink that points to a non-existing file, false is returned.</p><p><b>Note: </b>Using this function is faster than using <code>QFileInfo(file).exists()</code> for file system access.</p><p>This function was introduced in Qt 5.2.</p>
<!-- @@@exists -->
<!-- $$$fileName[overload1]$$$fileName -->
<h3 class="fn" id="fileName"><a name="fileName"></a><span class="type"><a href="qstring.html">QString</a></span> QFileInfo::<span class="name">fileName</span>() const</h3>
<p>Returns the name of the file, excluding the path.</p>
<p>Example:</p>
<pre class="cpp">
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> fi(<span class="string">"/tmp/archive.tar.gz"</span>);
<span class="type"><a href="qstring.html">QString</a></span> name <span class="operator">=</span> fi<span class="operator">.</span>fileName(); <span class="comment">// name = "archive.tar.gz"</span>
</pre>
<p>Note that, if this <a href="qfileinfo.html">QFileInfo</a> object is given a path ending in a slash, the name of the file is considered empty.</p>
<p><b>See also </b><a href="qfileinfo.html#isRelative">isRelative</a>(), <a href="qfileinfo.html#filePath">filePath</a>(), <a href="qfileinfo.html#baseName">baseName</a>(), and <a href="qfileinfo.html#suffix">suffix</a>().</p>
<!-- @@@fileName -->
<!-- $$$filePath[overload1]$$$filePath -->
<h3 class="fn" id="filePath"><a name="filePath"></a><span class="type"><a href="qstring.html">QString</a></span> QFileInfo::<span class="name">filePath</span>() const</h3>
<p>Returns the file name, including the path (which may be absolute or relative).</p>
<p><b>See also </b><a href="qfileinfo.html#absoluteFilePath">absoluteFilePath</a>(), <a href="qfileinfo.html#canonicalFilePath">canonicalFilePath</a>(), and <a href="qfileinfo.html#isRelative">isRelative</a>().</p>
<!-- @@@filePath -->
<!-- $$$group[overload1]$$$group -->
<h3 class="fn" id="group"><a name="group"></a><span class="type"><a href="qstring.html">QString</a></span> QFileInfo::<span class="name">group</span>() const</h3>
<p>Returns the group of the file. On Windows, on systems where files do not have groups, or if an error occurs, an empty string is returned.</p>
<p>This function can be time consuming under Unix (in the order of milliseconds).</p>
<p><b>See also </b><a href="qfileinfo.html#groupId">groupId</a>(), <a href="qfileinfo.html#owner">owner</a>(), and <a href="qfileinfo.html#ownerId">ownerId</a>().</p>
<!-- @@@group -->
<!-- $$$groupId[overload1]$$$groupId -->
<h3 class="fn" id="groupId"><a name="groupId"></a><span class="type"><a href="qtglobal.html#uint-typedef">uint</a></span> QFileInfo::<span class="name">groupId</span>() const</h3>
<p>Returns the id of the group the file belongs to.</p>
<p>On Windows and on systems where files do not have groups this function always returns (uint) -2.</p>
<p><b>See also </b><a href="qfileinfo.html#group">group</a>(), <a href="qfileinfo.html#owner">owner</a>(), and <a href="qfileinfo.html#ownerId">ownerId</a>().</p>
<!-- @@@groupId -->
<!-- $$$isAbsolute[overload1]$$$isAbsolute -->
<h3 class="fn" id="isAbsolute"><a name="isAbsolute"></a><span class="type">bool</span> QFileInfo::<span class="name">isAbsolute</span>() const</h3>
<p>Returns <code>true</code> if the file path name is absolute, otherwise returns false if the path is relative.</p>
<p><b>See also </b><a href="qfileinfo.html#isRelative">isRelative</a>().</p>
<!-- @@@isAbsolute -->
<!-- $$$isBundle[overload1]$$$isBundle -->
<h3 class="fn" id="isBundle"><a name="isBundle"></a><span class="type">bool</span> QFileInfo::<span class="name">isBundle</span>() const</h3>
<p>Returns <code>true</code> if this object points to a bundle or to a symbolic link to a bundle on macOS and iOS; otherwise returns <code>false</code>.</p>
<p>This function was introduced in Qt 4.3.</p>
<p><b>See also </b><a href="qfileinfo.html#isDir">isDir</a>(), <a href="qfileinfo.html#isSymLink">isSymLink</a>(), and <a href="qfileinfo.html#isFile">isFile</a>().</p>
<!-- @@@isBundle -->
<!-- $$$isDir[overload1]$$$isDir -->
<h3 class="fn" id="isDir"><a name="isDir"></a><span class="type">bool</span> QFileInfo::<span class="name">isDir</span>() const</h3>
<p>Returns <code>true</code> if this object points to a directory or to a symbolic link to a directory; otherwise returns <code>false</code>.</p>
<p><b>See also </b><a href="qfileinfo.html#isFile">isFile</a>(), <a href="qfileinfo.html#isSymLink">isSymLink</a>(), and <a href="qfileinfo.html#isBundle">isBundle</a>().</p>
<!-- @@@isDir -->
<!-- $$$isExecutable[overload1]$$$isExecutable -->
<h3 class="fn" id="isExecutable"><a name="isExecutable"></a><span class="type">bool</span> QFileInfo::<span class="name">isExecutable</span>() const</h3>
<p>Returns <code>true</code> if the file is executable; otherwise returns <code>false</code>.</p>
<p><b>See also </b><a href="qfileinfo.html#isReadable">isReadable</a>(), <a href="qfileinfo.html#isWritable">isWritable</a>(), and <a href="qfileinfo.html#permission">permission</a>().</p>
<!-- @@@isExecutable -->
<!-- $$$isFile[overload1]$$$isFile -->
<h3 class="fn" id="isFile"><a name="isFile"></a><span class="type">bool</span> QFileInfo::<span class="name">isFile</span>() const</h3>
<p>Returns <code>true</code> if this object points to a file or to a symbolic link to a file. Returns <code>false</code> if the object points to something which isn't a file, such as a directory.</p>
<p><b>See also </b><a href="qfileinfo.html#isDir">isDir</a>(), <a href="qfileinfo.html#isSymLink">isSymLink</a>(), and <a href="qfileinfo.html#isBundle">isBundle</a>().</p>
<!-- @@@isFile -->
<!-- $$$isHidden[overload1]$$$isHidden -->
<h3 class="fn" id="isHidden"><a name="isHidden"></a><span class="type">bool</span> QFileInfo::<span class="name">isHidden</span>() const</h3>
<p>Returns <code>true</code> if this is a `hidden' file; otherwise returns <code>false</code>.</p>
<p><b>Note:</b> This function returns <code>true</code> for the special entries "." and ".." on Unix, even though <a href="qdir.html#entryList">QDir::entryList</a> threats them as shown.</p>
<!-- @@@isHidden -->
<!-- $$$isNativePath[overload1]$$$isNativePath -->
<h3 class="fn" id="isNativePath"><a name="isNativePath"></a><span class="type">bool</span> QFileInfo::<span class="name">isNativePath</span>() const</h3>
<p>Returns <code>true</code> if the file path can be used directly with native APIs. Returns <code>false</code> if the file is otherwise supported by a virtual file system inside Qt, such as <a href="resources.html">the Qt Resource System</a>.</p>
<p><b>Note:</b> Native paths may still require conversion of path separators and character encoding, depending on platform and input requirements of the native API.</p>
<p>This function was introduced in Qt 5.0.</p>
<p><b>See also </b><a href="qdir.html#toNativeSeparators">QDir::toNativeSeparators</a>(), <a href="qfile.html#encodeName">QFile::encodeName</a>(), <a href="qfileinfo.html#filePath">filePath</a>(), <a href="qfileinfo.html#absoluteFilePath">absoluteFilePath</a>(), and <a href="qfileinfo.html#canonicalFilePath">canonicalFilePath</a>().</p>
<!-- @@@isNativePath -->
<!-- $$$isReadable[overload1]$$$isReadable -->
<h3 class="fn" id="isReadable"><a name="isReadable"></a><span class="type">bool</span> QFileInfo::<span class="name">isReadable</span>() const</h3>
<p>Returns <code>true</code> if the user can read the file; otherwise returns <code>false</code>.</p>
<p><b>Note: </b>If the <a href="qfileinfo.html#ntfs-permissions">NTFS permissions</a> check has not been enabled, the result on Windows will merely reflect whether the file exists.</p><p><b>See also </b><a href="qfileinfo.html#isWritable">isWritable</a>(), <a href="qfileinfo.html#isExecutable">isExecutable</a>(), and <a href="qfileinfo.html#permission">permission</a>().</p>
<!-- @@@isReadable -->
<!-- $$$isRelative[overload1]$$$isRelative -->
<h3 class="fn" id="isRelative"><a name="isRelative"></a><span class="type">bool</span> QFileInfo::<span class="name">isRelative</span>() const</h3>
<p>Returns <code>true</code> if the file path name is relative, otherwise returns false if the path is absolute (e.g. under Unix a path is absolute if it begins with a "/").</p>
<p><b>See also </b><a href="qfileinfo.html#isAbsolute">isAbsolute</a>().</p>
<!-- @@@isRelative -->
<!-- $$$isRoot[overload1]$$$isRoot -->
<h3 class="fn" id="isRoot"><a name="isRoot"></a><span class="type">bool</span> QFileInfo::<span class="name">isRoot</span>() const</h3>
<p>Returns <code>true</code> if the object points to a directory or to a symbolic link to a directory, and that directory is the root directory; otherwise returns <code>false</code>.</p>
<!-- @@@isRoot -->
<!-- $$$isSymLink[overload1]$$$isSymLink -->
<h3 class="fn" id="isSymLink"><a name="isSymLink"></a><span class="type">bool</span> QFileInfo::<span class="name">isSymLink</span>() const</h3>
<p>Returns <code>true</code> if this object points to a symbolic link; otherwise returns <code>false</code>.</p>
<p>Symbolic links exist on Unix (including macOS and iOS) and Windows and are typically created by the <code>ln -s</code> or <code>mklink</code> commands, respectively. Opening a symbolic link effectively opens the <a href="qfileinfo.html#symLinkTarget">link's target</a>.</p>
<p>In addition, true will be returned for shortcuts (<code>*.lnk</code> files) on Windows. Opening those will open the <code>.lnk</code> file itself.</p>
<p>Example:</p>
<pre class="cpp">
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> info(fileName);
<span class="keyword">if</span> (info<span class="operator">.</span>isSymLink())
fileName <span class="operator">=</span> info<span class="operator">.</span>symLinkTarget();
</pre>
<p><b>Note: </b>If the symlink points to a non existing file, <a href="qfileinfo.html#exists">exists</a>() returns false.</p><p><b>See also </b><a href="qfileinfo.html#isFile">isFile</a>(), <a href="qfileinfo.html#isDir">isDir</a>(), and <a href="qfileinfo.html#symLinkTarget">symLinkTarget</a>().</p>
<!-- @@@isSymLink -->
<!-- $$$isWritable[overload1]$$$isWritable -->
<h3 class="fn" id="isWritable"><a name="isWritable"></a><span class="type">bool</span> QFileInfo::<span class="name">isWritable</span>() const</h3>
<p>Returns <code>true</code> if the user can write to the file; otherwise returns <code>false</code>.</p>
<p><b>Note: </b>If the <a href="qfileinfo.html#ntfs-permissions">NTFS permissions</a> check has not been enabled, the result on Windows will merely reflect whether the file is marked as Read Only.</p><p><b>See also </b><a href="qfileinfo.html#isReadable">isReadable</a>(), <a href="qfileinfo.html#isExecutable">isExecutable</a>(), and <a href="qfileinfo.html#permission">permission</a>().</p>
<!-- @@@isWritable -->
<!-- $$$lastModified[overload1]$$$lastModified -->
<h3 class="fn" id="lastModified"><a name="lastModified"></a><span class="type"><a href="qdatetime.html">QDateTime</a></span> QFileInfo::<span class="name">lastModified</span>() const</h3>
<p>Returns the date and local time when the file was last modified.</p>
<p><b>See also </b><a href="qfileinfo.html#created">created</a>() and <a href="qfileinfo.html#lastRead">lastRead</a>().</p>
<!-- @@@lastModified -->
<!-- $$$lastRead[overload1]$$$lastRead -->
<h3 class="fn" id="lastRead"><a name="lastRead"></a><span class="type"><a href="qdatetime.html">QDateTime</a></span> QFileInfo::<span class="name">lastRead</span>() const</h3>
<p>Returns the date and local time when the file was last read (accessed).</p>
<p>On platforms where this information is not available, returns the same as <a href="qfileinfo.html#lastModified">lastModified</a>().</p>
<p><b>See also </b><a href="qfileinfo.html#created">created</a>() and <a href="qfileinfo.html#lastModified">lastModified</a>().</p>
<!-- @@@lastRead -->
<!-- $$$makeAbsolute[overload1]$$$makeAbsolute -->
<h3 class="fn" id="makeAbsolute"><a name="makeAbsolute"></a><span class="type">bool</span> QFileInfo::<span class="name">makeAbsolute</span>()</h3>
<p>Converts the file's path to an absolute path if it is not already in that form. Returns <code>true</code> to indicate that the path was converted; otherwise returns <code>false</code> to indicate that the path was already absolute.</p>
<p><b>See also </b><a href="qfileinfo.html#filePath">filePath</a>() and <a href="qfileinfo.html#isRelative">isRelative</a>().</p>
<!-- @@@makeAbsolute -->
<!-- $$$owner[overload1]$$$owner -->
<h3 class="fn" id="owner"><a name="owner"></a><span class="type"><a href="qstring.html">QString</a></span> QFileInfo::<span class="name">owner</span>() const</h3>
<p>Returns the owner of the file. On systems where files do not have owners, or if an error occurs, an empty string is returned.</p>
<p>This function can be time consuming under Unix (in the order of milliseconds). On Windows, it will return an empty string unless the <a href="qfileinfo.html#ntfs-permissions">NTFS permissions</a> check has been enabled.</p>
<p><b>See also </b><a href="qfileinfo.html#ownerId">ownerId</a>(), <a href="qfileinfo.html#group">group</a>(), and <a href="qfileinfo.html#groupId">groupId</a>().</p>
<!-- @@@owner -->
<!-- $$$ownerId[overload1]$$$ownerId -->
<h3 class="fn" id="ownerId"><a name="ownerId"></a><span class="type"><a href="qtglobal.html#uint-typedef">uint</a></span> QFileInfo::<span class="name">ownerId</span>() const</h3>
<p>Returns the id of the owner of the file.</p>
<p>On Windows and on systems where files do not have owners this function returns ((uint) -2).</p>
<p><b>See also </b><a href="qfileinfo.html#owner">owner</a>(), <a href="qfileinfo.html#group">group</a>(), and <a href="qfileinfo.html#groupId">groupId</a>().</p>
<!-- @@@ownerId -->
<!-- $$$path[overload1]$$$path -->
<h3 class="fn" id="path"><a name="path"></a><span class="type"><a href="qstring.html">QString</a></span> QFileInfo::<span class="name">path</span>() const</h3>
<p>Returns the file's path. This doesn't include the file name.</p>
<p>Note that, if this <a href="qfileinfo.html">QFileInfo</a> object is given a path ending in a slash, the name of the file is considered empty and this function will return the entire path.</p>
<p><b>See also </b><a href="qfileinfo.html#filePath">filePath</a>(), <a href="qfileinfo.html#absolutePath">absolutePath</a>(), <a href="qfileinfo.html#canonicalPath">canonicalPath</a>(), <a href="qfileinfo.html#dir">dir</a>(), <a href="qfileinfo.html#fileName">fileName</a>(), and <a href="qfileinfo.html#isRelative">isRelative</a>().</p>
<!-- @@@path -->
<!-- $$$permission[overload1]$$$permissionQFile::Permissions -->
<h3 class="fn" id="permission"><a name="permission"></a><span class="type">bool</span> QFileInfo::<span class="name">permission</span>(<span class="type"><a href="qfiledevice.html#Permission-enum">QFile::Permissions</a></span> <i>permissions</i>) const</h3>
<p>Tests for file permissions. The <i>permissions</i> argument can be several flags of type <a href="qfiledevice.html#Permission-enum">QFile::Permissions</a> OR-ed together to check for permission combinations.</p>
<p>On systems where files do not have permissions this function always returns <code>true</code>.</p>
<p><b>Note: </b>The result might be inaccurate on Windows if the <a href="qfileinfo.html#ntfs-permissions">NTFS permissions</a> check has not been enabled.</p><p>Example:</p>
<pre class="cpp">
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> fi(<span class="string">"/tmp/archive.tar.gz"</span>);
<span class="keyword">if</span> (fi<span class="operator">.</span>permission(<span class="type"><a href="qfile.html">QFile</a></span><span class="operator">::</span>WriteUser <span class="operator">|</span> <span class="type"><a href="qfile.html">QFile</a></span><span class="operator">::</span>ReadGroup))
<a href="qtglobal.html#qWarning">qWarning</a>(<span class="string">"I can change the file; my group can read the file"</span>);
<span class="keyword">if</span> (fi<span class="operator">.</span>permission(<span class="type"><a href="qfile.html">QFile</a></span><span class="operator">::</span>WriteGroup <span class="operator">|</span> <span class="type"><a href="qfile.html">QFile</a></span><span class="operator">::</span>WriteOther))
<a href="qtglobal.html#qWarning">qWarning</a>(<span class="string">"The group or others can change the file"</span>);
</pre>
<p><b>See also </b><a href="qfileinfo.html#isReadable">isReadable</a>(), <a href="qfileinfo.html#isWritable">isWritable</a>(), and <a href="qfileinfo.html#isExecutable">isExecutable</a>().</p>
<!-- @@@permission -->
<!-- $$$permissions[overload1]$$$permissions -->
<h3 class="fn" id="permissions"><a name="permissions"></a><span class="type"><a href="qfiledevice.html#Permission-enum">QFile::Permissions</a></span> QFileInfo::<span class="name">permissions</span>() const</h3>
<p>Returns the complete OR-ed together combination of <a href="qfiledevice.html#Permission-enum">QFile::Permissions</a> for the file.</p>
<p><b>Note: </b>The result might be inaccurate on Windows if the <a href="qfileinfo.html#ntfs-permissions">NTFS permissions</a> check has not been enabled.</p><!-- @@@permissions -->
<!-- $$$refresh[overload1]$$$refresh -->
<h3 class="fn" id="refresh"><a name="refresh"></a><span class="type">void</span> QFileInfo::<span class="name">refresh</span>()</h3>
<p>Refreshes the information about the file, i.e. reads in information from the file system the next time a cached property is fetched.</p>
<!-- @@@refresh -->
<!-- $$$setCaching[overload1]$$$setCachingbool -->
<h3 class="fn" id="setCaching"><a name="setCaching"></a><span class="type">void</span> QFileInfo::<span class="name">setCaching</span>(<span class="type">bool</span> <i>enable</i>)</h3>
<p>If <i>enable</i> is true, enables caching of file information. If <i>enable</i> is false caching is disabled.</p>
<p>When caching is enabled, <a href="qfileinfo.html">QFileInfo</a> reads the file information from the file system the first time it's needed, but generally not later.</p>
<p>Caching is enabled by default.</p>
<p><b>See also </b><a href="qfileinfo.html#refresh">refresh</a>() and <a href="qfileinfo.html#caching">caching</a>().</p>
<!-- @@@setCaching -->
<!-- $$$setFile[overload1]$$$setFileconstQString& -->
<h3 class="fn" id="setFile"><a name="setFile"></a><span class="type">void</span> QFileInfo::<span class="name">setFile</span>(const <span class="type"><a href="qstring.html">QString</a></span> &<i>file</i>)</h3>
<p>Sets the file that the <a href="qfileinfo.html">QFileInfo</a> provides information about to <i>file</i>.</p>
<p>The <i>file</i> can also include an absolute or relative file path. Absolute paths begin with the directory separator (e.g. "/" under Unix) or a drive specification (under Windows). Relative file names begin with a directory name or a file name and specify a path relative to the current directory.</p>
<p>Example:</p>
<pre class="cpp">
<span class="type"><a href="qstring.html">QString</a></span> absolute <span class="operator">=</span> <span class="string">"/local/bin"</span>;
<span class="type"><a href="qstring.html">QString</a></span> relative <span class="operator">=</span> <span class="string">"local/bin"</span>;
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> absFile(absolute);
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> relFile(relative);
<span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>setCurrent(<span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>rootPath());
<span class="comment">// absFile and relFile now point to the same file</span>
<span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>setCurrent(<span class="string">"/tmp"</span>);
<span class="comment">// absFile now points to "/local/bin",</span>
<span class="comment">// while relFile points to "/tmp/local/bin"</span>
</pre>
<p><b>See also </b><a href="qfileinfo.html#isFile">isFile</a>(), <a href="qfileinfo.html#isRelative">isRelative</a>(), <a href="qdir.html#setCurrent">QDir::setCurrent</a>(), and <a href="qdir.html#isRelativePath">QDir::isRelativePath</a>().</p>
<!-- @@@setFile -->
<!-- $$$setFile$$$setFileconstQFile& -->
<h3 class="fn" id="setFile-1"><a name="setFile-1"></a><span class="type">void</span> QFileInfo::<span class="name">setFile</span>(const <span class="type"><a href="qfile.html">QFile</a></span> &<i>file</i>)</h3>
<p>This is an overloaded function.</p>
<p>Sets the file that the <a href="qfileinfo.html">QFileInfo</a> provides information about to <i>file</i>.</p>
<p>If <i>file</i> includes a relative path, the <a href="qfileinfo.html">QFileInfo</a> will also have a relative path.</p>
<p><b>See also </b><a href="qfileinfo.html#isRelative">isRelative</a>().</p>
<!-- @@@setFile -->
<!-- $$$setFile$$$setFileconstQDir&constQString& -->
<h3 class="fn" id="setFile-2"><a name="setFile-2"></a><span class="type">void</span> QFileInfo::<span class="name">setFile</span>(const <span class="type"><a href="qdir.html">QDir</a></span> &<i>dir</i>, const <span class="type"><a href="qstring.html">QString</a></span> &<i>file</i>)</h3>
<p>This is an overloaded function.</p>
<p>Sets the file that the <a href="qfileinfo.html">QFileInfo</a> provides information about to <i>file</i> in directory <i>dir</i>.</p>
<p>If <i>file</i> includes a relative path, the <a href="qfileinfo.html">QFileInfo</a> will also have a relative path.</p>
<p><b>See also </b><a href="qfileinfo.html#isRelative">isRelative</a>().</p>
<!-- @@@setFile -->
<!-- $$$size[overload1]$$$size -->
<h3 class="fn" id="size"><a name="size"></a><span class="type"><a href="qtglobal.html#qint64-typedef">qint64</a></span> QFileInfo::<span class="name">size</span>() const</h3>
<p>Returns the file size in bytes. If the file does not exist or cannot be fetched, 0 is returned.</p>
<p><b>See also </b><a href="qfileinfo.html#exists">exists</a>().</p>
<!-- @@@size -->
<!-- $$$suffix[overload1]$$$suffix -->
<h3 class="fn" id="suffix"><a name="suffix"></a><span class="type"><a href="qstring.html">QString</a></span> QFileInfo::<span class="name">suffix</span>() const</h3>
<p>Returns the suffix (extension) of the file.</p>
<p>The suffix consists of all characters in the file after (but not including) the last '.'.</p>
<p>Example:</p>
<pre class="cpp">
<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> fi(<span class="string">"/tmp/archive.tar.gz"</span>);
<span class="type"><a href="qstring.html">QString</a></span> ext <span class="operator">=</span> fi<span class="operator">.</span>suffix(); <span class="comment">// ext = "gz"</span>
</pre>
<p>The suffix of a file is computed equally on all platforms, independent of file naming conventions (e.g., ".bashrc" on Unix has an empty base name, and the suffix is "bashrc").</p>
<p><b>See also </b><a href="qfileinfo.html#fileName">fileName</a>(), <a href="qfileinfo.html#completeSuffix">completeSuffix</a>(), <a href="qfileinfo.html#baseName">baseName</a>(), and <a href="qfileinfo.html#completeBaseName">completeBaseName</a>().</p>
<!-- @@@suffix -->
<!-- $$$swap[overload1]$$$swapQFileInfo& -->
<h3 class="fn" id="swap"><a name="swap"></a><span class="type">void</span> QFileInfo::<span class="name">swap</span>(<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> &<i>other</i>)</h3>
<p>Swaps this file info with <i>other</i>. This function is very fast and never fails.</p>
<p>This function was introduced in Qt 5.0.</p>
<!-- @@@swap -->
<!-- $$$symLinkTarget[overload1]$$$symLinkTarget -->
<h3 class="fn" id="symLinkTarget"><a name="symLinkTarget"></a><span class="type"><a href="qstring.html">QString</a></span> QFileInfo::<span class="name">symLinkTarget</span>() const</h3>
<p>Returns the absolute path to the file or directory a symbolic link points to, or an empty string if the object isn't a symbolic link.</p>
<p>This name may not represent an existing file; it is only a string. <a href="qfileinfo.html#exists">QFileInfo::exists</a>() returns <code>true</code> if the symlink points to an existing file.</p>
<p>This function was introduced in Qt 4.2.</p>
<p><b>See also </b><a href="qfileinfo.html#exists">exists</a>(), <a href="qfileinfo.html#isSymLink">isSymLink</a>(), <a href="qfileinfo.html#isDir">isDir</a>(), and <a href="qfileinfo.html#isFile">isFile</a>().</p>
<!-- @@@symLinkTarget -->
<!-- $$$operator!=[overload1]$$$operator!=constQFileInfo& -->
<h3 class="fn" id="operator-not-eq"><a name="operator-not-eq"></a><span class="type">bool</span> QFileInfo::<span class="name">operator!=</span>(const <span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> &<i>fileinfo</i>) const</h3>
<p>Returns <code>true</code> if this <a href="qfileinfo.html">QFileInfo</a> object refers to a different file than the one specified by <i>fileinfo</i>; otherwise returns <code>false</code>.</p>
<p><b>See also </b><a href="qfileinfo.html#operator-eq-eq">operator==</a>().</p>
<!-- @@@operator!= -->
<!-- $$$operator=[overload1]$$$operator=constQFileInfo& -->
<h3 class="fn" id="operator-eq"><a name="operator-eq"></a><span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> &QFileInfo::<span class="name">operator=</span>(const <span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> &<i>fileinfo</i>)</h3>
<p>Makes a copy of the given <i>fileinfo</i> and assigns it to this <a href="qfileinfo.html">QFileInfo</a>.</p>
<!-- @@@operator= -->
<!-- $$$operator=$$$operator=QFileInfo&& -->
<h3 class="fn" id="operator-eq-1"><a name="operator-eq-1"></a><span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> &QFileInfo::<span class="name">operator=</span>(<span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> &&<i>other</i>)</h3>
<p>Move-assigns <i>other</i> to this <a href="qfileinfo.html">QFileInfo</a> instance.</p>
<p>This function was introduced in Qt 5.2.</p>
<!-- @@@operator= -->
<!-- $$$operator==[overload1]$$$operator==constQFileInfo& -->
<h3 class="fn" id="operator-eq-eq"><a name="operator-eq-eq"></a><span class="type">bool</span> QFileInfo::<span class="name">operator==</span>(const <span class="type"><a href="qfileinfo.html#QFileInfo">QFileInfo</a></span> &<i>fileinfo</i>) const</h3>
<p>Returns <code>true</code> if this <a href="qfileinfo.html">QFileInfo</a> object refers to a file in the same location as <i>fileinfo</i>; otherwise returns <code>false</code>.</p>
<p>Note that the result of comparing two empty <a href="qfileinfo.html">QFileInfo</a> objects, containing no file references (file paths that do not exist or are empty), is undefined.</p>
<p><b>Warning:</b> This will not compare two different symbolic links pointing to the same file.</p>
<p><b>Warning:</b> Long and short file names that refer to the same file on Windows are treated as if they referred to different files.</p>
<p><b>See also </b><a href="qfileinfo.html#operator-not-eq">operator!=</a>().</p>
<!-- @@@operator== -->
</div>
<div class="relnonmem">
<h2>Related Non-Members</h2>
<!-- $$$QFileInfoList -->
<h3 class="fn" id="QFileInfoList-typedef"><a name="QFileInfoList-typedef"></a>typedef <span class="name">QFileInfoList</span></h3>
<p>Synonym for <a href="qlist.html">QList</a><<a href="qfileinfo.html">QFileInfo</a>>.</p>
<!-- @@@QFileInfoList -->
</div>
</div>
</div>
</div>
</div>
</div>
<div class="footer">
<p>
<acronym title="Copyright">©</acronym> 2017 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
of their respective owners. </p>
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</html>
distrib
>
Mageia
>
6
>
armv5tl
>
media
>
core-updates
>
by-pkgid
>
768f7d9f703884aa2562bf0a651086df
>
files
>
379
