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<td >Qt 5.9</td><td ><a href="qdoc-index.html">QDoc Manual</a></td><td >Status</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right">Qt 5.9.5 Reference Documentation</td>
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<h3><a name="toc">Contents</a></h3>
<ul>
<li class="level1"><a href="#abstract-and-qmlabstract">\abstract and \qmlabstract</a></li>
<li class="level1"><a href="#compat">\compat</a></li>
<li class="level1"><a href="#default">\default</a></li>
<li class="level1"><a href="#obsolete">\obsolete</a></li>
<li class="level1"><a href="#internal">\internal</a></li>
<li class="level1"><a href="#preliminary">\preliminary</a></li>
<li class="level1"><a href="#since">\since</a></li>
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<h1 class="title">Status</h1>
<span class="subtitle"></span>
<!-- $$$16-qdoc-commands-status.html-description -->
<div class="descr"> <a name="details"></a>
<p>These commands are for indicating that a documented element has some special status. The element could be marked as about to be made obsolete, or that it is provided for compatibility with an earlier version, or is simply not to be included in the public interface. The <a href="16-qdoc-commands-status.html#since-command">\since</a> command is for specifying the version number in which a function or class first appeared. The <a href="16-qdoc-commands-status.html#qmlabstract-command">\qmlabstract</a> command is for marking a QML type as an abstract base class.</p>
<a name="abstract-command"></a><a name="qmlabstract-command"></a><a name="abstract-and-qmlabstract"></a>
<h2 id="abstract-and-qmlabstract">\abstract and \qmlabstract</h2>
<p>\abstract is a synonym for the \qmlabstract command. Add this command to the <a href="13-qdoc-commands-topics.html#qmltype-command">\qmltype</a> comment for a QML type when that type is meant to be used <i>only</i> as an abstract base type. When a QML type is abstract, it means that the QML type that can't be instantiated. Instead, the properties in its public API are included in the public properties list on the reference page for each QML type that inherits the abstract QML type. The properties are documented as if they are properties of the inheriting QML type.</p>
<p>Normally, when a QML type is marked with <i>\qmlabstract</i>, it is also marked with <i>\internal</i> so that its reference page is not generated. It the abstract QML type is not marked internal, it will have a reference page in the documentation.</p>
<a name="compat-command"></a><a name="compat"></a>
<h2 id="compat">\compat</h2>
<p>The \compat command is for indicating that a class or function is part of the support library provided to keep old source code working.</p>
<p>The command must stand on its own line.</p>
<p>Usually an equivalent function or class is provided as an alternative.</p>
<p>If the command is used in the documentation of a class, the command expands to a warning that the referenced class is part of the support library. The warning is located at the top of the documentation page.</p>
<pre class="cpp">
\beginqdoc
\<span class="keyword">class</span> MyQt3SupportClass
\compat
\endqdoc
</pre>
<p>QDoc renders this at the top of the MyQt3SupportClass class reference page.</p>
<blockquote><p><b>This class is part of the Qt 3 support library.</b> It is provided to keep old source code working. We strongly advise against using it in new code. See the <a href="http://doc.qt.io/qt-4.8/porting4.html">Porting Guide</a> for more information.</p>
</blockquote>
<p>If the command is used when documenting a function, QDoc will create and link to a separate page documenting Qt 3 support members when generating the reference documentation for the associated class.</p>
<pre class="cpp">
\beginqdoc
\fn MyClass<span class="operator">::</span>MyQt3SupportMemberFunction
\compat
Use MyNewFunction() instead<span class="operator">.</span>
\endqdoc
</pre>
<p>QDoc renders this in <code>myclass-qt3.html</code> as:</p>
<blockquote> <h1>Qt 3 Support Members for MyClass</h1>
<p><b>The following class members are part of the Qt 3 support layer.</b> They are provided to help you port old code to Qt 4. We advise against using them in new code.</p>
<p>...</p>
<ul>
<li>void MyQt3SupportMemberFunction()</li>
<li>...</li>
</ul>
<hr />
<h2>Member Function Documentation</h2>
<h3>void MyQt3SupportMemberFunction ()</h3>
<p>Use MyNewFunction() instead.</p>
<p>...</p>
</blockquote>
<a name="default-command"></a><a name="default"></a>
<h2 id="default">\default</h2>
<p>The \default command is for marking a QML property as the default property. The word <code>default</code> is displayed in the documentation of the property.</p>
<pre class="cpp">
<span class="operator">/</span> <span class="operator">*</span><span class="operator">!</span>
\qmlproperty list<span class="operator"><</span>Change<span class="operator">></span> State<span class="operator">::</span>changes
This property holds the changes to apply <span class="keyword">for</span> <span class="keyword">this</span> state<span class="operator">.</span>
\<span class="keyword">default</span>
By <span class="keyword">default</span> these changes are applied against the <span class="keyword">default</span> state<span class="operator">.</span> If the state
extends another state<span class="operator">,</span> then the changes are applied against the state being
extended<span class="operator">.</span>
<span class="operator">*</span> <span class="operator">/</span>
</pre>
<p>See how QDoc renders this property on the reference page for the <a href="../qtgui/qopenglpaintdevice.html#state-changes">State</a> type.</p>
<a name="obsolete-command"></a><a name="obsolete"></a>
<h2 id="obsolete">\obsolete</h2>
<p>The \obsolete command is for indicating that a function is being deprecated, and it should no longer be used in new code. There is no guarantee for how long it will remain in the library.</p>
<p>The command must stand on its own line.</p>
<p>When generating the reference documentation for a class, QDoc will create and link to a separate page documenting its obsolete functions. Usually an equivalent function is provided as an alternative.</p>
<pre class="cpp">
<span class="operator">/</span> <span class="operator">*</span><span class="operator">!</span>
\fn MyClass<span class="operator">::</span>MyObsoleteFunction
\obsolete
Use MyNewFunction() instead<span class="operator">.</span>
<span class="operator">*</span> <span class="operator">/</span>
</pre>
<p>QDoc renders this in <code>myclass-obsolete.html</code> as:</p>
<blockquote> <h1>Obsolete Members for MyClass</h1>
<p><b>The following class members are obsolete.</b> They are provided to keep old source code working. We strongly advise against using them in new code.</p>
<p>...</p>
<ul>
<li>void MyObsoleteFunction() <code>(obsolete)</code></li>
<li>...</li>
</ul>
<hr />
<h2>Member Function Documentation</h2>
<h3>void MyObsoleteFunction ()</h3>
<p>Use MyNewFunction() instead.</p>
<p>...</p>
</blockquote>
<a name="internal-command"></a><a name="internal"></a>
<h2 id="internal">\internal</h2>
<p>The \internal command indicates that the referenced function is not part of the public interface.</p>
<p>The command must stand on its own line.</p>
<p>QDoc ignores the documentation as well as the documented item, when generating the associated class reference documentation.</p>
<pre class="cpp">
<span class="operator">/</span> <span class="operator">*</span><span class="operator">!</span>
\internal
Tries to find the decimal separator<span class="operator">.</span> If it can<span class="char">'t find
it and the thousand delimiter is != '</span><span class="operator">.</span><span class="char">' it will try to
find a '</span><span class="operator">.</span><span class="char">';
* /
int QDoubleSpinBoxPrivate::findDelimiter
(const QString &str, int index) const
{
int dotindex = str.indexOf(delimiter, index);
if (dotindex == -1 && thousand != dot && delimiter != dot)
dotindex = str.indexOf(dot, index);
return dotindex;
}
</span>
</pre>
<p>This function will not be included in the documentation.</p>
<a name="preliminary-command"></a><a name="preliminary"></a>
<h2 id="preliminary">\preliminary</h2>
<p>The \preliminary command is for indicating that a referenced function is still under development.</p>
<p>The command must stand on its own line.</p>
<p>The \preliminary command expands to a notification in the function documentation, and marks the function as preliminary when it appears in lists.</p>
<pre class="cpp">
<span class="operator">/</span> <span class="operator">*</span><span class="operator">!</span>
\preliminary
Returns information about the joining type attributes of the
character (needed <span class="keyword">for</span> certain languages such as Arabic <span class="keyword">or</span>
Syriac)<span class="operator">.</span>
<span class="operator">*</span> <span class="operator">/</span>
<span class="type"><a href="../qtcore/qchar.html">QChar</a></span><span class="operator">::</span>JoiningType <span class="type"><a href="../qtcore/qchar.html">QChar</a></span><span class="operator">::</span>joiningType() <span class="keyword">const</span>
{
<span class="keyword">return</span> <span class="type"><a href="../qtcore/qchar.html">QChar</a></span><span class="operator">::</span>joiningType(ucs);
}
</pre>
<p>QDoc renders this as:</p>
<blockquote> <h3>
<a href="http://doc.qt.io/qt-5/qchar.html#JoiningType-enum">JoiningType</a>
QChar::joiningType() const</h3>
<p><b>This function is under development and subject to change.</b></p>
<p>Returns information about the joining type attributes of the character (needed for certain languages such as Arabic or Syriac).</p>
</blockquote>
<p>And the function's entry in <a href="../qtcore/qchar.html">QChar</a>'s list of public functions will be rendered as:</p>
<blockquote><ul>
<li>...</li>
<li>JoiningType <a href="../qtcore/qchar.html#joiningType">joiningType</a>() const <code>(preliminary)</code></li>
<li>...</li>
</ul>
</blockquote>
<a name="since-command"></a><a name="since"></a>
<h2 id="since">\since</h2>
<p>The \since command tells in which minor release the associated functionality was added.</p>
<pre class="cpp">
<span class="operator">/</span> <span class="operator">*</span><span class="operator">!</span>
\since <span class="number">4.1</span>
Returns an icon <span class="keyword">for</span> \a standardIcon<span class="operator">.</span>
<span class="operator">.</span><span class="operator">.</span><span class="operator">.</span>
\sa standardPixmap()
<span class="operator">*</span> <span class="operator">/</span>
<span class="type"><a href="../qtgui/qicon.html">QIcon</a></span> <span class="type"><a href="../qtwidgets/qstyle.html">QStyle</a></span><span class="operator">::</span>standardIcon(StandardPixmap standardIcon<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="../qtwidgets/qstyleoption.html">QStyleOption</a></span> <span class="operator">*</span>option<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="../qtwidgets/qwidget.html">QWidget</a></span> <span class="operator">*</span>widget) <span class="keyword">const</span>
{
}
</pre>
<p>QDoc renders this as:</p>
<blockquote> <h3>QIcon QStyle::standardIcon(StandardPixmap standardIcon, const QStyleOption *option, const QWidget *widget) const</h3>
<p>This function was introduced in Qt version 4.1</p>
<p>Returns an icon for <i>standardIcon</i>.</p>
<p>...</p>
<p>See also <a href="../qtwidgets/qstyle-obsolete.html#standardPixmap">standardPixmap()</a>.</p>
</blockquote>
<p>QDoc generates the "Qt" reference from the <a href="25-qdoc-configuration-derivedprojects.html#project"><code>project</code></a> configuration variable. For that reason this reference will change according to the current documentation project.</p>
<p>See also <a href="25-qdoc-configuration-derivedprojects.html#project"><code>project</code></a>.</p>
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