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<li class="level1"><a href="#public-types">Public Types</a></li>
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<li class="level1"><a href="#details">Detailed Description</a></li>
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<h1 class="title">QMetaMethod Class Reference</h1>
<!-- $$$QMetaMethod-brief -->
<p>The QMetaMethod class provides meta-data about a member function. <a href="#details">More...</a></p>
<!-- @@@QMetaMethod -->
<pre class="cpp"> <span class="preprocessor">#include <QMetaMethod></span></pre><ul>
<li><a href="qmetamethod-members.html">List of all members, including inherited members</a></li>
</ul>
<a name="public-types"></a>
<h2>Public Types</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> enum </td><td class="memItemRight bottomAlign"><b><a href="qmetamethod.html#Access-enum">Access</a></b> { Private, Protected, Public }</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> enum </td><td class="memItemRight bottomAlign"><b><a href="qmetamethod.html#MethodType-enum">MethodType</a></b> { Method, Signal, Slot, Constructor }</td></tr>
</table>
<a name="public-functions"></a>
<h2>Public Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> Access </td><td class="memItemRight bottomAlign"><b><a href="qmetamethod.html#access">access</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qmetamethod.html#invoke">invoke</a></b> ( QObject * <i>object</i>, Qt::ConnectionType <i>connectionType</i>, QGenericReturnArgument <i>returnValue</i>, QGenericArgument <i>val0</i> = QGenericArgument( 0 ), QGenericArgument <i>val1</i> = QGenericArgument(), QGenericArgument <i>val2</i> = QGenericArgument(), QGenericArgument <i>val3</i> = QGenericArgument(), QGenericArgument <i>val4</i> = QGenericArgument(), QGenericArgument <i>val5</i> = QGenericArgument(), QGenericArgument <i>val6</i> = QGenericArgument(), QGenericArgument <i>val7</i> = QGenericArgument(), QGenericArgument <i>val8</i> = QGenericArgument(), QGenericArgument <i>val9</i> = QGenericArgument() ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qmetamethod.html#invoke-2">invoke</a></b> ( QObject * <i>object</i>, QGenericReturnArgument <i>returnValue</i>, QGenericArgument <i>val0</i> = QGenericArgument( 0 ), QGenericArgument <i>val1</i> = QGenericArgument(), QGenericArgument <i>val2</i> = QGenericArgument(), QGenericArgument <i>val3</i> = QGenericArgument(), QGenericArgument <i>val4</i> = QGenericArgument(), QGenericArgument <i>val5</i> = QGenericArgument(), QGenericArgument <i>val6</i> = QGenericArgument(), QGenericArgument <i>val7</i> = QGenericArgument(), QGenericArgument <i>val8</i> = QGenericArgument(), QGenericArgument <i>val9</i> = QGenericArgument() ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qmetamethod.html#invoke-3">invoke</a></b> ( QObject * <i>object</i>, Qt::ConnectionType <i>connectionType</i>, QGenericArgument <i>val0</i> = QGenericArgument( 0 ), QGenericArgument <i>val1</i> = QGenericArgument(), QGenericArgument <i>val2</i> = QGenericArgument(), QGenericArgument <i>val3</i> = QGenericArgument(), QGenericArgument <i>val4</i> = QGenericArgument(), QGenericArgument <i>val5</i> = QGenericArgument(), QGenericArgument <i>val6</i> = QGenericArgument(), QGenericArgument <i>val7</i> = QGenericArgument(), QGenericArgument <i>val8</i> = QGenericArgument(), QGenericArgument <i>val9</i> = QGenericArgument() ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qmetamethod.html#invoke-4">invoke</a></b> ( QObject * <i>object</i>, QGenericArgument <i>val0</i> = QGenericArgument( 0 ), QGenericArgument <i>val1</i> = QGenericArgument(), QGenericArgument <i>val2</i> = QGenericArgument(), QGenericArgument <i>val3</i> = QGenericArgument(), QGenericArgument <i>val4</i> = QGenericArgument(), QGenericArgument <i>val5</i> = QGenericArgument(), QGenericArgument <i>val6</i> = QGenericArgument(), QGenericArgument <i>val7</i> = QGenericArgument(), QGenericArgument <i>val8</i> = QGenericArgument(), QGenericArgument <i>val9</i> = QGenericArgument() ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qmetamethod.html#methodIndex">methodIndex</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> MethodType </td><td class="memItemRight bottomAlign"><b><a href="qmetamethod.html#methodType">methodType</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QList<QByteArray> </td><td class="memItemRight bottomAlign"><b><a href="qmetamethod.html#parameterNames">parameterNames</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QList<QByteArray> </td><td class="memItemRight bottomAlign"><b><a href="qmetamethod.html#parameterTypes">parameterTypes</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> const char * </td><td class="memItemRight bottomAlign"><b><a href="qmetamethod.html#signature">signature</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> const char * </td><td class="memItemRight bottomAlign"><b><a href="qmetamethod.html#tag">tag</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> const char * </td><td class="memItemRight bottomAlign"><b><a href="qmetamethod.html#typeName">typeName</a></b> () const</td></tr>
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<a name="details"></a>
<!-- $$$QMetaMethod-description -->
<div class="descr">
<h2>Detailed Description</h2>
<p>The QMetaMethod class provides meta-data about a member function.</p>
<p>A QMetaMethod has a <a href="qmetamethod.html#methodType">methodType</a>(), a <a href="qmetamethod.html#signature">signature</a>(), a list of <a href="qmetamethod.html#parameterTypes">parameterTypes</a>() and <a href="qmetamethod.html#parameterNames">parameterNames</a>(), a return <a href="qmetamethod.html#typeName">typeName</a>(), a <a href="qmetamethod.html#tag">tag</a>(), and an <a href="qmetamethod.html#access">access</a>() specifier. You can use <a href="qmetamethod.html#invoke">invoke</a>() to invoke the method on an arbitrary <a href="qobject.html">QObject</a>.</p>
<p>A method will only be registered with the meta-object system if it is a slot, a signal, or declared with the <a href="qobject.html#Q_INVOKABLE">Q_INVOKABLE</a> macro. Constructors can also be registered with <a href="qobject.html#Q_INVOKABLE">Q_INVOKABLE</a>.</p>
</div>
<p><b>See also </b><a href="qmetaobject.html">QMetaObject</a>, <a href="qmetaenum.html">QMetaEnum</a>, <a href="qmetaproperty.html">QMetaProperty</a>, and <a href="properties.html#qt-s-property-system">Qt's Property System</a>.</p>
<!-- @@@QMetaMethod -->
<div class="types">
<h2>Member Type Documentation</h2>
<!-- $$$Access$$$Private$$$Protected$$$Public -->
<h3 class="fn"><a name="Access-enum"></a>enum QMetaMethod::<span class="name">Access</span></h3>
<p>This enum describes the access level of a method, following the conventions used in C++.</p>
<table class="valuelist"><tr><th class="tblConst">Constant</th><th class="tblVal">Value</th></tr>
<tr><td class="topAlign"><tt>QMetaMethod::Private</tt></td><td class="topAlign"><tt>0</tt></td></tr>
<tr><td class="topAlign"><tt>QMetaMethod::Protected</tt></td><td class="topAlign"><tt>1</tt></td></tr>
<tr><td class="topAlign"><tt>QMetaMethod::Public</tt></td><td class="topAlign"><tt>2</tt></td></tr>
</table>
<!-- @@@Access -->
<!-- $$$MethodType$$$Method$$$Signal$$$Slot$$$Constructor -->
<h3 class="fn"><a name="MethodType-enum"></a>enum QMetaMethod::<span class="name">MethodType</span></h3>
<table class="valuelist"><tr valign="top" class="odd"><th class="tblConst">Constant</th><th class="tblval">Value</th><th class="tbldscr">Description</th></tr>
<tr><td class="topAlign"><tt>QMetaMethod::Method</tt></td><td class="topAlign"><tt>0</tt></td><td class="topAlign">The function is a plain member function.</td></tr>
<tr><td class="topAlign"><tt>QMetaMethod::Signal</tt></td><td class="topAlign"><tt>1</tt></td><td class="topAlign">The function is a signal.</td></tr>
<tr><td class="topAlign"><tt>QMetaMethod::Slot</tt></td><td class="topAlign"><tt>2</tt></td><td class="topAlign">The function is a slot.</td></tr>
<tr><td class="topAlign"><tt>QMetaMethod::Constructor</tt></td><td class="topAlign"><tt>3</tt></td><td class="topAlign">The function is a constructor.</td></tr>
</table>
<!-- @@@MethodType -->
</div>
<div class="func">
<h2>Member Function Documentation</h2>
<!-- $$$access[overload1]$$$access -->
<h3 class="fn"><a name="access"></a><span class="type"><a href="qmetamethod.html#Access-enum">Access</a></span> QMetaMethod::<span class="name">access</span> () const</h3>
<p>Returns the access specification of this method (private, protected, or public).</p>
<p>Signals are always protected, meaning that you can only emit them from the class or from a subclass.</p>
<p><b>See also </b><a href="qmetamethod.html#methodType">methodType</a>().</p>
<!-- @@@access -->
<!-- $$$invoke[overload1]$$$invokeQObject*Qt::ConnectionTypeQGenericReturnArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgument -->
<h3 class="fn"><a name="invoke"></a><span class="type">bool</span> QMetaMethod::<span class="name">invoke</span> ( <span class="type"><a href="qobject.html">QObject</a></span> * <i>object</i>, <span class="type"><a href="qt.html#ConnectionType-enum">Qt::ConnectionType</a></span> <i>connectionType</i>, <span class="type"><a href="qgenericreturnargument.html">QGenericReturnArgument</a></span> <i>returnValue</i>, <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val0</i> = QGenericArgument( 0 ), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val1</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val2</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val3</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val4</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val5</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val6</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val7</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val8</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val9</i> = QGenericArgument() ) const</h3>
<p>Invokes this method on the object <i>object</i>. Returns true if the member could be invoked. Returns false if there is no such member or the parameters did not match.</p>
<p>The invocation can be either synchronous or asynchronous, depending on the <i>connectionType</i>:</p>
<ul>
<li>If <i>connectionType</i> is <a href="qt.html#ConnectionType-enum">Qt::DirectConnection</a>, the member will be invoked immediately.</li>
<li>If <i>connectionType</i> is <a href="qt.html#ConnectionType-enum">Qt::QueuedConnection</a>, a <a href="qevent.html">QEvent</a> will be posted and the member is invoked as soon as the application enters the main event loop.</li>
<li>If <i>connectionType</i> is <a href="qt.html#ConnectionType-enum">Qt::AutoConnection</a>, the member is invoked synchronously if <i>object</i> lives in the same thread as the caller; otherwise it will invoke the member asynchronously.</li>
</ul>
<p>The return value of this method call is placed in <i>returnValue</i>. If the invocation is asynchronous, the return value cannot be evaluated. You can pass up to ten arguments (<i>val0</i>, <i>val1</i>, <i>val2</i>, <i>val3</i>, <i>val4</i>, <i>val5</i>, <i>val6</i>, <i>val7</i>, <i>val8</i>, and <i>val9</i>) to this method call.</p>
<p><a href="qgenericargument.html">QGenericArgument</a> and <a href="qgenericreturnargument.html">QGenericReturnArgument</a> are internal helper classes. Because signals and slots can be dynamically invoked, you must enclose the arguments using the <a href="qmetaobject.html#Q_ARG">Q_ARG</a>() and <a href="qmetaobject.html#Q_RETURN_ARG">Q_RETURN_ARG</a>() macros. <a href="qmetaobject.html#Q_ARG">Q_ARG</a>() takes a type name and a const reference of that type; <a href="qmetaobject.html#Q_RETURN_ARG">Q_RETURN_ARG</a>() takes a type name and a non-const reference.</p>
<p>To asynchronously invoke the <a href="qabstractbutton.html#animateClick">animateClick()</a> slot on a <a href="qpushbutton.html">QPushButton</a>:</p>
<pre class="cpp"> <span class="type">int</span> methodIndex <span class="operator">=</span> pushButton<span class="operator">-</span><span class="operator">></span>metaObject()<span class="operator">-</span><span class="operator">></span>indexOfMethod(<span class="string">"animateClick()"</span>);
<span class="type"><a href="qmetamethod.html">QMetaMethod</a></span> method <span class="operator">=</span> metaObject<span class="operator">-</span><span class="operator">></span>method(methodIndex);
method<span class="operator">.</span>invoke(pushButton<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>QueuedConnection);</pre>
<p>With asynchronous method invocations, the parameters must be of types that are known to Qt's meta-object system, because Qt needs to copy the arguments to store them in an event behind the scenes. If you try to use a queued connection and get the error message</p>
<pre class="cpp"> <span class="type"><a href="qmetamethod.html">QMetaMethod</a></span><span class="operator">::</span>invoke: Unable to handle unregistered datatype <span class="char">'MyType'</span></pre>
<p>call <a href="qmetatype.html#qRegisterMetaType">qRegisterMetaType</a>() to register the data type before you call QMetaMethod::invoke().</p>
<p>To synchronously invoke the <tt>compute(QString, int, double)</tt> slot on some arbitrary object <tt>obj</tt> retrieve its return value:</p>
<pre class="cpp"> <span class="type"><a href="qstring.html">QString</a></span> retVal;
<span class="type"><a href="qbytearray.html">QByteArray</a></span> normalizedSignature <span class="operator">=</span> <span class="type"><a href="qmetaobject.html">QMetaObject</a></span><span class="operator">::</span>normalizedSignature(<span class="string">"compute(QString, int, double)"</span>);
<span class="type">int</span> methodIndex <span class="operator">=</span> obj<span class="operator">-</span><span class="operator">></span>metaObject()<span class="operator">-</span><span class="operator">></span>indexOfMethod(normalizedSignature);
<span class="type"><a href="qmetamethod.html">QMetaMethod</a></span> method <span class="operator">=</span> metaObject<span class="operator">-</span><span class="operator">></span>method(methodIndex);
method<span class="operator">.</span>invoke(obj<span class="operator">,</span>
<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>DirectConnection<span class="operator">,</span>
Q_RETURN_ARG(<span class="type"><a href="qstring.html">QString</a></span><span class="operator">,</span> retVal)<span class="operator">,</span>
Q_ARG(<span class="type"><a href="qstring.html">QString</a></span><span class="operator">,</span> <span class="string">"sqrt"</span>)<span class="operator">,</span>
Q_ARG(<span class="type">int</span><span class="operator">,</span> <span class="number">42</span>)<span class="operator">,</span>
Q_ARG(<span class="type">double</span><span class="operator">,</span> <span class="number">9.7</span>));</pre>
<p><a href="qmetaobject.html#normalizedSignature">QMetaObject::normalizedSignature</a>() is used here to ensure that the format of the signature is what invoke() expects. E.g. extra whitespace is removed.</p>
<p>If the "compute" slot does not take exactly one <a href="qstring.html">QString</a>, one int and one double in the specified order, the call will fail.</p>
<p><b>Warning:</b> this method will not test the validity of the arguments: <i>object</i> must be an instance of the class of the <a href="qmetaobject.html">QMetaObject</a> of which this <a href="qmetamethod.html">QMetaMethod</a> has been constructed with. The arguments must have the same type as the ones expected by the method, else, the behaviour is undefined.</p>
<p><b>See also </b><a href="qmetaobject.html#Q_ARG">Q_ARG</a>(), <a href="qmetaobject.html#Q_RETURN_ARG">Q_RETURN_ARG</a>(), <a href="qmetatype.html#qRegisterMetaType">qRegisterMetaType</a>(), and <a href="qmetaobject.html#invokeMethod">QMetaObject::invokeMethod</a>().</p>
<!-- @@@invoke -->
<!-- $$$invoke$$$invokeQObject*QGenericReturnArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgument -->
<h3 class="fn"><a name="invoke-2"></a><span class="type">bool</span> QMetaMethod::<span class="name">invoke</span> ( <span class="type"><a href="qobject.html">QObject</a></span> * <i>object</i>, <span class="type"><a href="qgenericreturnargument.html">QGenericReturnArgument</a></span> <i>returnValue</i>, <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val0</i> = QGenericArgument( 0 ), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val1</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val2</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val3</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val4</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val5</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val6</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val7</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val8</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val9</i> = QGenericArgument() ) const</h3>
<p>This function overloads <a href="qmetamethod.html#invoke">invoke</a>().</p>
<p>This overload always invokes this method using the connection type <a href="qt.html#ConnectionType-enum">Qt::AutoConnection</a>.</p>
<!-- @@@invoke -->
<!-- $$$invoke$$$invokeQObject*Qt::ConnectionTypeQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgument -->
<h3 class="fn"><a name="invoke-3"></a><span class="type">bool</span> QMetaMethod::<span class="name">invoke</span> ( <span class="type"><a href="qobject.html">QObject</a></span> * <i>object</i>, <span class="type"><a href="qt.html#ConnectionType-enum">Qt::ConnectionType</a></span> <i>connectionType</i>, <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val0</i> = QGenericArgument( 0 ), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val1</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val2</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val3</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val4</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val5</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val6</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val7</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val8</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val9</i> = QGenericArgument() ) const</h3>
<p>This function overloads <a href="qmetamethod.html#invoke">invoke</a>().</p>
<p>This overload can be used if the return value of the member is of no interest.</p>
<!-- @@@invoke -->
<!-- $$$invoke$$$invokeQObject*QGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgument -->
<h3 class="fn"><a name="invoke-4"></a><span class="type">bool</span> QMetaMethod::<span class="name">invoke</span> ( <span class="type"><a href="qobject.html">QObject</a></span> * <i>object</i>, <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val0</i> = QGenericArgument( 0 ), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val1</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val2</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val3</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val4</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val5</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val6</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val7</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val8</i> = QGenericArgument(), <span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <i>val9</i> = QGenericArgument() ) const</h3>
<p>This function overloads <a href="qmetamethod.html#invoke">invoke</a>().</p>
<p>This overload invokes this method using the connection type <a href="qt.html#ConnectionType-enum">Qt::AutoConnection</a> and ignores return values.</p>
<!-- @@@invoke -->
<!-- $$$methodIndex[overload1]$$$methodIndex -->
<h3 class="fn"><a name="methodIndex"></a><span class="type">int</span> QMetaMethod::<span class="name">methodIndex</span> () const</h3>
<p>Returns this method's index.</p>
<p>This function was introduced in Qt 4.6.</p>
<!-- @@@methodIndex -->
<!-- $$$methodType[overload1]$$$methodType -->
<h3 class="fn"><a name="methodType"></a><span class="type"><a href="qmetamethod.html#MethodType-enum">MethodType</a></span> QMetaMethod::<span class="name">methodType</span> () const</h3>
<p>Returns the type of this method (signal, slot, or method).</p>
<p><b>See also </b><a href="qmetamethod.html#access">access</a>().</p>
<!-- @@@methodType -->
<!-- $$$parameterNames[overload1]$$$parameterNames -->
<h3 class="fn"><a name="parameterNames"></a><span class="type"><a href="qlist.html">QList</a></span><<span class="type"><a href="qbytearray.html">QByteArray</a></span>> QMetaMethod::<span class="name">parameterNames</span> () const</h3>
<p>Returns a list of parameter names.</p>
<p><b>See also </b><a href="qmetamethod.html#parameterTypes">parameterTypes</a>() and <a href="qmetamethod.html#signature">signature</a>().</p>
<!-- @@@parameterNames -->
<!-- $$$parameterTypes[overload1]$$$parameterTypes -->
<h3 class="fn"><a name="parameterTypes"></a><span class="type"><a href="qlist.html">QList</a></span><<span class="type"><a href="qbytearray.html">QByteArray</a></span>> QMetaMethod::<span class="name">parameterTypes</span> () const</h3>
<p>Returns a list of parameter types.</p>
<p><b>See also </b><a href="qmetamethod.html#parameterNames">parameterNames</a>() and <a href="qmetamethod.html#signature">signature</a>().</p>
<!-- @@@parameterTypes -->
<!-- $$$signature[overload1]$$$signature -->
<h3 class="fn"><a name="signature"></a>const <span class="type">char</span> * QMetaMethod::<span class="name">signature</span> () const</h3>
<p>Returns the signature of this method (e.g., <tt>setValue(double)</tt>).</p>
<p><b>See also </b><a href="qmetamethod.html#parameterTypes">parameterTypes</a>() and <a href="qmetamethod.html#parameterNames">parameterNames</a>().</p>
<!-- @@@signature -->
<!-- $$$tag[overload1]$$$tag -->
<h3 class="fn"><a name="tag"></a>const <span class="type">char</span> * QMetaMethod::<span class="name">tag</span> () const</h3>
<p>Returns the tag associated with this method.</p>
<p>Tags are special macros recognized by <tt>moc</tt> that make it possible to add extra information about a method.</p>
<p>Tag information can be added in the following way in the function declaration:</p>
<pre class="cpp"> <span class="preprocessor">#define THISISTESTTAG // tag text</span>
<span class="operator">.</span><span class="operator">.</span><span class="operator">.</span>
<span class="keyword">private</span> <span class="keyword">slots</span>:
THISISTESTTAG <span class="type">void</span> testFunc();</pre>
<p>and the information can be accessed by using:</p>
<pre class="cpp"> MainWindow win;
win<span class="operator">.</span>show();
<span class="type">int</span> functionIndex <span class="operator">=</span> win<span class="operator">.</span>metaObject()<span class="operator">-</span><span class="operator">></span>indexOfSlot(<span class="string">"testFunc()"</span>);
<span class="type"><a href="qmetamethod.html">QMetaMethod</a></span> mm <span class="operator">=</span> metaObject()<span class="operator">-</span><span class="operator">></span>method(functionIndex);
<a href="qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> mm<span class="operator">.</span>tag(); <span class="comment">// prints THISISTESTTAG</span></pre>
<p>For the moment, <tt>moc</tt> doesn't support any special tags.</p>
<!-- @@@tag -->
<!-- $$$typeName[overload1]$$$typeName -->
<h3 class="fn"><a name="typeName"></a>const <span class="type">char</span> * QMetaMethod::<span class="name">typeName</span> () const</h3>
<p>Returns the return type of this method, or an empty string if the return type is <i>void</i>.</p>
<!-- @@@typeName -->
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