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Breadcrumbs go here --> <li><a href="modules.html">Modules</a></li> <li><a href="qtcore.html">QtCore</a></li> <li>QMetaObject</li> </ul> </div> <div class="toolbuttons toolblock"> <ul> <li id="smallA" class="t_button">A</li> <li id="medA" class="t_button active">A</li> <li id="bigA" class="t_button">A</li> <li id="print" class="t_button"><a href="javascript:this.print();"> <span>Print</span></a></li> </ul> </div> </div> <div class="content mainContent"> <div class="toc"> <h3><a name="toc">Contents</a></h3> <ul> <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="#macros">Macros</a></li> <li class="level1"><a href="#details">Detailed Description</a></li> </ul> </div> <h1 class="title">QMetaObject Class Reference</h1> <!-- $$$QMetaObject-brief --> <p>The QMetaObject class contains meta-information about Qt objects. <a href="#details">More...</a></p> <!-- @@@QMetaObject --> <pre class="cpp"> <span class="preprocessor">#include <QMetaObject></span></pre><ul> <li><a href="qmetaobject-members.html">List of all members, including inherited members</a></li> </ul> <a name="public-functions"></a> <h2>Public Functions</h2> <table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> QMetaClassInfo </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#classInfo">classInfo</a></b> ( int <i>index</i> ) const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#classInfoCount">classInfoCount</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#classInfoOffset">classInfoOffset</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> const char * </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#className">className</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> QMetaMethod </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#constructor">constructor</a></b> ( int <i>index</i> ) const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#constructorCount">constructorCount</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> QMetaEnum </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#enumerator">enumerator</a></b> ( int <i>index</i> ) const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#enumeratorCount">enumeratorCount</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#enumeratorOffset">enumeratorOffset</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#indexOfClassInfo">indexOfClassInfo</a></b> ( const char * <i>name</i> ) const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#indexOfConstructor">indexOfConstructor</a></b> ( const char * <i>constructor</i> ) const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#indexOfEnumerator">indexOfEnumerator</a></b> ( const char * <i>name</i> ) const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#indexOfMethod">indexOfMethod</a></b> ( const char * <i>method</i> ) const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#indexOfProperty">indexOfProperty</a></b> ( const char * <i>name</i> ) const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#indexOfSignal">indexOfSignal</a></b> ( const char * <i>signal</i> ) const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#indexOfSlot">indexOfSlot</a></b> ( const char * <i>slot</i> ) const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> QMetaMethod </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#method">method</a></b> ( int <i>index</i> ) const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#methodCount">methodCount</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#methodOffset">methodOffset</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> QObject * </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#newInstance">newInstance</a></b> ( 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"> QMetaProperty </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#property">property</a></b> ( int <i>index</i> ) const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#propertyCount">propertyCount</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#propertyOffset">propertyOffset</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> const QMetaObject * </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#superClass">superClass</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> QMetaProperty </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#userProperty">userProperty</a></b> () const</td></tr> </table> <a name="static-public-members"></a> <h2>Static Public Members</h2> <table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#checkConnectArgs">checkConnectArgs</a></b> ( const char * <i>signal</i>, const char * <i>method</i> )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#connectSlotsByName">connectSlotsByName</a></b> ( QObject * <i>object</i> )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#invokeMethod">invokeMethod</a></b> ( QObject * <i>obj</i>, const char * <i>member</i>, Qt::ConnectionType <i>type</i>, QGenericReturnArgument <i>ret</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() )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#invokeMethod-2">invokeMethod</a></b> ( QObject * <i>obj</i>, const char * <i>member</i>, QGenericReturnArgument <i>ret</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() )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#invokeMethod-3">invokeMethod</a></b> ( QObject * <i>obj</i>, const char * <i>member</i>, Qt::ConnectionType <i>type</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() )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#invokeMethod-4">invokeMethod</a></b> ( QObject * <i>obj</i>, const char * <i>member</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() )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> QByteArray </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#normalizedSignature">normalizedSignature</a></b> ( const char * <i>method</i> )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> QByteArray </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#normalizedType">normalizedType</a></b> ( const char * <i>type</i> )</td></tr> </table> <a name="macros"></a> <h2>Macros</h2> <table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> QGenericArgument </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#Q_ARG">Q_ARG</a></b> ( <i>Type</i>, const Type & <i>value</i> )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> QGenericReturnArgument </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject.html#Q_RETURN_ARG">Q_RETURN_ARG</a></b> ( <i>Type</i>, Type & <i>value</i> )</td></tr> </table> <a name="details"></a> <!-- $$$QMetaObject-description --> <div class="descr"> <h2>Detailed Description</h2> <p>The QMetaObject class contains meta-information about Qt objects.</p> <p>The Qt <a href="metaobjects.html#meta-object-system">Meta-Object System</a> in Qt is responsible for the signals and slots inter-object communication mechanism, runtime type information, and the Qt property system. A single QMetaObject instance is created for each <a href="qobject.html">QObject</a> subclass that is used in an application, and this instance stores all the meta-information for the <a href="qobject.html">QObject</a> subclass. This object is available as <a href="qobject.html#metaObject">QObject::metaObject</a>().</p> <p>This class is not normally required for application programming, but it is useful if you write meta-applications, such as scripting engines or GUI builders.</p> <p>The functions you are most likely to find useful are these:</p> <ul> <li><a href="qmetaobject.html#className">className</a>() returns the name of a class.</li> <li><a href="qmetaobject.html#superClass">superClass</a>() returns the superclass's meta-object.</li> <li><a href="qmetaobject.html#method">method</a>() and <a href="qmetaobject.html#methodCount">methodCount</a>() provide information about a class's meta-methods (signals, slots and other <a href="qobject.html#Q_INVOKABLE">invokable</a> member functions).</li> <li><a href="qmetaobject.html#enumerator">enumerator</a>() and <a href="qmetaobject.html#enumeratorCount">enumeratorCount</a>() and provide information about a class's enumerators.</li> <li><a href="qmetaobject.html#propertyCount">propertyCount</a>() and <a href="qmetaobject.html#property">property</a>() provide information about a class's properties.</li> <li><a href="qmetaobject.html#constructor">constructor</a>() and <a href="qmetaobject.html#constructorCount">constructorCount</a>() provide information about a class's meta-constructors.</li> </ul> <p>The index functions <a href="qmetaobject.html#indexOfConstructor">indexOfConstructor</a>(), <a href="qmetaobject.html#indexOfMethod">indexOfMethod</a>(), <a href="qmetaobject.html#indexOfEnumerator">indexOfEnumerator</a>(), and <a href="qmetaobject.html#indexOfProperty">indexOfProperty</a>() map names of constructors, member functions, enumerators, or properties to indexes in the meta-object. For example, Qt uses <a href="qmetaobject.html#indexOfMethod">indexOfMethod</a>() internally when you connect a signal to a slot.</p> <p>Classes can also have a list of <i>name</i>--<i>value</i> pairs of additional class information, stored in <a href="qmetaclassinfo.html">QMetaClassInfo</a> objects. The number of pairs is returned by <a href="qmetaobject.html#classInfoCount">classInfoCount</a>(), single pairs are returned by <a href="qmetaobject.html#classInfo">classInfo</a>(), and you can search for pairs with <a href="qmetaobject.html#indexOfClassInfo">indexOfClassInfo</a>().</p> </div> <p><b>See also </b><a href="qmetaclassinfo.html">QMetaClassInfo</a>, <a href="qmetaenum.html">QMetaEnum</a>, <a href="qmetamethod.html">QMetaMethod</a>, <a href="qmetaproperty.html">QMetaProperty</a>, <a href="qmetatype.html">QMetaType</a>, and <a href="metaobjects.html#meta-object-system">Meta-Object System</a>.</p> <!-- @@@QMetaObject --> <div class="func"> <h2>Member Function Documentation</h2> <!-- $$$checkConnectArgs[overload1]$$$checkConnectArgsconstchar*constchar* --> <h3 class="fn"><a name="checkConnectArgs"></a><span class="type">bool</span> QMetaObject::<span class="name">checkConnectArgs</span> ( const <span class="type">char</span> * <i>signal</i>, const <span class="type">char</span> * <i>method</i> )<tt> [static]</tt></h3> <p>Returns true if the <i>signal</i> and <i>method</i> arguments are compatible; otherwise returns false.</p> <p>Both <i>signal</i> and <i>method</i> are expected to be normalized.</p> <p><b>See also </b><a href="qmetaobject.html#normalizedSignature">normalizedSignature</a>().</p> <!-- @@@checkConnectArgs --> <!-- $$$classInfo[overload1]$$$classInfoint --> <h3 class="fn"><a name="classInfo"></a><span class="type"><a href="qmetaclassinfo.html">QMetaClassInfo</a></span> QMetaObject::<span class="name">classInfo</span> ( <span class="type">int</span> <i>index</i> ) const</h3> <p>Returns the meta-data for the item of class information with the given <i>index</i>.</p> <p>Example:</p> <pre class="cpp"> <span class="keyword">class</span> MyClass : <span class="keyword">public</span> <span class="type"><a href="qobject.html">QObject</a></span> { Q_OBJECT Q_CLASSINFO(<span class="string">"author"</span><span class="operator">,</span> <span class="string">"Sabrina Schweinsteiger"</span>) Q_CLASSINFO(<span class="string">"url"</span><span class="operator">,</span> <span class="string">"http://doc.moosesoft.co.uk/1.0/"</span>) <span class="keyword">public</span>: <span class="operator">.</span><span class="operator">.</span><span class="operator">.</span> };</pre> <p><b>See also </b><a href="qmetaobject.html#classInfoCount">classInfoCount</a>(), <a href="qmetaobject.html#classInfoOffset">classInfoOffset</a>(), and <a href="qmetaobject.html#indexOfClassInfo">indexOfClassInfo</a>().</p> <!-- @@@classInfo --> <!-- $$$classInfoCount[overload1]$$$classInfoCount --> <h3 class="fn"><a name="classInfoCount"></a><span class="type">int</span> QMetaObject::<span class="name">classInfoCount</span> () const</h3> <p>Returns the number of items of class information in this class.</p> <p><b>See also </b><a href="qmetaobject.html#classInfo">classInfo</a>(), <a href="qmetaobject.html#classInfoOffset">classInfoOffset</a>(), and <a href="qmetaobject.html#indexOfClassInfo">indexOfClassInfo</a>().</p> <!-- @@@classInfoCount --> <!-- $$$classInfoOffset[overload1]$$$classInfoOffset --> <h3 class="fn"><a name="classInfoOffset"></a><span class="type">int</span> QMetaObject::<span class="name">classInfoOffset</span> () const</h3> <p>Returns the class information offset for this class; i.e. the index position of this class's first class information item.</p> <p>If the class has no superclasses with class information, the offset is 0; otherwise the offset is the sum of all the class information items in the class's superclasses.</p> <p><b>See also </b><a href="qmetaobject.html#classInfo">classInfo</a>(), <a href="qmetaobject.html#classInfoCount">classInfoCount</a>(), and <a href="qmetaobject.html#indexOfClassInfo">indexOfClassInfo</a>().</p> <!-- @@@classInfoOffset --> <!-- $$$className[overload1]$$$className --> <h3 class="fn"><a name="className"></a>const <span class="type">char</span> * QMetaObject::<span class="name">className</span> () const</h3> <p>Returns the class name.</p> <p><b>See also </b><a href="qmetaobject.html#superClass">superClass</a>().</p> <!-- @@@className --> <!-- $$$connectSlotsByName[overload1]$$$connectSlotsByNameQObject* --> <h3 class="fn"><a name="connectSlotsByName"></a><span class="type">void</span> QMetaObject::<span class="name">connectSlotsByName</span> ( <span class="type"><a href="qobject.html">QObject</a></span> * <i>object</i> )<tt> [static]</tt></h3> <p>Searches recursively for all child objects of the given <i>object</i>, and connects matching signals from them to slots of <i>object</i> that follow the following form:</p> <pre class="cpp"> <span class="type">void</span> on_<span class="operator"><</span>object name<span class="operator">></span>_<span class="operator"><</span>signal name<span class="operator">></span>(<span class="operator"><</span>signal parameters<span class="operator">></span>);</pre> <p>Let's assume our object has a child object of type <a href="qpushbutton.html">QPushButton</a> with the <a href="qobject.html#objectName-prop">object name</a> <tt>button1</tt>. The slot to catch the button's <tt>clicked()</tt> signal would be:</p> <pre class="cpp"> <span class="type">void</span> on_button1_clicked();</pre> <p><b>See also </b><a href="qobject.html#objectName-prop">QObject::setObjectName</a>().</p> <!-- @@@connectSlotsByName --> <!-- $$$constructor[overload1]$$$constructorint --> <h3 class="fn"><a name="constructor"></a><span class="type"><a href="qmetamethod.html">QMetaMethod</a></span> QMetaObject::<span class="name">constructor</span> ( <span class="type">int</span> <i>index</i> ) const</h3> <p>Returns the meta-data for the constructor with the given <i>index</i>.</p> <p>This function was introduced in Qt 4.5.</p> <p><b>See also </b><a href="qmetaobject.html#constructorCount">constructorCount</a>() and <a href="qmetaobject.html#newInstance">newInstance</a>().</p> <!-- @@@constructor --> <!-- $$$constructorCount[overload1]$$$constructorCount --> <h3 class="fn"><a name="constructorCount"></a><span class="type">int</span> QMetaObject::<span class="name">constructorCount</span> () const</h3> <p>Returns the number of constructors in this class.</p> <p>This function was introduced in Qt 4.5.</p> <p><b>See also </b><a href="qmetaobject.html#constructor">constructor</a>() and <a href="qmetaobject.html#indexOfConstructor">indexOfConstructor</a>().</p> <!-- @@@constructorCount --> <!-- $$$enumerator[overload1]$$$enumeratorint --> <h3 class="fn"><a name="enumerator"></a><span class="type"><a href="qmetaenum.html">QMetaEnum</a></span> QMetaObject::<span class="name">enumerator</span> ( <span class="type">int</span> <i>index</i> ) const</h3> <p>Returns the meta-data for the enumerator with the given <i>index</i>.</p> <p><b>See also </b><a href="qmetaobject.html#enumeratorCount">enumeratorCount</a>(), <a href="qmetaobject.html#enumeratorOffset">enumeratorOffset</a>(), and <a href="qmetaobject.html#indexOfEnumerator">indexOfEnumerator</a>().</p> <!-- @@@enumerator --> <!-- $$$enumeratorCount[overload1]$$$enumeratorCount --> <h3 class="fn"><a name="enumeratorCount"></a><span class="type">int</span> QMetaObject::<span class="name">enumeratorCount</span> () const</h3> <p>Returns the number of enumerators in this class.</p> <p><b>See also </b><a href="qmetaobject.html#enumerator">enumerator</a>(), <a href="qmetaobject.html#enumeratorOffset">enumeratorOffset</a>(), and <a href="qmetaobject.html#indexOfEnumerator">indexOfEnumerator</a>().</p> <!-- @@@enumeratorCount --> <!-- $$$enumeratorOffset[overload1]$$$enumeratorOffset --> <h3 class="fn"><a name="enumeratorOffset"></a><span class="type">int</span> QMetaObject::<span class="name">enumeratorOffset</span> () const</h3> <p>Returns the enumerator offset for this class; i.e. the index position of this class's first enumerator.</p> <p>If the class has no superclasses with enumerators, the offset is 0; otherwise the offset is the sum of all the enumerators in the class's superclasses.</p> <p><b>See also </b><a href="qmetaobject.html#enumerator">enumerator</a>(), <a href="qmetaobject.html#enumeratorCount">enumeratorCount</a>(), and <a href="qmetaobject.html#indexOfEnumerator">indexOfEnumerator</a>().</p> <!-- @@@enumeratorOffset --> <!-- $$$indexOfClassInfo[overload1]$$$indexOfClassInfoconstchar* --> <h3 class="fn"><a name="indexOfClassInfo"></a><span class="type">int</span> QMetaObject::<span class="name">indexOfClassInfo</span> ( const <span class="type">char</span> * <i>name</i> ) const</h3> <p>Finds class information item <i>name</i> and returns its index; otherwise returns -1.</p> <p><b>See also </b><a href="qmetaobject.html#classInfo">classInfo</a>(), <a href="qmetaobject.html#classInfoCount">classInfoCount</a>(), and <a href="qmetaobject.html#classInfoOffset">classInfoOffset</a>().</p> <!-- @@@indexOfClassInfo --> <!-- $$$indexOfConstructor[overload1]$$$indexOfConstructorconstchar* --> <h3 class="fn"><a name="indexOfConstructor"></a><span class="type">int</span> QMetaObject::<span class="name">indexOfConstructor</span> ( const <span class="type">char</span> * <i>constructor</i> ) const</h3> <p>Finds <i>constructor</i> and returns its index; otherwise returns -1.</p> <p>Note that the <i>constructor</i> has to be in normalized form, as returned by <a href="qmetaobject.html#normalizedSignature">normalizedSignature</a>().</p> <p>This function was introduced in Qt 4.5.</p> <p><b>See also </b><a href="qmetaobject.html#constructor">constructor</a>(), <a href="qmetaobject.html#constructorCount">constructorCount</a>(), and <a href="qmetaobject.html#normalizedSignature">normalizedSignature</a>().</p> <!-- @@@indexOfConstructor --> <!-- $$$indexOfEnumerator[overload1]$$$indexOfEnumeratorconstchar* --> <h3 class="fn"><a name="indexOfEnumerator"></a><span class="type">int</span> QMetaObject::<span class="name">indexOfEnumerator</span> ( const <span class="type">char</span> * <i>name</i> ) const</h3> <p>Finds enumerator <i>name</i> and returns its index; otherwise returns -1.</p> <p><b>See also </b><a href="qmetaobject.html#enumerator">enumerator</a>(), <a href="qmetaobject.html#enumeratorCount">enumeratorCount</a>(), and <a href="qmetaobject.html#enumeratorOffset">enumeratorOffset</a>().</p> <!-- @@@indexOfEnumerator --> <!-- $$$indexOfMethod[overload1]$$$indexOfMethodconstchar* --> <h3 class="fn"><a name="indexOfMethod"></a><span class="type">int</span> QMetaObject::<span class="name">indexOfMethod</span> ( const <span class="type">char</span> * <i>method</i> ) const</h3> <p>Finds <i>method</i> and returns its index; otherwise returns -1.</p> <p>Note that the <i>method</i> has to be in normalized form, as returned by <a href="qmetaobject.html#normalizedSignature">normalizedSignature</a>().</p> <p><b>See also </b><a href="qmetaobject.html#method">method</a>(), <a href="qmetaobject.html#methodCount">methodCount</a>(), <a href="qmetaobject.html#methodOffset">methodOffset</a>(), and <a href="qmetaobject.html#normalizedSignature">normalizedSignature</a>().</p> <!-- @@@indexOfMethod --> <!-- $$$indexOfProperty[overload1]$$$indexOfPropertyconstchar* --> <h3 class="fn"><a name="indexOfProperty"></a><span class="type">int</span> QMetaObject::<span class="name">indexOfProperty</span> ( const <span class="type">char</span> * <i>name</i> ) const</h3> <p>Finds property <i>name</i> and returns its index; otherwise returns -1.</p> <p><b>See also </b><a href="qmetaobject.html#property">property</a>(), <a href="qmetaobject.html#propertyCount">propertyCount</a>(), and <a href="qmetaobject.html#propertyOffset">propertyOffset</a>().</p> <!-- @@@indexOfProperty --> <!-- $$$indexOfSignal[overload1]$$$indexOfSignalconstchar* --> <h3 class="fn"><a name="indexOfSignal"></a><span class="type">int</span> QMetaObject::<span class="name">indexOfSignal</span> ( const <span class="type">char</span> * <i>signal</i> ) const</h3> <p>Finds <i>signal</i> and returns its index; otherwise returns -1.</p> <p>This is the same as <a href="qmetaobject.html#indexOfMethod">indexOfMethod</a>(), except that it will return -1 if the method exists but isn't a signal.</p> <p>Note that the <i>signal</i> has to be in normalized form, as returned by <a href="qmetaobject.html#normalizedSignature">normalizedSignature</a>().</p> <p><b>See also </b><a href="qmetaobject.html#indexOfMethod">indexOfMethod</a>(), <a href="qmetaobject.html#normalizedSignature">normalizedSignature</a>(), <a href="qmetaobject.html#method">method</a>(), <a href="qmetaobject.html#methodCount">methodCount</a>(), and <a href="qmetaobject.html#methodOffset">methodOffset</a>().</p> <!-- @@@indexOfSignal --> <!-- $$$indexOfSlot[overload1]$$$indexOfSlotconstchar* --> <h3 class="fn"><a name="indexOfSlot"></a><span class="type">int</span> QMetaObject::<span class="name">indexOfSlot</span> ( const <span class="type">char</span> * <i>slot</i> ) const</h3> <p>Finds <i>slot</i> and returns its index; otherwise returns -1.</p> <p>This is the same as <a href="qmetaobject.html#indexOfMethod">indexOfMethod</a>(), except that it will return -1 if the method exists but isn't a slot.</p> <p><b>See also </b><a href="qmetaobject.html#indexOfMethod">indexOfMethod</a>(), <a href="qmetaobject.html#method">method</a>(), <a href="qmetaobject.html#methodCount">methodCount</a>(), and <a href="qmetaobject.html#methodOffset">methodOffset</a>().</p> <!-- @@@indexOfSlot --> <!-- $$$invokeMethod[overload1]$$$invokeMethodQObject*constchar*Qt::ConnectionTypeQGenericReturnArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgument --> <h3 class="fn"><a name="invokeMethod"></a><span class="type">bool</span> QMetaObject::<span class="name">invokeMethod</span> ( <span class="type"><a href="qobject.html">QObject</a></span> * <i>obj</i>, const <span class="type">char</span> * <i>member</i>, <span class="type"><a href="qt.html#ConnectionType-enum">Qt::ConnectionType</a></span> <i>type</i>, <span class="type"><a href="qgenericreturnargument.html">QGenericReturnArgument</a></span> <i>ret</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() )<tt> [static]</tt></h3> <p>Invokes the <i>member</i> (a signal or a slot name) on the object <i>obj</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 <i>type</i>:</p> <ul> <li>If <i>type</i> is <a href="qt.html#ConnectionType-enum">Qt::DirectConnection</a>, the member will be invoked immediately.</li> <li>If <i>type</i> is <a href="qt.html#ConnectionType-enum">Qt::QueuedConnection</a>, a <a href="qevent.html">QEvent</a> will be sent and the member is invoked as soon as the application enters the main event loop.</li> <li>If <i>type</i> is <a href="qt.html#ConnectionType-enum">Qt::BlockingQueuedConnection</a>, the method will be invoked in the same way as for <a href="qt.html#ConnectionType-enum">Qt::QueuedConnection</a>, except that the current thread will block until the event is delivered. Using this connection type to communicate between objects in the same thread will lead to deadlocks.</li> <li>If <i>type</i> is <a href="qt.html#ConnectionType-enum">Qt::AutoConnection</a>, the member is invoked synchronously if <i>obj</i> lives in the same thread as the caller; otherwise it will invoke the member asynchronously.</li> </ul> <p>The return value of the <i>member</i> function call is placed in <i>ret</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 the <i>member</i> function.</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>You only need to pass the name of the signal or slot to this function, not the entire signature. For example, to asynchronously invoke the <a href="qabstractbutton.html#animateClick">animateClick()</a> slot on a <a href="qpushbutton.html">QPushButton</a>, use the following code:</p> <pre class="cpp"> <span class="type"><a href="qmetaobject.html">QMetaObject</a></span><span class="operator">::</span>invokeMethod(pushButton<span class="operator">,</span> <span class="string">"animateClick"</span><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="qmetaobject.html">QMetaObject</a></span><span class="operator">::</span>invokeMethod: 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 invokeMethod().</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="qmetaobject.html">QMetaObject</a></span><span class="operator">::</span>invokeMethod(obj<span class="operator">,</span> <span class="string">"compute"</span><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>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>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="qmetamethod.html#invoke">QMetaMethod::invoke</a>().</p> <!-- @@@invokeMethod --> <!-- $$$invokeMethod$$$invokeMethodQObject*constchar*QGenericReturnArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgument --> <h3 class="fn"><a name="invokeMethod-2"></a><span class="type">bool</span> QMetaObject::<span class="name">invokeMethod</span> ( <span class="type"><a href="qobject.html">QObject</a></span> * <i>obj</i>, const <span class="type">char</span> * <i>member</i>, <span class="type"><a href="qgenericreturnargument.html">QGenericReturnArgument</a></span> <i>ret</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() )<tt> [static]</tt></h3> <p>This function overloads <a href="qmetaobject.html#invokeMethod">invokeMethod</a>().</p> <p>This overload always invokes the member using the connection type <a href="qt.html#ConnectionType-enum">Qt::AutoConnection</a>.</p> <!-- @@@invokeMethod --> <!-- $$$invokeMethod$$$invokeMethodQObject*constchar*Qt::ConnectionTypeQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgument --> <h3 class="fn"><a name="invokeMethod-3"></a><span class="type">bool</span> QMetaObject::<span class="name">invokeMethod</span> ( <span class="type"><a href="qobject.html">QObject</a></span> * <i>obj</i>, const <span class="type">char</span> * <i>member</i>, <span class="type"><a href="qt.html#ConnectionType-enum">Qt::ConnectionType</a></span> <i>type</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() )<tt> [static]</tt></h3> <p>This function overloads <a href="qmetaobject.html#invokeMethod">invokeMethod</a>().</p> <p>This overload can be used if the return value of the member is of no interest.</p> <!-- @@@invokeMethod --> <!-- $$$invokeMethod$$$invokeMethodQObject*constchar*QGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgument --> <h3 class="fn"><a name="invokeMethod-4"></a><span class="type">bool</span> QMetaObject::<span class="name">invokeMethod</span> ( <span class="type"><a href="qobject.html">QObject</a></span> * <i>obj</i>, const <span class="type">char</span> * <i>member</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() )<tt> [static]</tt></h3> <p>This function overloads <a href="qmetaobject.html#invokeMethod">invokeMethod</a>().</p> <p>This overload invokes the member using the connection type <a href="qt.html#ConnectionType-enum">Qt::AutoConnection</a> and ignores return values.</p> <!-- @@@invokeMethod --> <!-- $$$method[overload1]$$$methodint --> <h3 class="fn"><a name="method"></a><span class="type"><a href="qmetamethod.html">QMetaMethod</a></span> QMetaObject::<span class="name">method</span> ( <span class="type">int</span> <i>index</i> ) const</h3> <p>Returns the meta-data for the method with the given <i>index</i>.</p> <p><b>See also </b><a href="qmetaobject.html#methodCount">methodCount</a>(), <a href="qmetaobject.html#methodOffset">methodOffset</a>(), and <a href="qmetaobject.html#indexOfMethod">indexOfMethod</a>().</p> <!-- @@@method --> <!-- $$$methodCount[overload1]$$$methodCount --> <h3 class="fn"><a name="methodCount"></a><span class="type">int</span> QMetaObject::<span class="name">methodCount</span> () const</h3> <p>Returns the number of methods known to the meta-object system in this class, including the number of properties provided by each base class. These include signals and slots as well as member functions declared with the <a href="qobject.html#Q_INVOKABLE">Q_INVOKABLE</a> macro.</p> <p>Use code like the following to obtain a <a href="qstringlist.html">QStringList</a> containing the methods specific to a given class:</p> <pre class="cpp"> <span class="keyword">const</span> <span class="type"><a href="qmetaobject.html">QMetaObject</a></span><span class="operator">*</span> metaObject <span class="operator">=</span> obj<span class="operator">-</span><span class="operator">></span>metaObject(); <span class="type"><a href="qstringlist.html">QStringList</a></span> methods; <span class="keyword">for</span>(<span class="type">int</span> i <span class="operator">=</span> metaObject<span class="operator">-</span><span class="operator">></span>methodOffset(); i <span class="operator"><</span> metaObject<span class="operator">-</span><span class="operator">></span>methodCount(); <span class="operator">+</span><span class="operator">+</span>i) methods <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qstring.html">QString</a></span><span class="operator">::</span>fromLatin1(metaObject<span class="operator">-</span><span class="operator">></span>method(i)<span class="operator">.</span>signature());</pre> <p><b>See also </b><a href="qmetaobject.html#method">method</a>(), <a href="qmetaobject.html#methodOffset">methodOffset</a>(), and <a href="qmetaobject.html#indexOfMethod">indexOfMethod</a>().</p> <!-- @@@methodCount --> <!-- $$$methodOffset[overload1]$$$methodOffset --> <h3 class="fn"><a name="methodOffset"></a><span class="type">int</span> QMetaObject::<span class="name">methodOffset</span> () const</h3> <p>Returns the method offset for this class; i.e. the index position of this class's first member function.</p> <p>The offset is the sum of all the methods in the class's superclasses (which is always positive since <a href="qobject.html">QObject</a> has the deleteLater() slot and a destroyed() signal).</p> <p><b>See also </b><a href="qmetaobject.html#method">method</a>(), <a href="qmetaobject.html#methodCount">methodCount</a>(), and <a href="qmetaobject.html#indexOfMethod">indexOfMethod</a>().</p> <!-- @@@methodOffset --> <!-- $$$newInstance[overload1]$$$newInstanceQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgumentQGenericArgument --> <h3 class="fn"><a name="newInstance"></a><span class="type"><a href="qobject.html">QObject</a></span> * QMetaObject::<span class="name">newInstance</span> ( <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>Constructs a new instance of this class. 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 the constructor. Returns the new object, or 0 if no suitable constructor is available.</p> <p>Note that only constructors that are declared with the <a href="qobject.html#Q_INVOKABLE">Q_INVOKABLE</a> modifier are made available through the meta-object system.</p> <p>This function was introduced in Qt 4.5.</p> <p><b>See also </b><a href="qmetaobject.html#Q_ARG">Q_ARG</a>() and <a href="qmetaobject.html#constructor">constructor</a>().</p> <!-- @@@newInstance --> <!-- $$$normalizedSignature[overload1]$$$normalizedSignatureconstchar* --> <h3 class="fn"><a name="normalizedSignature"></a><span class="type"><a href="qbytearray.html">QByteArray</a></span> QMetaObject::<span class="name">normalizedSignature</span> ( const <span class="type">char</span> * <i>method</i> )<tt> [static]</tt></h3> <p>Normalizes the signature of the given <i>method</i>.</p> <p>Qt uses normalized signatures to decide whether two given signals and slots are compatible. Normalization reduces whitespace to a minimum, moves 'const' to the front where appropriate, removes 'const' from value types and replaces const references with values.</p> <p><b>See also </b><a href="qmetaobject.html#checkConnectArgs">checkConnectArgs</a>() and <a href="qmetaobject.html#normalizedType">normalizedType</a>().</p> <!-- @@@normalizedSignature --> <!-- $$$normalizedType[overload1]$$$normalizedTypeconstchar* --> <h3 class="fn"><a name="normalizedType"></a><span class="type"><a href="qbytearray.html">QByteArray</a></span> QMetaObject::<span class="name">normalizedType</span> ( const <span class="type">char</span> * <i>type</i> )<tt> [static]</tt></h3> <p>Normalizes a <i>type</i>.</p> <p>See <a href="qmetaobject.html#normalizedSignature">QMetaObject::normalizedSignature</a>() for a description on how Qt normalizes.</p> <p>Example:</p> <pre class="cpp"> <span class="type"><a href="qbytearray.html">QByteArray</a></span> normType <span class="operator">=</span> <span class="type"><a href="qmetaobject.html">QMetaObject</a></span><span class="operator">::</span>normalizedType(<span class="string">" int const *"</span>); <span class="comment">// normType is now "const int*"</span></pre> <p>This function was introduced in Qt 4.2.</p> <p><b>See also </b><a href="qmetaobject.html#normalizedSignature">normalizedSignature</a>().</p> <!-- @@@normalizedType --> <!-- $$$property[overload1]$$$propertyint --> <h3 class="fn"><a name="property"></a><span class="type"><a href="qmetaproperty.html">QMetaProperty</a></span> QMetaObject::<span class="name">property</span> ( <span class="type">int</span> <i>index</i> ) const</h3> <p>Returns the meta-data for the property with the given <i>index</i>. If no such property exists, a null <a href="qmetaproperty.html">QMetaProperty</a> is returned.</p> <p><b>See also </b><a href="qmetaobject.html#propertyCount">propertyCount</a>(), <a href="qmetaobject.html#propertyOffset">propertyOffset</a>(), and <a href="qmetaobject.html#indexOfProperty">indexOfProperty</a>().</p> <!-- @@@property --> <!-- $$$propertyCount[overload1]$$$propertyCount --> <h3 class="fn"><a name="propertyCount"></a><span class="type">int</span> QMetaObject::<span class="name">propertyCount</span> () const</h3> <p>Returns the number of properties in this class, including the number of properties provided by each base class.</p> <p>Use code like the following to obtain a <a href="qstringlist.html">QStringList</a> containing the properties specific to a given class:</p> <pre class="cpp"> <span class="keyword">const</span> <span class="type"><a href="qmetaobject.html">QMetaObject</a></span><span class="operator">*</span> metaObject <span class="operator">=</span> obj<span class="operator">-</span><span class="operator">></span>metaObject(); <span class="type"><a href="qstringlist.html">QStringList</a></span> properties; <span class="keyword">for</span>(<span class="type">int</span> i <span class="operator">=</span> metaObject<span class="operator">-</span><span class="operator">></span>propertyOffset(); i <span class="operator"><</span> metaObject<span class="operator">-</span><span class="operator">></span>propertyCount(); <span class="operator">+</span><span class="operator">+</span>i) properties <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qstring.html">QString</a></span><span class="operator">::</span>fromLatin1(metaObject<span class="operator">-</span><span class="operator">></span>property(i)<span class="operator">.</span>name());</pre> <p><b>See also </b><a href="qmetaobject.html#property">property</a>(), <a href="qmetaobject.html#propertyOffset">propertyOffset</a>(), and <a href="qmetaobject.html#indexOfProperty">indexOfProperty</a>().</p> <!-- @@@propertyCount --> <!-- $$$propertyOffset[overload1]$$$propertyOffset --> <h3 class="fn"><a name="propertyOffset"></a><span class="type">int</span> QMetaObject::<span class="name">propertyOffset</span> () const</h3> <p>Returns the property offset for this class; i.e. the index position of this class's first property.</p> <p>The offset is the sum of all the properties in the class's superclasses (which is always positive since <a href="qobject.html">QObject</a> has the name() property).</p> <p><b>See also </b><a href="qmetaobject.html#property">property</a>(), <a href="qmetaobject.html#propertyCount">propertyCount</a>(), and <a href="qmetaobject.html#indexOfProperty">indexOfProperty</a>().</p> <!-- @@@propertyOffset --> <!-- $$$superClass[overload1]$$$superClass --> <h3 class="fn"><a name="superClass"></a>const <span class="type">QMetaObject</span> * QMetaObject::<span class="name">superClass</span> () const</h3> <p>Returns the meta-object of the superclass, or 0 if there is no such object.</p> <p><b>See also </b><a href="qmetaobject.html#className">className</a>().</p> <!-- @@@superClass --> <!-- $$$userProperty[overload1]$$$userProperty --> <h3 class="fn"><a name="userProperty"></a><span class="type"><a href="qmetaproperty.html">QMetaProperty</a></span> QMetaObject::<span class="name">userProperty</span> () const</h3> <p>Returns the property that has the <tt>USER</tt> flag set to true.</p> <p>This function was introduced in Qt 4.2.</p> <p><b>See also </b><a href="qmetaproperty.html#isUser">QMetaProperty::isUser</a>().</p> <!-- @@@userProperty --> </div> <div class="macros"> <h2>Macro Documentation</h2> <!-- $$$Q_ARG[overload1]$$$Q_ARGconstType& --> <h3 class="fn"><a name="Q_ARG"></a><span class="type"><a href="qgenericargument.html">QGenericArgument</a></span> <span class="name">Q_ARG</span> ( <i>Type</i>, const <span class="type">Type</span> & <i>value</i> )</h3> <p>This macro takes a <i>Type</i> and a <i>value</i> of that type and returns a <a href="qgenericargument.html">QGenericArgument</a> object that can be passed to <a href="qmetaobject.html#invokeMethod">QMetaObject::invokeMethod</a>().</p> <p><b>See also </b><a href="qmetaobject.html#Q_RETURN_ARG">Q_RETURN_ARG</a>().</p> <!-- @@@Q_ARG --> <!-- $$$Q_RETURN_ARG[overload1]$$$Q_RETURN_ARGType& --> <h3 class="fn"><a name="Q_RETURN_ARG"></a><span class="type"><a href="qgenericreturnargument.html">QGenericReturnArgument</a></span> <span class="name">Q_RETURN_ARG</span> ( <i>Type</i>, <span class="type">Type</span> & <i>value</i> )</h3> <p>This macro takes a <i>Type</i> and a non-const reference to a <i>value</i> of that type and returns a <a href="qgenericreturnargument.html">QGenericReturnArgument</a> object that can be passed to <a href="qmetaobject.html#invokeMethod">QMetaObject::invokeMethod</a>().</p> <p><b>See also </b><a href="qmetaobject.html#Q_ARG">Q_ARG</a>().</p> <!-- @@@Q_RETURN_ARG --> </div> </div> </div> </div> <div class="ft"> <span></span> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2015 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.</p> <br /> <p> 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.</p> <p> Documentation sources may be obtained from <a href="http://www.qt-project.org"> www.qt-project.org</a>.</p> <br /> <p> 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. <a title="Privacy Policy" href="http://en.gitorious.org/privacy_policy/">Privacy Policy</a></p> </div> <script src="scripts/functions.js" type="text/javascript"></script> </body> </html>