<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/kernel/qmetaobject.cpp:80 --> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>QMetaObject Class</title> <style type="text/css"><!-- fn { margin-left: 1cm; text-indent: -1cm; } a:link { color: #004faf; text-decoration: none } a:visited { color: #672967; text-decoration: none } body { background: #ffffff; color: black; } --></style> </head> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr bgcolor="#E5E5E5"> <td valign=center> <a href="index.html"> <font color="#004faf">Home</font></a> | <a href="classes.html"> <font color="#004faf">All Classes</font></a> | <a href="mainclasses.html"> <font color="#004faf">Main Classes</font></a> | <a href="annotated.html"> <font color="#004faf">Annotated</font></a> | <a href="groups.html"> <font color="#004faf">Grouped Classes</font></a> | <a href="functions.html"> <font color="#004faf">Functions</font></a> </td> <td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QMetaObject Class Reference</h1> <p>The QMetaObject class contains meta information about Qt objects. <a href="#details">More...</a> <p><tt>#include <<a href="qmetaobject-h.html">qmetaobject.h</a>></tt> <p><a href="qmetaobject-members.html">List of all member functions.</a> <h2>Public Members</h2> <ul> <li class=fn>const char * <a href="#className"><b>className</b></a> () const</li> <li class=fn>const char * <a href="#superClassName"><b>superClassName</b></a> () const</li> <li class=fn>QMetaObject * <a href="#superClass"><b>superClass</b></a> () const</li> <li class=fn>bool <a href="#inherits"><b>inherits</b></a> ( const char * clname ) const</li> <li class=fn>int <a href="#numSlots"><b>numSlots</b></a> ( bool super = FALSE ) const</li> <li class=fn>int <a href="#numSignals"><b>numSignals</b></a> ( bool super = FALSE ) const</li> <li class=fn>QStrList <a href="#slotNames"><b>slotNames</b></a> ( bool super = FALSE ) const</li> <li class=fn>QStrList <a href="#signalNames"><b>signalNames</b></a> ( bool super = FALSE ) const</li> <li class=fn>int <a href="#numClassInfo"><b>numClassInfo</b></a> ( bool super = FALSE ) const</li> <li class=fn>const QClassInfo * <a href="#classInfo"><b>classInfo</b></a> ( int index, bool super = FALSE ) const</li> <li class=fn>const char * <a href="#classInfo-2"><b>classInfo</b></a> ( const char * name, bool super = FALSE ) const</li> <li class=fn>const QMetaProperty * <a href="#property"><b>property</b></a> ( int index, bool super = FALSE ) const</li> <li class=fn>int <a href="#findProperty"><b>findProperty</b></a> ( const char * name, bool super = FALSE ) const</li> <li class=fn>QStrList <a href="#propertyNames"><b>propertyNames</b></a> ( bool super = FALSE ) const</li> <li class=fn>int <a href="#numProperties"><b>numProperties</b></a> ( bool super = FALSE ) const</li> </ul> <hr><a name="details"></a><h2>Detailed Description</h2> The QMetaObject class contains meta information about Qt objects. <p> <p> The Meta Object System in Qt is responsible for the signals and slots inter-object communication mechanism, runtime type information and the property system. All meta information in Qt is kept in a single instance of QMetaObject per class. <p> This class is not normally required for application programming. But if you write meta applications, such as scripting engines or GUI builders, you might find these functions useful: <ul> <li> <a href="#className">className</a>() to get the name of a class. <li> <a href="#superClassName">superClassName</a>() to get the name of the superclass. <li> <a href="#inherits">inherits</a>(), the function called by <a href="qobject.html#inherits">QObject::inherits</a>(). <li> <a href="#superClass">superClass</a>() to access the superclass's <a href="metaobjects.html#meta-object">meta object</a>. <li> <a href="#numSlots">numSlots</a>(), <a href="#numSignals">numSignals</a>(), <a href="#slotNames">slotNames</a>(), and <a href="#signalNames">signalNames</a>() to get information about a class's signals and slots. <li> <a href="#property">property</a>() and <a href="#propertyNames">propertyNames</a>() to obtain information about a class's properties. </ul> <p> Classes may have a list of name-value pairs of class information. The number of pairs is returned by <a href="#numClassInfo">numClassInfo</a>(), and values are returned by <a href="#classInfo">classInfo</a>(). <p> <p>See also <a href="moc.html">moc (Meta Object Compiler)</a> and <a href="objectmodel.html">Object Model</a>. <p> <hr><h2>Member Function Documentation</h2> <h3 class=fn>const QClassInfo * <a name="classInfo"></a>QMetaObject::classInfo ( int index, bool super = FALSE ) const </h3> Returns the class information with index <em>index</em> or 0 if no such information exists. <p> If <em>super</em> is TRUE, inherited class information is included. <h3 class=fn>const char * <a name="classInfo-2"></a>QMetaObject::classInfo ( const char * name, bool super = FALSE ) const </h3> This is an overloaded member function, provided for convenience. It behaves essentially like the above function. <p> Returns the class information with name <em>name</em> or 0 if no such information exists. <p> If <em>super</em> is TRUE, inherited class information is included. <h3 class=fn>const char * <a name="className"></a>QMetaObject::className () const </h3> <p> Returns the class name. <p> <p>See also <a href="qobject.html#className">QObject::className</a>() and <a href="#superClassName">superClassName</a>(). <h3 class=fn>int <a name="findProperty"></a>QMetaObject::findProperty ( const char * name, bool super = FALSE ) const </h3> Returns the index for the property with name <em>name</em> or -1 if no such property exists. <p> If <em>super</em> is TRUE, inherited properties are included. <p> <p>See also <a href="#property">property</a>() and <a href="#propertyNames">propertyNames</a>(). <h3 class=fn>bool <a name="inherits"></a>QMetaObject::inherits ( const char * clname ) const </h3> Returns TRUE if this class inherits <em>clname</em> within the <a href="metaobjects.html#meta-object">meta object</a> inheritance chain; otherwise returns FALSE. <p> (A class is considered to inherit itself.) <h3 class=fn>int <a name="numClassInfo"></a>QMetaObject::numClassInfo ( bool super = FALSE ) const </h3> Returns the number of items of class information available for this class. <p> If <em>super</em> is TRUE, inherited class information is included. <h3 class=fn>int <a name="numProperties"></a>QMetaObject::numProperties ( bool super = FALSE ) const </h3> Returns the number of properties for this class. <p> If <em>super</em> is TRUE, inherited properties are included. <p> <p>See also <a href="#propertyNames">propertyNames</a>(). <h3 class=fn>int <a name="numSignals"></a>QMetaObject::numSignals ( bool super = FALSE ) const </h3> Returns the number of signals for this class. <p> If <em>super</em> is TRUE, inherited signals are included. <p> <p>See also <a href="#signalNames">signalNames</a>(). <h3 class=fn>int <a name="numSlots"></a>QMetaObject::numSlots ( bool super = FALSE ) const </h3> Returns the number of slots for this class. <p> If <em>super</em> is TRUE, inherited slots are included. <p> <p>See also <a href="#slotNames">slotNames</a>(). <h3 class=fn>const <a href="qmetaproperty.html">QMetaProperty</a> * <a name="property"></a>QMetaObject::property ( int index, bool super = FALSE ) const </h3> Returns the property meta data for the property at index <em>index</em> or 0 if no such property exists. <p> If <em>super</em> is TRUE, inherited properties are included. <p> <p>See also <a href="#propertyNames">propertyNames</a>(). <h3 class=fn><a href="qstrlist.html">QStrList</a> <a name="propertyNames"></a>QMetaObject::propertyNames ( bool super = FALSE ) const </h3> Returns a list with the names of all this class's properties. <p> If <em>super</em> is TRUE, inherited properties are included. <p> <p>See also <a href="#property">property</a>(). <h3 class=fn><a href="qstrlist.html">QStrList</a> <a name="signalNames"></a>QMetaObject::signalNames ( bool super = FALSE ) const </h3> Returns a list with the names of all this class's signals. <p> If <em>super</em> is TRUE, inherited signals are included. <h3 class=fn><a href="qstrlist.html">QStrList</a> <a name="slotNames"></a>QMetaObject::slotNames ( bool super = FALSE ) const </h3> Returns a list with the names of all this class's slots. <p> If <em>super</em> is TRUE, inherited slots are included. <p> <p>See also <a href="#numSlots">numSlots</a>(). <h3 class=fn><a href="qmetaobject.html">QMetaObject</a> * <a name="superClass"></a>QMetaObject::superClass () const </h3> <p> Returns the <a href="metaobjects.html#meta-object">meta object</a> of the super class or 0 if there is no such object. <h3 class=fn>const char * <a name="superClassName"></a>QMetaObject::superClassName () const </h3> <p> Returns the class name of the superclass or 0 if there is no superclass in the <a href="qobject.html">QObject</a> hierachy. <p> <p>See also <a href="#className">className</a>(). <!-- eof --> <hr><p> This file is part of the <a href="index.html">Qt toolkit</a>. 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