<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <title>Wt: Wt::Signal< A1, A2, A3, A4, A5, A6 > Class Template Reference</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <link href="doxygen.css" rel="stylesheet" type="text/css" /> <link href="search/search.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="search/search.js"></script> <script type="text/javascript"> $(document).ready(function() { searchBox.OnSelectItem(0); }); </script> </head> <body> <div id="top"><!-- do not remove this div! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td style="padding-left: 0.5em;"> <div id="projectname">Wt  <span id="projectnumber">3.2.3</span> </div> </td> 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href="group__signalslot.html">Signal/slot system</a></div></div> </div> </div> <div class="contents"> <!-- doxytag: class="Wt::Signal" --><!-- doxytag: inherits="Wt::SignalBase" --> <p>A signal that propagates events to listeners. <a href="classWt_1_1Signal.html#details">More...</a></p> <p><code>#include <Wt/WSignal></code></p> <div class="dynheader"> Inheritance diagram for Wt::Signal< A1, A2, A3, A4, A5, A6 >:</div> <div class="dyncontent"> <div class="center"><img src="classWt_1_1Signal__inherit__graph.png" border="0" usemap="#Wt_1_1Signal_3_01A1_00_01A2_00_01A3_00_01A4_00_01A5_00_01A6_01_4_inherit__map" alt="Inheritance graph"/></div> <map name="Wt_1_1Signal_3_01A1_00_01A2_00_01A3_00_01A4_00_01A5_00_01A6_01_4_inherit__map" id="Wt_1_1Signal_3_01A1_00_01A2_00_01A3_00_01A4_00_01A5_00_01A6_01_4_inherit__map"> <area shape="rect" href="classWt_1_1SignalBase.html" title="Abstract base class of a signal." alt="" coords="71,5,183,32"/></map> <center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div> <p><a href="classWt_1_1Signal-members.html">List of all members.</a></p> <table class="memberdecls"> <tr><td colspan="2"><h2><a name="pub-methods"></a> Public Member Functions</h2></td></tr> <tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#aa481062b581f9d2f071bf07b421d87ca">Signal</a> (<a class="el" href="classWt_1_1WObject.html">WObject</a> *sender=0)</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a signal. <a href="#aa481062b581f9d2f071bf07b421d87ca"></a><br/></td></tr> <tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ae665a336ae3e576bcb372f16c306d4d1"></a><!-- doxytag: member="Wt::Signal::~Signal" ref="ae665a336ae3e576bcb372f16c306d4d1" args="()" -->  </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#ae665a336ae3e576bcb372f16c306d4d1">~Signal</a> ()</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <br/></td></tr> <tr><td class="memItemLeft" align="right" valign="top">virtual boost::signals::connection </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#a15d1150af031537b492674ee651bf4a3">connect</a> (<a class="el" href="classWt_1_1WObject.html">WObject</a> *target, <a class="el" href="classWt_1_1WObject.html#a6ef714d6ef0060b78c039e729b913aa9">WObject::Method</a> method)</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Connects to a slot. <a href="#a15d1150af031537b492674ee651bf4a3"></a><br/></td></tr> <tr><td class="memTemplParams" colspan="2">template<class F > </td></tr> <tr><td class="memTemplItemLeft" align="right" valign="top">boost::signals::connection </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#a43ead2fe014ed8440f7c0bc5bcb29dae">connect</a> (const F &function)</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Connects to a function. <a href="#a43ead2fe014ed8440f7c0bc5bcb29dae"></a><br/></td></tr> <tr><td class="memTemplParams" colspan="2">template<class T , class V > </td></tr> <tr><td class="memTemplItemLeft" align="right" valign="top">boost::signals::connection </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#a46cb10dfd101afe7348601ebf447c4a8">connect</a> (T *target, void(V::*method)())</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Connects a slot that takes no arguments. <a href="#a46cb10dfd101afe7348601ebf447c4a8"></a><br/></td></tr> <tr><td class="memTemplParams" colspan="2">template<class T , class V > </td></tr> <tr><td class="memTemplItemLeft" align="right" valign="top">boost::signals::connection </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#ad45227d4f4d12f82d31c6645a2a96c73">connect</a> (T *target, void(V::*method)(A1))</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Connects a slot that takes one argument. <a href="#ad45227d4f4d12f82d31c6645a2a96c73"></a><br/></td></tr> <tr><td class="memTemplParams" colspan="2">template<class T , class V > </td></tr> <tr><td class="memTemplItemLeft" align="right" valign="top">boost::signals::connection </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#a04fc7780957c0f2f8cb069827c762e1b">connect</a> (T *target, void(V::*method)(A1, A2))</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Connects a slot that takes two arguments. <a href="#a04fc7780957c0f2f8cb069827c762e1b"></a><br/></td></tr> <tr><td class="memTemplParams" colspan="2">template<class T , class V > </td></tr> <tr><td class="memTemplItemLeft" align="right" valign="top">boost::signals::connection </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#a55dc3c06b300a23894d6b1144607355b">connect</a> (T *target, void(V::*method)(A1, A2, A3))</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Connects a slot that takes three arguments. <a href="#a55dc3c06b300a23894d6b1144607355b"></a><br/></td></tr> <tr><td class="memTemplParams" colspan="2">template<class T , class V > </td></tr> <tr><td class="memTemplItemLeft" align="right" valign="top">boost::signals::connection </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#a660092c952ff06430f59dc1d08107312">connect</a> (T *target, void(V::*method)(A1, A2, A3, A4))</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Connects a slot that takes four arguments. <a href="#a660092c952ff06430f59dc1d08107312"></a><br/></td></tr> <tr><td class="memTemplParams" colspan="2">template<class T , class V > </td></tr> <tr><td class="memTemplItemLeft" align="right" valign="top">boost::signals::connection </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#a9e21c152582ceafa80715f8f56b2b199">connect</a> (T *target, void(V::*method)(A1, A2, A3, A4, A5))</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Connects a slot that takes five arguments. <a href="#a9e21c152582ceafa80715f8f56b2b199"></a><br/></td></tr> <tr><td class="memTemplParams" colspan="2">template<class T , class V > </td></tr> <tr><td class="memTemplItemLeft" align="right" valign="top">boost::signals::connection </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#a6919b6294bab484324cb16e17c1ae6eb">connect</a> (T *target, void(V::*method)(A1, A2, A3, A4, A5, A6))</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Connects a slot that takes six arguments. <a href="#a6919b6294bab484324cb16e17c1ae6eb"></a><br/></td></tr> <tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#a8d9cf8a1e83634462fe2b492b3beb1c5">emit</a> (A1 a1=NoClass::none, A2 a2=NoClass::none, A3 a3=NoClass::none, A4 a4=NoClass::none, A5 a5=NoClass::none, A6 a6=NoClass::none) const </td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Emits the signal. <a href="#a8d9cf8a1e83634462fe2b492b3beb1c5"></a><br/></td></tr> <tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#a10c70ce5cafb6170e56e8df36bbb9a7a">operator()</a> (A1 a1=NoClass::none, A2 a2=NoClass::none, A3 a3=NoClass::none, A4 a4=NoClass::none, A5 a5=NoClass::none, A6 a6=NoClass::none) const </td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Emits the signal. <a href="#a10c70ce5cafb6170e56e8df36bbb9a7a"></a><br/></td></tr> <tr><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#a4a65919846e7d1cedabd0e9acc65563a">isConnected</a> () const </td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Returns whether this signal is connected. <a href="#a4a65919846e7d1cedabd0e9acc65563a"></a><br/></td></tr> </table> <hr/><a name="details" id="details"></a><h2>Detailed Description</h2> <div class="textblock"><h3>template<typename A1 = NoClass, typename A2 = NoClass, typename A3 = NoClass, typename A4 = NoClass, typename A5 = NoClass, typename A6 = NoClass><br/> class Wt::Signal< A1, A2, A3, A4, A5, A6 ></h3> <p>A signal that propagates events to listeners. </p> <p>Use Signal/slots to let one object (<em>A</em>) listen to events caused by another object (<em>B</em>). In this scenario, object <em>B</em> provides in its public interface access to a signal, to which object <em>A</em> connects one of its member function (which act as slot). Object <em>A</em> can then signal an event (which triggers the connected callback functions), by emitting the signal. Signal/slot is a generalization of the popular observer pattern used in GUIs.</p> <p>A signal can provide details of the event, using up to 6 parameters. A slot must have a compatible signature to connect to a signal, based on its parameters. A compatible signature provides the same parameters in the member function, or less (leaving out parameters at the end).</p> <p>The signal automatically disconnects from the slot when the target is deleted. In addition, the signal may be deleted at any time, in particular also while it is being emitted.</p> <p>The Signal objects integrate with <a class="el" href="classWt_1_1WObject.html" title="A base class for objects that participate in the signal/slot system.">WObject</a> objects. A Signal requires that the target of a connection, i.e. the object that listens for an event, is a WObject. In addition, every signal may specify one WObject to be the owner of the signal, and a target may find out the sender of a signal emission, using <a class="el" href="classWt_1_1WObject.html#a413deb54de40ee278dd554e4960d58ca" title="Returns the sender of the current slot call.">WObject::sender()</a>.</p> <div class="fragment"><pre class="fragment"> <span class="keyword">class </span>MyWidget : <span class="keyword">public</span> Wt::WContainerWidget { <span class="keyword">public</span>: MyWidget(<a class="code" href="classWt_1_1WContainerWidget.html" title="A widget that holds and manages child widgets.">Wt::WContainerWidget</a> *parent = 0) : Wt::WContainerWidget(parent), done_(this) { ... <a class="code" href="classWt_1_1WPushButton.html" title="A widget that represents a push button.">Wt::WPushButton</a> *button = <span class="keyword">new</span> <a class="code" href="classWt_1_1WPushButton.html" title="A widget that represents a push button.">Wt::WPushButton</a>(<span class="stringliteral">"Okay"</span>); button-><a class="code" href="classWt_1_1WInteractWidget.html#ae11e050cce0d4a8f742afa3ef92bfe8c" title="Event signal emitted when a mouse key was clicked on this widget.">clicked</a>().connect(<span class="keyword">this</span>, &MyWidget::process); } <span class="comment">// provide an accessor for the signal</span> <a class="code" href="classWt_1_1Signal.html" title="A signal that propagates events to listeners.">Wt::Signal<int, std::string></a>& done() { <span class="keywordflow">return</span> done_; } <span class="keyword">private</span>: <a class="code" href="classWt_1_1Signal.html" title="A signal that propagates events to listeners.">Wt::Signal<int, std::string></a> done_; <span class="keywordtype">void</span> process() { ... done_.<a class="code" href="classWt_1_1Signal.html#a8d9cf8a1e83634462fe2b492b3beb1c5" title="Emits the signal.">emit</a>(42, <span class="stringliteral">"Totally done"</span>); <span class="comment">// emit the signal</span> } }; </pre></div><p>This widget could then be used from another class: </p> <div class="fragment"><pre class="fragment"> <span class="keyword">class </span>GUIClass : <span class="keyword">public</span> Wt::WContainerWidget { ... <span class="keyword">private</span>: <span class="keywordtype">void</span> init() { MyWidget *widget = <span class="keyword">new</span> MyWidget(<span class="keyword">this</span>); widget->done().connect(<span class="keyword">this</span>, &GUIClass::whenDone); } <span class="keywordtype">void</span> whenDone(<span class="keywordtype">int</span> result, <span class="keyword">const</span> std::string& description) { ... } }; </pre></div><p>The <a class="el" href="classWt_1_1WSignalMapper.html" title="A utility class to connect multiple senders to a single slot.">WSignalMapper</a> is a utility class that helps in situations where you want to connect multiple signals to a single slot, and still be identify the sender using some property.</p> <dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WSignalMapper.html" title="A utility class to connect multiple senders to a single slot.">WSignalMapper</a> </dd></dl> </div><hr/><h2>Constructor & Destructor Documentation</h2> <a class="anchor" id="aa481062b581f9d2f071bf07b421d87ca"></a><!-- doxytag: member="Wt::Signal::Signal" ref="aa481062b581f9d2f071bf07b421d87ca" args="(WObject *sender=0)" --> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 > </div> <table class="memname"> <tr> <td class="memname"><a class="el" href="classWt_1_1Signal.html">Wt::Signal</a>< A1, A2, A3, A4, A5, A6 >::<a class="el" href="classWt_1_1Signal.html">Signal</a> </td> <td>(</td> <td class="paramtype"><a class="el" href="classWt_1_1WObject.html">WObject</a> * </td> <td class="paramname"><em>sender</em> = <code>0</code></td><td>)</td> <td></td> </tr> </table> </div> <div class="memdoc"> <p>Creates a signal. </p> <p>The <code>sender</code> is the object that will be identified as <a class="el" href="classWt_1_1WObject.html#a413deb54de40ee278dd554e4960d58ca" title="Returns the sender of the current slot call.">WObject::sender()</a> when executing connected slots may be passed as an argument.</p> <p>The <code>sender</code> should not be <code>0</code> when you want to map the signal using the <a class="el" href="classWt_1_1WSignalMapper.html" title="A utility class to connect multiple senders to a single slot.">WSignalMapper</a>. </p> </div> </div> <hr/><h2>Member Function Documentation</h2> <a class="anchor" id="a15d1150af031537b492674ee651bf4a3"></a><!-- doxytag: member="Wt::Signal::connect" ref="a15d1150af031537b492674ee651bf4a3" args="(WObject *target, WObject::Method method)" --> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 > </div> <table class="memname"> <tr> <td class="memname">boost::signals::connection <a class="el" href="classWt_1_1Signal.html">Wt::Signal</a>< A1, A2, A3, A4, A5, A6 >::connect </td> <td>(</td> <td class="paramtype"><a class="el" href="classWt_1_1WObject.html">WObject</a> * </td> <td class="paramname"><em>target</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="classWt_1_1WObject.html#a6ef714d6ef0060b78c039e729b913aa9">WObject::Method</a> </td> <td class="paramname"><em>method</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td><code> [virtual]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Connects to a slot. </p> <p>Every signal can be connected to a slot which does not take any arguments (and may thus ignore signal arguments). </p> <p>Implements <a class="el" href="classWt_1_1SignalBase.html#a5161bdd49ba2dee3ddfa085c51e68bdb">Wt::SignalBase</a>.</p> </div> </div> <a class="anchor" id="a43ead2fe014ed8440f7c0bc5bcb29dae"></a><!-- doxytag: member="Wt::Signal::connect" ref="a43ead2fe014ed8440f7c0bc5bcb29dae" args="(const F &function)" --> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 > </div> <div class="memtemplate"> template<class F > </div> <table class="memname"> <tr> <td class="memname">boost::signals::connection <a class="el" href="classWt_1_1Signal.html">Wt::Signal</a>< A1, A2, A3, A4, A5, A6 >::connect </td> <td>(</td> <td class="paramtype">const F & </td> <td class="paramname"><em>function</em></td><td>)</td> <td></td> </tr> </table> </div> <div class="memdoc"> <p>Connects to a function. </p> <p>This variant of the overloaded <a class="el" href="classWt_1_1Signal.html#a15d1150af031537b492674ee651bf4a3" title="Connects to a slot.">connect()</a> method supports a template function object (which supports operator ()).</p> <p>When the receiver function is an object method, the signal will automatically be disconnected when the object is deleted, as long as the object inherits from <a class="el" href="classWt_1_1WObject.html" title="A base class for objects that participate in the signal/slot system.">WObject</a> or boost::signals::trackable.</p> <p>The function may leave up to <em>N</em> parameters unbound (e.g. using boost::bind placeholders _1 to _N) that may be bound to values passed by the signal. </p> </div> </div> <a class="anchor" id="a46cb10dfd101afe7348601ebf447c4a8"></a><!-- doxytag: member="Wt::Signal::connect" ref="a46cb10dfd101afe7348601ebf447c4a8" args="(T *target, void(V::*method)())" --> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 > </div> <div class="memtemplate"> template<class T , class V > </div> <table class="memname"> <tr> <td class="memname">boost::signals::connection <a class="el" href="classWt_1_1Signal.html">Wt::Signal</a>< A1, A2, A3, A4, A5, A6 >::connect </td> <td>(</td> <td class="paramtype">T * </td> <td class="paramname"><em>target</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">void(V::*)() </td> <td class="paramname"><em>method</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div> <div class="memdoc"> <p>Connects a slot that takes no arguments. </p> <p>This is always possible (even when the signal specifies a number of arguments).</p> <p>The slot is as a <code>method</code> of an object <code>target</code> of class <code>T</code>, which equals class <code>V</code>, or is a base class of class <code>V</code>. Thus, the following statement must return a non-null pointer:</p> <div class="fragment"><pre class="fragment"> V *v = <span class="keyword">dynamic_cast<</span>V *<span class="keyword">></span>(target); </pre></div><p>In practice, to facilitate automatic disconnects on deletion of the <code>target</code>, class <code>T</code> must be also be a descendant of <a class="el" href="classWt_1_1WObject.html" title="A base class for objects that participate in the signal/slot system.">WObject</a>, but this is not enforced by the interface. </p> <p>Reimplemented from <a class="el" href="classWt_1_1SignalBase.html#ae86c2d643c87d680390577882e7ee4ad">Wt::SignalBase</a>.</p> </div> </div> <a class="anchor" id="ad45227d4f4d12f82d31c6645a2a96c73"></a><!-- doxytag: member="Wt::Signal::connect" ref="ad45227d4f4d12f82d31c6645a2a96c73" args="(T *target, void(V::*method)(A1))" --> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename A1, typename A2 , typename A3 , typename A4 , typename A5 , typename A6 > </div> <div class="memtemplate"> template<class T , class V > </div> <table class="memname"> <tr> <td class="memname">boost::signals::connection <a class="el" href="classWt_1_1Signal.html">Wt::Signal</a>< A1, A2, A3, A4, A5, A6 >::connect </td> <td>(</td> <td class="paramtype">T * </td> <td class="paramname"><em>target</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">void(V::*)(A1) </td> <td class="paramname"><em>method</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div> <div class="memdoc"> <p>Connects a slot that takes one argument. </p> <p>This is only possible for signals that take at least one argument.</p> <dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1Signal.html#a15d1150af031537b492674ee651bf4a3" title="Connects to a slot.">connect</a>(T *target, void (V::*method)()) </dd></dl> </div> </div> <a class="anchor" id="a04fc7780957c0f2f8cb069827c762e1b"></a><!-- doxytag: member="Wt::Signal::connect" ref="a04fc7780957c0f2f8cb069827c762e1b" args="(T *target, void(V::*method)(A1, A2))" --> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename A1, typename A2, typename A3 , typename A4 , typename A5 , typename A6 > </div> <div class="memtemplate"> template<class T , class V > </div> <table class="memname"> <tr> <td class="memname">boost::signals::connection <a class="el" href="classWt_1_1Signal.html">Wt::Signal</a>< A1, A2, A3, A4, A5, A6 >::connect </td> <td>(</td> <td class="paramtype">T * </td> <td class="paramname"><em>target</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">void(V::*)(A1, A2) </td> <td class="paramname"><em>method</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div> <div class="memdoc"> <p>Connects a slot that takes two arguments. </p> <p>This is only possible for signals that take at least two arguments.</p> <dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1Signal.html#a15d1150af031537b492674ee651bf4a3" title="Connects to a slot.">connect</a>(T *target, void (V::*method)()) </dd></dl> </div> </div> <a class="anchor" id="a55dc3c06b300a23894d6b1144607355b"></a><!-- doxytag: member="Wt::Signal::connect" ref="a55dc3c06b300a23894d6b1144607355b" args="(T *target, void(V::*method)(A1, A2, A3))" --> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename A1, typename A2, typename A3, typename A4 , typename A5 , typename A6 > </div> <div class="memtemplate"> template<class T , class V > </div> <table class="memname"> <tr> <td class="memname">boost::signals::connection <a class="el" href="classWt_1_1Signal.html">Wt::Signal</a>< A1, A2, A3, A4, A5, A6 >::connect </td> <td>(</td> <td class="paramtype">T * </td> <td class="paramname"><em>target</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">void(V::*)(A1, A2, A3) </td> <td class="paramname"><em>method</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div> <div class="memdoc"> <p>Connects a slot that takes three arguments. </p> <p>This is only possible for signals that take at least three arguments.</p> <dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1Signal.html#a15d1150af031537b492674ee651bf4a3" title="Connects to a slot.">connect</a>(T *target, void (V::*method)()) </dd></dl> </div> </div> <a class="anchor" id="a660092c952ff06430f59dc1d08107312"></a><!-- doxytag: member="Wt::Signal::connect" ref="a660092c952ff06430f59dc1d08107312" args="(T *target, void(V::*method)(A1, A2, A3, A4))" --> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename A1, typename A2, typename A3, typename A4, typename A5 , typename A6 > </div> <div class="memtemplate"> template<class T , class V > </div> <table class="memname"> <tr> <td class="memname">boost::signals::connection <a class="el" href="classWt_1_1Signal.html">Wt::Signal</a>< A1, A2, A3, A4, A5, A6 >::connect </td> <td>(</td> <td class="paramtype">T * </td> <td class="paramname"><em>target</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">void(V::*)(A1, A2, A3, A4) </td> <td class="paramname"><em>method</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div> <div class="memdoc"> <p>Connects a slot that takes four arguments. </p> <p>This is only possible for signals that take at least four arguments.</p> <dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1Signal.html#a15d1150af031537b492674ee651bf4a3" title="Connects to a slot.">connect</a>(T *target, void (V::*method)()) </dd></dl> </div> </div> <a class="anchor" id="a9e21c152582ceafa80715f8f56b2b199"></a><!-- doxytag: member="Wt::Signal::connect" ref="a9e21c152582ceafa80715f8f56b2b199" args="(T *target, void(V::*method)(A1, A2, A3, A4, A5))" --> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename A1, typename A2, typename A3, typename A4, typename A5, typename A6 > </div> <div class="memtemplate"> template<class T , class V > </div> <table class="memname"> <tr> <td class="memname">boost::signals::connection <a class="el" href="classWt_1_1Signal.html">Wt::Signal</a>< A1, A2, A3, A4, A5, A6 >::connect </td> <td>(</td> <td class="paramtype">T * </td> <td class="paramname"><em>target</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">void(V::*)(A1, A2, A3, A4, A5) </td> <td class="paramname"><em>method</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div> <div class="memdoc"> <p>Connects a slot that takes five arguments. </p> <p>This is only possible for signals that take at least five arguments.</p> <dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1Signal.html#a15d1150af031537b492674ee651bf4a3" title="Connects to a slot.">connect</a>(T *target, void (V::*method)()) </dd></dl> </div> </div> <a class="anchor" id="a6919b6294bab484324cb16e17c1ae6eb"></a><!-- doxytag: member="Wt::Signal::connect" ref="a6919b6294bab484324cb16e17c1ae6eb" args="(T *target, void(V::*method)(A1, A2, A3, A4, A5, A6))" --> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename A1, typename A2, typename A3, typename A4, typename A5, typename A6> </div> <div class="memtemplate"> template<class T , class V > </div> <table class="memname"> <tr> <td class="memname">boost::signals::connection <a class="el" href="classWt_1_1Signal.html">Wt::Signal</a>< A1, A2, A3, A4, A5, A6 >::connect </td> <td>(</td> <td class="paramtype">T * </td> <td class="paramname"><em>target</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">void(V::*)(A1, A2, A3, A4, A5, A6) </td> <td class="paramname"><em>method</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div> <div class="memdoc"> <p>Connects a slot that takes six arguments. </p> <p>This is only possible for signals that take at least six arguments.</p> <dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1Signal.html#a15d1150af031537b492674ee651bf4a3" title="Connects to a slot.">connect</a>(T *target, void (V::*method)()) </dd></dl> </div> </div> <a class="anchor" id="a8d9cf8a1e83634462fe2b492b3beb1c5"></a><!-- doxytag: member="Wt::Signal::emit" ref="a8d9cf8a1e83634462fe2b492b3beb1c5" args="(A1 a1=NoClass::none, A2 a2=NoClass::none, A3 a3=NoClass::none, A4 a4=NoClass::none, A5 a5=NoClass::none, A6 a6=NoClass::none) const " --> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename A1, typename A2, typename A3, typename A4, typename A5, typename A6> </div> <table class="memname"> <tr> <td class="memname">void <a class="el" href="classWt_1_1Signal.html">Wt::Signal</a>< A1, A2, A3, A4, A5, A6 >::emit </td> <td>(</td> <td class="paramtype">A1 </td> <td class="paramname"><em>a1</em> = <code>NoClass::none</code>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">A2 </td> <td class="paramname"><em>a2</em> = <code>NoClass::none</code>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">A3 </td> <td class="paramname"><em>a3</em> = <code>NoClass::none</code>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">A4 </td> <td class="paramname"><em>a4</em> = <code>NoClass::none</code>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">A5 </td> <td class="paramname"><em>a5</em> = <code>NoClass::none</code>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">A6 </td> <td class="paramname"><em>a6</em> = <code>NoClass::none</code> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td> const</td> </tr> </table> </div> <div class="memdoc"> <p>Emits the signal. </p> <p>The arguments must exactly match the arguments of the target function.</p> <p>This will cause all connected slots to be triggered, with the given arguments. </p> </div> </div> <a class="anchor" id="a4a65919846e7d1cedabd0e9acc65563a"></a><!-- doxytag: member="Wt::Signal::isConnected" ref="a4a65919846e7d1cedabd0e9acc65563a" args="() const " --> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 > </div> <table class="memname"> <tr> <td class="memname">bool <a class="el" href="classWt_1_1Signal.html">Wt::Signal</a>< A1, A2, A3, A4, A5, A6 >::isConnected </td> <td>(</td> <td class="paramname"></td><td>)</td> <td> const<code> [virtual]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Returns whether this signal is connected. </p> <p>Returns true when the signal was connected to to at least one slot. </p> <p>Implements <a class="el" href="classWt_1_1SignalBase.html#a13a3106be8949b273edc74aa61be14ce">Wt::SignalBase</a>.</p> </div> </div> <a class="anchor" id="a10c70ce5cafb6170e56e8df36bbb9a7a"></a><!-- doxytag: member="Wt::Signal::operator()" ref="a10c70ce5cafb6170e56e8df36bbb9a7a" args="(A1 a1=NoClass::none, A2 a2=NoClass::none, A3 a3=NoClass::none, A4 a4=NoClass::none, A5 a5=NoClass::none, A6 a6=NoClass::none) const " --> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename A1, typename A2, typename A3, typename A4, typename A5, typename A6> </div> <table class="memname"> <tr> <td class="memname">void <a class="el" href="classWt_1_1Signal.html">Wt::Signal</a>< A1, A2, A3, A4, A5, A6 >::operator() </td> <td>(</td> <td class="paramtype">A1 </td> <td class="paramname"><em>a1</em> = <code>NoClass::none</code>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">A2 </td> <td class="paramname"><em>a2</em> = <code>NoClass::none</code>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">A3 </td> <td class="paramname"><em>a3</em> = <code>NoClass::none</code>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">A4 </td> <td class="paramname"><em>a4</em> = <code>NoClass::none</code>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">A5 </td> <td class="paramname"><em>a5</em> = <code>NoClass::none</code>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">A6 </td> <td class="paramname"><em>a6</em> = <code>NoClass::none</code> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td> const</td> </tr> </table> </div> <div class="memdoc"> <p>Emits the signal. </p> <p>This is equivalent to <a class="el" href="classWt_1_1Signal.html#a8d9cf8a1e83634462fe2b492b3beb1c5" title="Emits the signal.">emit()</a>.</p> <dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1Signal.html#a8d9cf8a1e83634462fe2b492b3beb1c5" title="Emits the signal.">emit</a> </dd></dl> </div> </div> </div> <!-- window showing the filter options --> <div id="MSearchSelectWindow" onmouseover="return searchBox.OnSearchSelectShow()" onmouseout="return searchBox.OnSearchSelectHide()" onkeydown="return searchBox.OnSearchSelectKey(event)"> <a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Classes</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Namespaces</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span 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