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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<div class="navpath"><a class="el" href="namespaceWt.html">Wt</a>::<a class="el" href="classWt_1_1Signal.html">Signal</a>
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<h1>Wt::Signal< A1, A2, A3, A4, A5, A6 > Class Template Reference<br>
<small>
[<a class="el" href="group__signalslot.html">Signal/slot system</a>]</small>
</h1><!-- doxytag: class="Wt::Signal" --><!-- doxytag: inherits="Wt::SignalBase" -->A signal that propagates events to listeners.
<a href="#_details">More...</a>
<p>
<code>#include <Wt/WSignal></code>
<p>
Inherits Wt::SignalBase.
<p>
Inherited by Wt::Signal< void >.
<p>
<p>
<a href="classWt_1_1Signal-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#a481062b581f9d2f071bf07b421d87ca">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="#a481062b581f9d2f071bf07b421d87ca"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="e665a336ae3e576bcb372f16c306d4d1"></a><!-- doxytag: member="Wt::Signal::~Signal" ref="e665a336ae3e576bcb372f16c306d4d1" args="()" -->
</td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#e665a336ae3e576bcb372f16c306d4d1">~Signal</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <br></td></tr>
<tr><td class="memTemplParams" nowrap colspan="2">template<class F> </td></tr>
<tr><td class="memTemplItemLeft" nowrap align="right" valign="top">boost::signals::connection </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#6fc9536d2e7f59684ec32f3734b01f38">connect</a> (const F &f)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Connects to a function. <a href="#6fc9536d2e7f59684ec32f3734b01f38"></a><br></td></tr>
<tr><td class="memTemplParams" nowrap colspan="2">template<class T, class V> </td></tr>
<tr><td class="memTemplItemLeft" nowrap align="right" valign="top">boost::signals::connection </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#e6b9bffa47c0ffdd1667e8f13e8dab74">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="#e6b9bffa47c0ffdd1667e8f13e8dab74"></a><br></td></tr>
<tr><td class="memTemplParams" nowrap colspan="2">template<class T, class V> </td></tr>
<tr><td class="memTemplItemLeft" nowrap align="right" valign="top">boost::signals::connection </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#7f296d5965c03785c7a635431f7f6a79">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="#7f296d5965c03785c7a635431f7f6a79"></a><br></td></tr>
<tr><td class="memTemplParams" nowrap colspan="2">template<class T, class V> </td></tr>
<tr><td class="memTemplItemLeft" nowrap align="right" valign="top">boost::signals::connection </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#a1a8436d769d11f5cb0c1febafd1e27d">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="#a1a8436d769d11f5cb0c1febafd1e27d"></a><br></td></tr>
<tr><td class="memTemplParams" nowrap colspan="2">template<class T, class V> </td></tr>
<tr><td class="memTemplItemLeft" nowrap align="right" valign="top">boost::signals::connection </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#239b63678084087ba15fd17f6ab1a312">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="#239b63678084087ba15fd17f6ab1a312"></a><br></td></tr>
<tr><td class="memTemplParams" nowrap colspan="2">template<class T, class V> </td></tr>
<tr><td class="memTemplItemLeft" nowrap align="right" valign="top">boost::signals::connection </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#976facef99c1a6a53871bd7118c7e1bc">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="#976facef99c1a6a53871bd7118c7e1bc"></a><br></td></tr>
<tr><td class="memTemplParams" nowrap colspan="2">template<class T, class V> </td></tr>
<tr><td class="memTemplItemLeft" nowrap align="right" valign="top">boost::signals::connection </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#906499f6b97c28d1da8b5c615aee41dc">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="#906499f6b97c28d1da8b5c615aee41dc"></a><br></td></tr>
<tr><td class="memTemplParams" nowrap colspan="2">template<class T, class V> </td></tr>
<tr><td class="memTemplItemLeft" nowrap align="right" valign="top">boost::signals::connection </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#d5eaf26f300335ccbf37ed71026ff1b7">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="#d5eaf26f300335ccbf37ed71026ff1b7"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#b9ec97260c79e7b546b7235ad2ffd627">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)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Emits the signal. <a href="#b9ec97260c79e7b546b7235ad2ffd627"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#c16e93ada5d9b28339d399d2e12d6f51">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)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Emits the signal. <a href="#c16e93ada5d9b28339d399d2e12d6f51"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="4a65919846e7d1cedabd0e9acc65563a"></a><!-- doxytag: member="Wt::Signal::isConnected" ref="4a65919846e7d1cedabd0e9acc65563a" args="() const " -->
bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1Signal.html#4a65919846e7d1cedabd0e9acc65563a">isConnected</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Is this signal connected to at least one slot ? <br></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
<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>
A signal that propagates events to listeners.
<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>
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>
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>
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#413deb54de40ee278dd554e4960d58ca" 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#e11e050cce0d4a8f742afa3ef92bfe8c" title="Event signal emitted when a mouse key was clicked on this widget.">clicked</a>().connect(SLOT(<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_.emit(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: <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(SLOT(<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" compact><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>
<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="a481062b581f9d2f071bf07b421d87ca"></a><!-- doxytag: member="Wt::Signal::Signal" ref="a481062b581f9d2f071bf07b421d87ca" 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><code> [inline]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Creates a signal.
<p>
The <code>sender</code> is the object that will be identified as <a class="el" href="classWt_1_1WObject.html#413deb54de40ee278dd554e4960d58ca" title="Returns the sender of the current slot call.">WObject::sender()</a> when executing connected slots may be passed as an argument.<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>.
</div>
</div><p>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="6fc9536d2e7f59684ec32f3734b01f38"></a><!-- doxytag: member="Wt::Signal::connect" ref="6fc9536d2e7f59684ec32f3734b01f38" args="(const F &f)" -->
<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>f</em> </td>
<td> ) </td>
<td><code> [inline]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Connects to a function.
<p>
This variant of the overloaded <a class="el" href="classWt_1_1Signal.html#6fc9536d2e7f59684ec32f3734b01f38" title="Connects to a function.">connect()</a> method supports a template function object (which supports operator ()).<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>
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.
</div>
</div><p>
<a class="anchor" name="e6b9bffa47c0ffdd1667e8f13e8dab74"></a><!-- doxytag: member="Wt::Signal::connect" ref="e6b9bffa47c0ffdd1667e8f13e8dab74" 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><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td><code> [inline]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Connects a slot that takes no arguments.
<p>
This is always possible (even when the signal specifies a number of arguments).<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.
</div>
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<a class="anchor" name="7f296d5965c03785c7a635431f7f6a79"></a><!-- doxytag: member="Wt::Signal::connect" ref="7f296d5965c03785c7a635431f7f6a79" args="(T *target, void(V::*method)(A1))" -->
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<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>
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<td class="paramkey"></td>
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<td></td><td></td><td><code> [inline]</code></td>
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<p>
Connects a slot that takes one argument.
<p>
This is only possible for signals that take at least one argument.<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1Signal.html#6fc9536d2e7f59684ec32f3734b01f38" title="Connects to a function.">connect</a>(T *target, void (V::*method)()) </dd></dl>
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<a class="anchor" name="a1a8436d769d11f5cb0c1febafd1e27d"></a><!-- doxytag: member="Wt::Signal::connect" ref="a1a8436d769d11f5cb0c1febafd1e27d" args="(T *target, void(V::*method)(A1, A2))" -->
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<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>
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<td class="paramkey"></td>
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<td class="paramtype">void(V::*)(A1, A2) </td>
<td class="paramname"> <em>method</em></td><td> </td>
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<td></td><td></td><td><code> [inline]</code></td>
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<p>
Connects a slot that takes two arguments.
<p>
This is only possible for signals that take at least two arguments.<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1Signal.html#6fc9536d2e7f59684ec32f3734b01f38" title="Connects to a function.">connect</a>(T *target, void (V::*method)()) </dd></dl>
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<a class="anchor" name="239b63678084087ba15fd17f6ab1a312"></a><!-- doxytag: member="Wt::Signal::connect" ref="239b63678084087ba15fd17f6ab1a312" args="(T *target, void(V::*method)(A1, A2, A3))" -->
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<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>
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<tr>
<td class="paramkey"></td>
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<td class="paramtype">void(V::*)(A1, A2, A3) </td>
<td class="paramname"> <em>method</em></td><td> </td>
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<td>)</td>
<td></td><td></td><td><code> [inline]</code></td>
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<p>
Connects a slot that takes three arguments.
<p>
This is only possible for signals that take at least three arguments.<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1Signal.html#6fc9536d2e7f59684ec32f3734b01f38" title="Connects to a function.">connect</a>(T *target, void (V::*method)()) </dd></dl>
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<a class="anchor" name="976facef99c1a6a53871bd7118c7e1bc"></a><!-- doxytag: member="Wt::Signal::connect" ref="976facef99c1a6a53871bd7118c7e1bc" args="(T *target, void(V::*method)(A1, A2, A3, A4))" -->
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<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><td> </td>
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<td></td><td></td><td><code> [inline]</code></td>
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<div class="memdoc">
<p>
Connects a slot that takes four arguments.
<p>
This is only possible for signals that take at least four arguments.<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1Signal.html#6fc9536d2e7f59684ec32f3734b01f38" title="Connects to a function.">connect</a>(T *target, void (V::*method)()) </dd></dl>
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<a class="anchor" name="906499f6b97c28d1da8b5c615aee41dc"></a><!-- doxytag: member="Wt::Signal::connect" ref="906499f6b97c28d1da8b5c615aee41dc" args="(T *target, void(V::*method)(A1, A2, A3, A4, A5))" -->
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<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>
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<td class="paramkey"></td>
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<td class="paramtype">void(V::*)(A1, A2, A3, A4, A5) </td>
<td class="paramname"> <em>method</em></td><td> </td>
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<td></td><td></td><td><code> [inline]</code></td>
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<p>
Connects a slot that takes five arguments.
<p>
This is only possible for signals that take at least five arguments.<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1Signal.html#6fc9536d2e7f59684ec32f3734b01f38" title="Connects to a function.">connect</a>(T *target, void (V::*method)()) </dd></dl>
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<a class="anchor" name="d5eaf26f300335ccbf37ed71026ff1b7"></a><!-- doxytag: member="Wt::Signal::connect" ref="d5eaf26f300335ccbf37ed71026ff1b7" args="(T *target, void(V::*method)(A1, A2, A3, A4, A5, A6))" -->
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<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>
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<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><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td><code> [inline]</code></td>
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<div class="memdoc">
<p>
Connects a slot that takes six arguments.
<p>
This is only possible for signals that take at least six arguments.<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1Signal.html#6fc9536d2e7f59684ec32f3734b01f38" title="Connects to a function.">connect</a>(T *target, void (V::*method)()) </dd></dl>
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</div><p>
<a class="anchor" name="b9ec97260c79e7b546b7235ad2ffd627"></a><!-- doxytag: member="Wt::Signal::emit" ref="b9ec97260c79e7b546b7235ad2ffd627" 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)" -->
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<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>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">A2 </td>
<td class="paramname"> <em>a2</em> = <code>NoClass::none</code>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">A3 </td>
<td class="paramname"> <em>a3</em> = <code>NoClass::none</code>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">A4 </td>
<td class="paramname"> <em>a4</em> = <code>NoClass::none</code>, </td>
</tr>
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<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><td> </td>
</tr>
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<td>)</td>
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<p>
Emits the signal.
<p>
The arguments must exactly match the arguments of the target function.<p>
This will cause all connected slots to be triggered, with the given arguments.
</div>
</div><p>
<a class="anchor" name="c16e93ada5d9b28339d399d2e12d6f51"></a><!-- doxytag: member="Wt::Signal::operator()" ref="c16e93ada5d9b28339d399d2e12d6f51" 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)" -->
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<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>
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<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><td> </td>
</tr>
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<td></td>
<td>)</td>
<td></td><td></td><td><code> [inline]</code></td>
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<p>
Emits the signal.
<p>
This is equivalent to <a class="el" href="classWt_1_1Signal.html#b9ec97260c79e7b546b7235ad2ffd627" title="Emits the signal.">emit()</a>.<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1Signal.html#b9ec97260c79e7b546b7235ad2ffd627" title="Emits the signal.">emit</a> </dd></dl>
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</div><p>
</div>
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