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<h1>sigc::signal< T_return, T_arg1, T_arg2, T_arg3, T_arg4, T_arg5, T_arg6, T_arg7 > Class Template Reference<br/>
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[<a class="el" href="group__signal.html">Signals</a>]</small>
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<!-- doxytag: class="sigc::signal" --><!-- doxytag: inherits="signal7< T_return, T_arg1, T_arg2, T_arg3, T_arg4, T_arg5, T_arg6, T_arg7, nil >" -->
<p>Convenience wrapper for the numbered <a class="el" href="classsigc_1_1signal.html" title="Convenience wrapper for the numbered sigc::signal# templates.">sigc::signal</a># templates. <a href="#_details">More...</a></p>
<p><code>#include <sigc++/signal.h></code></p>
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Inheritance diagram for sigc::signal< T_return, T_arg1, T_arg2, T_arg3, T_arg4, T_arg5, T_arg6, T_arg7 >:<!-- endSectionHeader --></div>
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<tr><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1signal_1_1accumulated.html">accumulated</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Convenience wrapper for the numbered <a class="el" href="classsigc_1_1signal.html" title="Convenience wrapper for the numbered sigc::signal# templates.">sigc::signal</a># templates. <a href="classsigc_1_1signal_1_1accumulated.html#_details">More...</a><br/></td></tr>
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Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a271b486daa2bf801ed7d019da9aa33a1"></a><!-- doxytag: member="sigc::signal::signal" ref="a271b486daa2bf801ed7d019da9aa33a1" args="(const signal &src)" -->
 </td><td class="memItemRight" valign="bottom"><b>signal</b> (const <a class="el" href="classsigc_1_1signal.html">signal</a>& src)</td></tr>
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<hr/><a name="_details"></a><h2>Detailed Description</h2>
<h3>template <class T_return, class T_arg1 = nil, class T_arg2 = nil, class T_arg3 = nil, class T_arg4 = nil, class T_arg5 = nil, class T_arg6 = nil, class T_arg7 = nil><br/>
class sigc::signal< T_return, T_arg1, T_arg2, T_arg3, T_arg4, T_arg5, T_arg6, T_arg7 ></h3>
<p>Convenience wrapper for the numbered <a class="el" href="classsigc_1_1signal.html" title="Convenience wrapper for the numbered sigc::signal# templates.">sigc::signal</a># templates. </p>
<p>signal can be used to <a class="el" href="classsigc_1_1signal7.html#adc55ac9b0f935fd87a67904022e03cb2" title="Add a slot to the list of slots.">connect()</a> slots that are invoked during subsequent calls to <a class="el" href="classsigc_1_1signal7.html#a5ee8eaa67f05f84ee185841142a34fb0" title="Triggers the emission of the signal.">emit()</a>. Any functor or slot can be passed into <a class="el" href="classsigc_1_1signal7.html#adc55ac9b0f935fd87a67904022e03cb2" title="Add a slot to the list of slots.">connect()</a>. It is converted into a slot implicitly.</p>
<p>If you want to connect one signal to another, use <a class="el" href="classsigc_1_1signal7.html#a0948c25035b18b01efa60d08b26f6d51" title="Creates a functor that calls emit() on this signal.">make_slot()</a> to retrieve a functor that emits the signal when invoked.</p>
<p>Be careful if you directly pass one signal into the <a class="el" href="classsigc_1_1signal7.html#adc55ac9b0f935fd87a67904022e03cb2" title="Add a slot to the list of slots.">connect()</a> method of another: a shallow copy of the signal is made and the signal's slots are not disconnected until both the signal and its clone are destroyed, which is probably not what you want!</p>
<p>An STL-style list interface for the signal's list of slots can be retrieved with <a class="el" href="classsigc_1_1signal7.html#a68153d9079b4881352113079cd6216f7" title="Creates an STL-style interface for the signal's list of slots.">slots()</a>. This interface supports iteration, insertion and removal of slots.</p>
<p>The template arguments determine the function signature of the <a class="el" href="classsigc_1_1signal7.html#a5ee8eaa67f05f84ee185841142a34fb0" title="Triggers the emission of the signal.">emit()</a> function:</p>
<ul>
<li><em>T_return</em> The desired return type of the <a class="el" href="classsigc_1_1signal7.html#a5ee8eaa67f05f84ee185841142a34fb0" title="Triggers the emission of the signal.">emit()</a> function.</li>
<li><em>T_arg1</em> Argument type used in the definition of <a class="el" href="classsigc_1_1signal7.html#a5ee8eaa67f05f84ee185841142a34fb0" title="Triggers the emission of the signal.">emit()</a>. The default <code>nil</code> means no argument.</li>
<li><em>T_arg2</em> Argument type used in the definition of <a class="el" href="classsigc_1_1signal7.html#a5ee8eaa67f05f84ee185841142a34fb0" title="Triggers the emission of the signal.">emit()</a>. The default <code>nil</code> means no argument.</li>
<li><em>T_arg3</em> Argument type used in the definition of <a class="el" href="classsigc_1_1signal7.html#a5ee8eaa67f05f84ee185841142a34fb0" title="Triggers the emission of the signal.">emit()</a>. The default <code>nil</code> means no argument.</li>
<li><em>T_arg4</em> Argument type used in the definition of <a class="el" href="classsigc_1_1signal7.html#a5ee8eaa67f05f84ee185841142a34fb0" title="Triggers the emission of the signal.">emit()</a>. The default <code>nil</code> means no argument.</li>
<li><em>T_arg5</em> Argument type used in the definition of <a class="el" href="classsigc_1_1signal7.html#a5ee8eaa67f05f84ee185841142a34fb0" title="Triggers the emission of the signal.">emit()</a>. The default <code>nil</code> means no argument.</li>
<li><em>T_arg6</em> Argument type used in the definition of <a class="el" href="classsigc_1_1signal7.html#a5ee8eaa67f05f84ee185841142a34fb0" title="Triggers the emission of the signal.">emit()</a>. The default <code>nil</code> means no argument.</li>
<li><em>T_arg7</em> Argument type used in the definition of <a class="el" href="classsigc_1_1signal7.html#a5ee8eaa67f05f84ee185841142a34fb0" title="Triggers the emission of the signal.">emit()</a>. The default <code>nil</code> means no argument.</li>
</ul>
<p>To specify an accumulator type the nested class <a class="el" href="classsigc_1_1signal_1_1accumulated.html" title="Convenience wrapper for the numbered sigc::signal# templates.">signal::accumulated</a> can be used.</p>
<dl class="user"><dt><b>Example:</b></dt><dd><div class="fragment"><pre class="fragment"> <span class="keywordtype">void</span> foo(<span class="keywordtype">int</span>) {}
<a class="code" href="classsigc_1_1signal.html" title="Convenience wrapper for the numbered sigc::signal# templates.">sigc::signal<void, long></a> sig;
sig.<a class="code" href="classsigc_1_1signal7.html#adc55ac9b0f935fd87a67904022e03cb2" title="Add a slot to the list of slots.">connect</a>(<a class="code" href="group__ptr__fun.html#gada8b678665c14dc85eb32d25b7299465" title="Creates a functor of type sigc::pointer_functor0 which wraps an existing non-member function...">sigc::ptr_fun</a>(&foo));
sig.<a class="code" href="classsigc_1_1signal7.html#a5ee8eaa67f05f84ee185841142a34fb0" title="Triggers the emission of the signal.">emit</a>(19);
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