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<title>libsigc++ 2.0: sigc::signal< T_return, T_arg1, T_arg2, T_arg3, T_arg4, T_arg5, T_arg6, T_arg7 > Class Template Reference</title>
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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>
<small>
[<a class="el" href="group__signal.html">Signals</a>]</small>
</h1>Convenience wrapper for the numbered sigc::signal# templates.
<a href="#_details">More...</a>
<p>
Inheritance diagram for sigc::signal< T_return, T_arg1, T_arg2, T_arg3, T_arg4, T_arg5, T_arg6, T_arg7 >:<p><center><img src="classsigc_1_1signal__inherit__graph.png" border="0" usemap="#sigc_1_1signal_3_01T__return_00_01T__arg1_00_01T__arg2_00_01T__arg3_00_01T__arg4_00_01T__arg5_00_01T__arg6_00_01T__arg7_01_4__inherit__map" alt="Inheritance graph"></center>
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<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center><a href="classsigc_1_1signal-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
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<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="classsigc_1_1signal.html#a0">signal</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1signal.html#a1">signal</a> (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>
Convenience wrapper for the numbered sigc::signal# templates.
<p>
signal can be used to <a class="el" href="classsigc_1_1signal7.html#a0">connect()</a> slots that are invoked during subsequent calls to <a class="el" href="classsigc_1_1signal7.html#a1">emit()</a>. Any functor or slot can be passed into <a class="el" href="classsigc_1_1signal7.html#a0">connect()</a>. It is converted into a slot implicitly.<p>
If you want to connect one signal to another, use <a class="el" href="classsigc_1_1signal7.html#a3">make_slot()</a> to retrieve a functor that emits the signal when invoked.<p>
Be careful if you directly pass one signal into the <a class="el" href="classsigc_1_1signal7.html#a0">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>
An STL-style list interface for the signal's list of slots can be retrieved with <a class="el" href="classsigc_1_1signal7.html#a4">slots()</a>. This interface supports iteration, insertion and removal of slots.<p>
The template arguments determine the function signature of the <a class="el" href="classsigc_1_1signal7.html#a1">emit()</a> function:<ul>
<li><em>T_return</em> The desired return type of the <a class="el" href="classsigc_1_1signal7.html#a1">emit()</a> function.</li><li><em>T_arg1</em> Argument type used in the definition of <a class="el" href="classsigc_1_1signal7.html#a1">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#a1">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#a1">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#a1">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#a1">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#a1">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#a1">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">signal::accumulated</a> can be used.<p>
<dl compact><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">sigc::signal<void, long></a> sig;
sig.<a class="code" href="classsigc_1_1signal7.html#a0">connect</a>(sigc::ptr_fun(&foo));
sig.<a class="code" href="classsigc_1_1signal7.html#a1">emit</a>(19);
</pre></div></dd></dl>
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<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="a0" doxytag="sigc::signal::signal"></a><p>
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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> </td>
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<td class="md" nowrap valign="top"><a class="el" href="classsigc_1_1signal.html">sigc::signal</a><T_return, T_arg1, T_arg2, T_arg3, T_arg4, T_arg5, T_arg6, T_arg7>::<a class="el" href="classsigc_1_1signal.html">signal</a> </td>
<td class="md" valign="top">(</td>
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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> </td>
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<td class="md" nowrap valign="top"><a class="el" href="classsigc_1_1signal.html">sigc::signal</a><T_return, T_arg1, T_arg2, T_arg3, T_arg4, T_arg5, T_arg6, T_arg7>::<a class="el" href="classsigc_1_1signal.html">signal</a> </td>
<td class="md" valign="top">(</td>
<td class="md" nowrap valign="top">const <a class="el" href="classsigc_1_1signal.html">signal</a><T_return, T_arg1, T_arg2, T_arg3, T_arg4, T_arg5, T_arg6, T_arg7>& </td>
<td class="mdname1" valign="top" nowrap> <em>src</em> </td>
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<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="signal_8h.html">signal.h</a></ul>
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