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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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<a class="el" href="namespacesigc.html">sigc</a>::<a class="el" href="classsigc_1_1signal.html">signal</a></div>
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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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<small>
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[<a class="el" href="group__signal.html">Signals</a>]</small>
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</h1><!-- doxytag: class="sigc::signal" --><!-- doxytag: inherits="sigc::signal7<T_return, T_arg1, T_arg2, T_arg3, T_arg4, T_arg5, T_arg6, T_arg7, nil>" -->Convenience wrapper for the numbered <a class="el" href="classsigc_1_1signal.html">sigc::signal</a># templates.
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<a href="#_details">More...</a>
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<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 >:<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_00a530865d7dae4ead50763631a99846f4" alt="Inheritance graph"></center>
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<map name="sigc_1_1signal_3_01T__return_00_01T__arg1_00_01T__arg2_00_01T__arg3_00_01T__arg4_00_01T__arg5_00a530865d7dae4ead50763631a99846f4">
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</map>
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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></td></tr>
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<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1signal.html#50432d1aebfbee5ef17a3f434d0c50bf">signal</a> ()</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1signal.html#271b486daa2bf801ed7d019da9aa33a1">signal</a> (const <a class="el" href="classsigc_1_1signal.html">signal</a>& src)</td></tr>
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<tr><td colspan="2"><br><h2>Classes</h2></td></tr>
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<tr><td class="memItemLeft" nowrap 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>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Convenience wrapper for the numbered <a class="el" href="classsigc_1_1signal.html">sigc::signal</a># templates. <a href="classsigc_1_1signal_1_1accumulated.html#_details">More...</a><br></td></tr>
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</table>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
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<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>
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class sigc::signal< T_return, T_arg1, T_arg2, T_arg3, T_arg4, T_arg5, T_arg6, T_arg7 ></h3>
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Convenience wrapper for the numbered <a class="el" href="classsigc_1_1signal.html">sigc::signal</a># templates.
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<p>
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signal can be used to <a class="el" href="classsigc_1_1signal7.html#dc55ac9b0f935fd87a67904022e03cb2">connect()</a> slots that are invoked during subsequent calls to <a class="el" href="classsigc_1_1signal7.html#547621f6b429c128b0df1204707465fe">emit()</a>. Any functor or slot can be passed into <a class="el" href="classsigc_1_1signal7.html#dc55ac9b0f935fd87a67904022e03cb2">connect()</a>. It is converted into a slot implicitly.<p>
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If you want to connect one signal to another, use <a class="el" href="classsigc_1_1signal7.html#216c59a90d33b42e293e83c053c0fdf0">make_slot()</a> to retrieve a functor that emits the signal when invoked.<p>
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Be careful if you directly pass one signal into the <a class="el" href="classsigc_1_1signal7.html#dc55ac9b0f935fd87a67904022e03cb2">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>
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An STL-style list interface for the signal's list of slots can be retrieved with <a class="el" href="classsigc_1_1signal7.html#68153d9079b4881352113079cd6216f7">slots()</a>. This interface supports iteration, insertion and removal of slots.<p>
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The template arguments determine the function signature of the <a class="el" href="classsigc_1_1signal7.html#547621f6b429c128b0df1204707465fe">emit()</a> function:<ul>
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<li><em>T_return</em> The desired return type of the <a class="el" href="classsigc_1_1signal7.html#547621f6b429c128b0df1204707465fe">emit()</a> function.</li><li><em>T_arg1</em> Argument type used in the definition of <a class="el" href="classsigc_1_1signal7.html#547621f6b429c128b0df1204707465fe">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#547621f6b429c128b0df1204707465fe">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#547621f6b429c128b0df1204707465fe">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#547621f6b429c128b0df1204707465fe">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#547621f6b429c128b0df1204707465fe">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#547621f6b429c128b0df1204707465fe">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#547621f6b429c128b0df1204707465fe">emit()</a>. The default <code>nil</code> means no argument.</li></ul>
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<p>
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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>
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<dl class="user" compact><dt><b>Example:</b></dt><dd><div class="fragment"><pre class="fragment"> <span class="keywordtype">void</span> foo(<span class="keywordtype">int</span>) {}
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<a class="code" href="classsigc_1_1signal.html">sigc::signal<void, long></a> sig;
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sig.<a class="code" href="classsigc_1_1signal7.html#dc55ac9b0f935fd87a67904022e03cb2">connect</a>(<a class="code" href="group__ptr__fun.html#gda8b678665c14dc85eb32d25b7299465">sigc::ptr_fun</a>(&foo));
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sig.<a class="code" href="classsigc_1_1signal7.html#547621f6b429c128b0df1204707465fe">emit</a>(19);
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</pre></div> </dd></dl>
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<p>
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<hr><h2>Constructor & Destructor Documentation</h2>
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<a class="anchor" name="50432d1aebfbee5ef17a3f434d0c50bf"></a><!-- doxytag: member="sigc::signal::signal" ref="50432d1aebfbee5ef17a3f434d0c50bf" args="()" -->
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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> </div>
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<td class="memname"><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>
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<td>(</td>
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<td class="paramname"> </td>
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<td> ) </td>
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<td width="100%"><code> [inline]</code></td>
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<a class="anchor" name="271b486daa2bf801ed7d019da9aa33a1"></a><!-- doxytag: member="sigc::signal::signal" ref="271b486daa2bf801ed7d019da9aa33a1" args="(const signal &src)" -->
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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> </div>
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<td class="memname"><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>
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<td>(</td>
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<td class="paramtype">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>
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<td class="paramname"> <em>src</em> </td>
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<td> ) </td>
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</div><p>
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<hr>The documentation for this class was generated from the following file:<ul>
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<li><a class="el" href="signal_8h.html">signal.h</a></ul>
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