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  59 <p>Base class for the <a class="el" href="classsigc_1_1signal.html" title="Convenience wrapper for the numbered sigc::signal# templates.">sigc::signal</a># templates.
  60  <a href="structsigc_1_1signal__base.html#details">More...</a></p>
  61
  62 <p><code>#include &lt;sigc++/signal_base.h&gt;</code></p>
  63 <div class="dynheader">
  64 Inheritance diagram for sigc::signal_base:</div>
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 128 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
 129 Public Member Functions</h2></td></tr>
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 148 <tr class="memdesc:a24e7fc4e07ac19cebafe8e3bd71bfe94"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns whether the list of slots is empty.  <a href="structsigc_1_1signal__base.html#a24e7fc4e07ac19cebafe8e3bd71bfe94">More...</a><br /></td></tr>
 149 <tr class="separator:a24e7fc4e07ac19cebafe8e3bd71bfe94"><td class="memSeparator" colspan="2">&#160;</td></tr>
 150 <tr class="memitem:a90b36a7b33e107ce0af0de895e0df286"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1signal__base.html">signal_base</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a90b36a7b33e107ce0af0de895e0df286">operator=</a> (const <a class="el" href="structsigc_1_1signal__base.html">signal_base</a> &amp; src)</td></tr>
 151 <tr class="separator:a90b36a7b33e107ce0af0de895e0df286"><td class="memSeparator" colspan="2">&#160;</td></tr>
 152 <tr class="memitem:a277a34edf44207fb4784807eac5872c6"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1signal__base.html">signal_base</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a277a34edf44207fb4784807eac5872c6">operator=</a> (<a class="el" href="structsigc_1_1signal__base.html">signal_base</a> &amp;&amp; src)</td></tr>
 153 <tr class="separator:a277a34edf44207fb4784807eac5872c6"><td class="memSeparator" colspan="2">&#160;</td></tr>
 154 <tr class="memitem:a0725416f747d6db3c57fa318a9f887a8"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1signal__base.html#aa60e22abd088b6cde2dd50fb3f228aa4">size_type</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a0725416f747d6db3c57fa318a9f887a8">size</a> () const noexcept</td></tr>
 155 <tr class="memdesc:a0725416f747d6db3c57fa318a9f887a8"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the number of slots in the list.  <a href="structsigc_1_1signal__base.html#a0725416f747d6db3c57fa318a9f887a8">More...</a><br /></td></tr>
 156 <tr class="separator:a0725416f747d6db3c57fa318a9f887a8"><td class="memSeparator" colspan="2">&#160;</td></tr>
 157 <tr class="memitem:aebb7ac69ea745cd60c0505f8d553d27f"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#aebb7ac69ea745cd60c0505f8d553d27f">unblock</a> () noexcept</td></tr>
 158 <tr class="memdesc:aebb7ac69ea745cd60c0505f8d553d27f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Unsets the blocking state of all slots in the list.  <a href="structsigc_1_1signal__base.html#aebb7ac69ea745cd60c0505f8d553d27f">More...</a><br /></td></tr>
 159 <tr class="separator:aebb7ac69ea745cd60c0505f8d553d27f"><td class="memSeparator" colspan="2">&#160;</td></tr>
 160 <tr class="inherit_header pub_methods_structsigc_1_1trackable"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_structsigc_1_1trackable')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="structsigc_1_1trackable.html">sigc::trackable</a></td></tr>
 161 <tr class="memitem:a7e1348841e762fb41b41c6f2ce9fa073 inherit pub_methods_structsigc_1_1trackable"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1trackable.html#a7e1348841e762fb41b41c6f2ce9fa073">trackable</a> () noexcept</td></tr>
 162 <tr class="separator:a7e1348841e762fb41b41c6f2ce9fa073 inherit pub_methods_structsigc_1_1trackable"><td class="memSeparator" colspan="2">&#160;</td></tr>
 163 <tr class="memitem:ac8431d9452c9698a012597e6560c72fa inherit pub_methods_structsigc_1_1trackable"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1trackable.html#ac8431d9452c9698a012597e6560c72fa">trackable</a> (const <a class="el" href="structsigc_1_1trackable.html">trackable</a> &amp; src) noexcept</td></tr>
 164 <tr class="separator:ac8431d9452c9698a012597e6560c72fa inherit pub_methods_structsigc_1_1trackable"><td class="memSeparator" colspan="2">&#160;</td></tr>
 165 <tr class="memitem:aba42ed8afb6598106cf68c18a7387f18 inherit pub_methods_structsigc_1_1trackable"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1trackable.html#aba42ed8afb6598106cf68c18a7387f18">trackable</a> (<a class="el" href="structsigc_1_1trackable.html">trackable</a> &amp;&amp; src)</td></tr>
 166 <tr class="separator:aba42ed8afb6598106cf68c18a7387f18 inherit pub_methods_structsigc_1_1trackable"><td class="memSeparator" colspan="2">&#160;</td></tr>
 167 <tr class="memitem:a75587da09e30031db7a2519843f1f4fb inherit pub_methods_structsigc_1_1trackable"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1trackable.html#a75587da09e30031db7a2519843f1f4fb">~trackable</a> ()</td></tr>
 168 <tr class="separator:a75587da09e30031db7a2519843f1f4fb inherit pub_methods_structsigc_1_1trackable"><td class="memSeparator" colspan="2">&#160;</td></tr>
 169 <tr class="memitem:aed95b40846f61b4f202348c71d5913ea inherit pub_methods_structsigc_1_1trackable"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1trackable.html#aed95b40846f61b4f202348c71d5913ea">add_destroy_notify_callback</a> (void *<a class="elRef" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01635.html#a4a0b2b9455f1e2025d77ba49b3863e33">data</a>, <a class="el" href="structsigc_1_1trackable.html#a3338954d7565534bd945290b798e13ed">func_destroy_notify</a> func) const</td></tr>
 170 <tr class="memdesc:aed95b40846f61b4f202348c71d5913ea inherit pub_methods_structsigc_1_1trackable"><td class="mdescLeft">&#160;</td><td class="mdescRight">Add a callback that is executed (notified) when the trackable object is detroyed.  <a href="structsigc_1_1trackable.html#aed95b40846f61b4f202348c71d5913ea">More...</a><br /></td></tr>
 171 <tr class="separator:aed95b40846f61b4f202348c71d5913ea inherit pub_methods_structsigc_1_1trackable"><td class="memSeparator" colspan="2">&#160;</td></tr>
 172 <tr class="memitem:af2e23cfe7adc1ca844a3350bbac557cb inherit pub_methods_structsigc_1_1trackable"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1trackable.html#af2e23cfe7adc1ca844a3350bbac557cb">notify_callbacks</a> ()</td></tr>
 173 <tr class="memdesc:af2e23cfe7adc1ca844a3350bbac557cb inherit pub_methods_structsigc_1_1trackable"><td class="mdescLeft">&#160;</td><td class="mdescRight">Execute and remove all previously installed callbacks.  <a href="structsigc_1_1trackable.html#af2e23cfe7adc1ca844a3350bbac557cb">More...</a><br /></td></tr>
 174 <tr class="separator:af2e23cfe7adc1ca844a3350bbac557cb inherit pub_methods_structsigc_1_1trackable"><td class="memSeparator" colspan="2">&#160;</td></tr>
 175 <tr class="memitem:a7494fbad23a65932ff1457d00d4edaf5 inherit pub_methods_structsigc_1_1trackable"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1trackable.html">trackable</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1trackable.html#a7494fbad23a65932ff1457d00d4edaf5">operator=</a> (const <a class="el" href="structsigc_1_1trackable.html">trackable</a> &amp; src)</td></tr>
 176 <tr class="separator:a7494fbad23a65932ff1457d00d4edaf5 inherit pub_methods_structsigc_1_1trackable"><td class="memSeparator" colspan="2">&#160;</td></tr>
 177 <tr class="memitem:ac3d61cdb452dc46fcdc8a8d42d9c079d inherit pub_methods_structsigc_1_1trackable"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1trackable.html">trackable</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1trackable.html#ac3d61cdb452dc46fcdc8a8d42d9c079d">operator=</a> (<a class="el" href="structsigc_1_1trackable.html">trackable</a> &amp;&amp; src)</td></tr>
 178 <tr class="separator:ac3d61cdb452dc46fcdc8a8d42d9c079d inherit pub_methods_structsigc_1_1trackable"><td class="memSeparator" colspan="2">&#160;</td></tr>
 179 <tr class="memitem:ad1c1845ff5b356f13b32180077f83cff inherit pub_methods_structsigc_1_1trackable"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1trackable.html#ad1c1845ff5b356f13b32180077f83cff">remove_destroy_notify_callback</a> (void *<a class="elRef" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01635.html#a4a0b2b9455f1e2025d77ba49b3863e33">data</a>) const</td></tr>
 180 <tr class="memdesc:ad1c1845ff5b356f13b32180077f83cff inherit pub_methods_structsigc_1_1trackable"><td class="mdescLeft">&#160;</td><td class="mdescRight">Remove a callback previously installed with <a class="el" href="structsigc_1_1trackable.html#aed95b40846f61b4f202348c71d5913ea" title="Add a callback that is executed (notified) when the trackable object is detroyed.">add_destroy_notify_callback()</a>.  <a href="structsigc_1_1trackable.html#ad1c1845ff5b356f13b32180077f83cff">More...</a><br /></td></tr>
 181 <tr class="separator:ad1c1845ff5b356f13b32180077f83cff inherit pub_methods_structsigc_1_1trackable"><td class="memSeparator" colspan="2">&#160;</td></tr>
 182 </table><table class="memberdecls">
 183 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-types"></a>
 184 Protected Types</h2></td></tr>
 185 <tr class="memitem:a328b132e5dfb99dbc3aae1e5c3bb0981"><td class="memItemLeft" align="right" valign="top">typedef <a class="el" href="structsigc_1_1slot__iterator.html">internal::signal_impl::iterator_type</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a></td></tr>
 186 <tr class="separator:a328b132e5dfb99dbc3aae1e5c3bb0981"><td class="memSeparator" colspan="2">&#160;</td></tr>
 187 </table><table class="memberdecls">
 188 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-methods"></a>
 189 Protected Member Functions</h2></td></tr>
 190 <tr class="memitem:a5c89a76a27d69c512f554b841b1bd08a"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a5c89a76a27d69c512f554b841b1bd08a">connect</a> (const <a class="el" href="classsigc_1_1slot__base.html">slot_base</a> &amp; slot_)</td></tr>
 191 <tr class="memdesc:a5c89a76a27d69c512f554b841b1bd08a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Adds a slot at the end of the list of slots.  <a href="structsigc_1_1signal__base.html#a5c89a76a27d69c512f554b841b1bd08a">More...</a><br /></td></tr>
 192 <tr class="separator:a5c89a76a27d69c512f554b841b1bd08a"><td class="memSeparator" colspan="2">&#160;</td></tr>
 193 <tr class="memitem:a50eab6d37728bbbf3beb21d684a72e6c"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a50eab6d37728bbbf3beb21d684a72e6c">connect</a> (<a class="el" href="classsigc_1_1slot__base.html">slot_base</a> &amp;&amp; slot_)</td></tr>
 194 <tr class="memdesc:a50eab6d37728bbbf3beb21d684a72e6c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Adds a slot at the end of the list of slots.  <a href="structsigc_1_1signal__base.html#a50eab6d37728bbbf3beb21d684a72e6c">More...</a><br /></td></tr>
 195 <tr class="separator:a50eab6d37728bbbf3beb21d684a72e6c"><td class="memSeparator" colspan="2">&#160;</td></tr>
 196 <tr class="memitem:a21efc57eea29c3139855909ad4807984"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a21efc57eea29c3139855909ad4807984">erase</a> (<a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> i)</td></tr>
 197 <tr class="memdesc:a21efc57eea29c3139855909ad4807984"><td class="mdescLeft">&#160;</td><td class="mdescRight">Removes the slot at the given position from the list of slots.  <a href="structsigc_1_1signal__base.html#a21efc57eea29c3139855909ad4807984">More...</a><br /></td></tr>
 198 <tr class="separator:a21efc57eea29c3139855909ad4807984"><td class="memSeparator" colspan="2">&#160;</td></tr>
 199 <tr class="memitem:ab0527d817989f2386556ce164c3adfa7"><td class="memItemLeft" align="right" valign="top">internal::signal_impl *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#ab0527d817989f2386556ce164c3adfa7">impl</a> () const</td></tr>
 200 <tr class="memdesc:ab0527d817989f2386556ce164c3adfa7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the signal_impl object encapsulating the list of slots.  <a href="structsigc_1_1signal__base.html#ab0527d817989f2386556ce164c3adfa7">More...</a><br /></td></tr>
 201 <tr class="separator:ab0527d817989f2386556ce164c3adfa7"><td class="memSeparator" colspan="2">&#160;</td></tr>
 202 <tr class="memitem:a87da23ad801faa9e2b6b4be2a747e757"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a87da23ad801faa9e2b6b4be2a747e757">insert</a> (<a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> i, const <a class="el" href="classsigc_1_1slot__base.html">slot_base</a> &amp; slot_)</td></tr>
 203 <tr class="memdesc:a87da23ad801faa9e2b6b4be2a747e757"><td class="mdescLeft">&#160;</td><td class="mdescRight">Adds a slot at the given position into the list of slots.  <a href="structsigc_1_1signal__base.html#a87da23ad801faa9e2b6b4be2a747e757">More...</a><br /></td></tr>
 204 <tr class="separator:a87da23ad801faa9e2b6b4be2a747e757"><td class="memSeparator" colspan="2">&#160;</td></tr>
 205 <tr class="memitem:aa80c33868910139dd2f511afcc31b687"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#aa80c33868910139dd2f511afcc31b687">insert</a> (<a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> i, <a class="el" href="classsigc_1_1slot__base.html">slot_base</a> &amp;&amp; slot_)</td></tr>
 206 <tr class="memdesc:aa80c33868910139dd2f511afcc31b687"><td class="mdescLeft">&#160;</td><td class="mdescRight">Adds a slot at the given position into the list of slots.  <a href="structsigc_1_1signal__base.html#aa80c33868910139dd2f511afcc31b687">More...</a><br /></td></tr>
 207 <tr class="separator:aa80c33868910139dd2f511afcc31b687"><td class="memSeparator" colspan="2">&#160;</td></tr>
 208 </table><table class="memberdecls">
 209 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-attribs"></a>
 210 Protected Attributes</h2></td></tr>
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 213 <tr class="separator:a747d448c28fd256ef580d165eb69f17a"><td class="memSeparator" colspan="2">&#160;</td></tr>
 214 </table>
 215 <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
 216 <div class="textblock"><p>Base class for the <a class="el" href="classsigc_1_1signal.html" title="Convenience wrapper for the numbered sigc::signal# templates.">sigc::signal</a># templates. </p>
 217 <p><a class="el" href="structsigc_1_1signal__base.html" title="Base class for the sigc::signal# templates.">signal_base</a> integrates most of the interface of the derived <a class="el" href="classsigc_1_1signal.html" title="Convenience wrapper for the numbered sigc::signal# templates.">sigc::signal</a># templates. The implementation, however, resides in sigc::internal::signal_impl. A sigc::internal::signal_impl object is dynamically allocated from <a class="el" href="structsigc_1_1signal__base.html" title="Base class for the sigc::signal# templates.">signal_base</a> when first connecting a slot to the signal. This ensures that empty signals don't waste memory.</p>
 218 <p>sigc::internal::signal_impl is reference-counted. When a <a class="el" href="classsigc_1_1signal.html" title="Convenience wrapper for the numbered sigc::signal# templates.">sigc::signal</a># object is copied, the reference count of its sigc::internal::signal_impl object is incremented. Both <a class="el" href="classsigc_1_1signal.html" title="Convenience wrapper for the numbered sigc::signal# templates.">sigc::signal</a># objects then refer to the same sigc::internal::signal_impl object.</p>
 219 <p>Deleting the signal during emission, e.g. from one of its slots, may result in memory leaks. This drawback is fixed in version 3 of libsigc++. A workaround is to make a copy of the signal during the emission: </p><div class="fragment"><div class="line"><a class="code" href="classsigc_1_1signal.html">sigc::signal</a>&lt;...&gt; sig2(*p_sig);</div>
 220 <div class="line">p_sig-&gt;emit();</div>
 221 <div class="ttc" id="aclasssigc_1_1signal_html"><div class="ttname"><a href="classsigc_1_1signal.html">sigc::signal</a></div><div class="ttdoc">Convenience wrapper for the numbered sigc::signal# templates.</div><div class="ttdef"><b>Definition:</b> signal.h:4015</div></div>
 222 </div><!-- fragment --><p> This is not very costly. A sigc::signal&lt;&gt; is not much more than a pointer to a sigc::internal::signal_impl instance, which is not copied. </p>
 223 </div><h2 class="groupheader">Member Typedef Documentation</h2>
 224 <a id="a328b132e5dfb99dbc3aae1e5c3bb0981"></a>
 225 <h2 class="memtitle"><span class="permalink"><a href="#a328b132e5dfb99dbc3aae1e5c3bb0981">&#9670;&#160;</a></span>iterator_type</h2>
 226
 227 <div class="memitem">
 228 <div class="memproto">
 229 <table class="mlabels">
 230   <tr>
 231   <td class="mlabels-left">
 232       <table class="memname">
 233         <tr>
 234           <td class="memname">typedef <a class="el" href="structsigc_1_1slot__iterator.html">internal::signal_impl::iterator_type</a> <a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">sigc::signal_base::iterator_type</a></td>
 235         </tr>
 236       </table>
 237   </td>
 238   <td class="mlabels-right">
 239 <span class="mlabels"><span class="mlabel">protected</span></span>  </td>
 240   </tr>
 241 </table>
 242 </div><div class="memdoc">
 243
 244 </div>
 245 </div>
 246 <a id="aa60e22abd088b6cde2dd50fb3f228aa4"></a>
 247 <h2 class="memtitle"><span class="permalink"><a href="#aa60e22abd088b6cde2dd50fb3f228aa4">&#9670;&#160;</a></span>size_type</h2>
 248
 249 <div class="memitem">
 250 <div class="memproto">
 251       <table class="memname">
 252         <tr>
 253           <td class="memname">typedef std::size_t <a class="el" href="structsigc_1_1signal__base.html#aa60e22abd088b6cde2dd50fb3f228aa4">sigc::signal_base::size_type</a></td>
 254         </tr>
 255       </table>
 256 </div><div class="memdoc">
 257
 258 </div>
 259 </div>
 260 <h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
 261 <a id="aff65198ddcb4fbccb644ff853e663e0e"></a>
 262 <h2 class="memtitle"><span class="permalink"><a href="#aff65198ddcb4fbccb644ff853e663e0e">&#9670;&#160;</a></span>signal_base() <span class="overload">[1/3]</span></h2>
 263
 264 <div class="memitem">
 265 <div class="memproto">
 266 <table class="mlabels">
 267   <tr>
 268   <td class="mlabels-left">
 269       <table class="memname">
 270         <tr>
 271           <td class="memname">sigc::signal_base::signal_base </td>
 272           <td>(</td>
 273           <td class="paramname"></td><td>)</td>
 274           <td></td>
 275         </tr>
 276       </table>
 277   </td>
 278   <td class="mlabels-right">
 279 <span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>
 280   </tr>
 281 </table>
 282 </div><div class="memdoc">
 283
 284 </div>
 285 </div>
 286 <a id="a761e95b8c7b460664d3338ed3eb39543"></a>
 287 <h2 class="memtitle"><span class="permalink"><a href="#a761e95b8c7b460664d3338ed3eb39543">&#9670;&#160;</a></span>signal_base() <span class="overload">[2/3]</span></h2>
 288
 289 <div class="memitem">
 290 <div class="memproto">
 291 <table class="mlabels">
 292   <tr>
 293   <td class="mlabels-left">
 294       <table class="memname">
 295         <tr>
 296           <td class="memname">sigc::signal_base::signal_base </td>
 297           <td>(</td>
 298           <td class="paramtype">const <a class="el" href="structsigc_1_1signal__base.html">signal_base</a> &amp;&#160;</td>
 299           <td class="paramname"><em>src</em></td><td>)</td>
 300           <td></td>
 301         </tr>
 302       </table>
 303   </td>
 304   <td class="mlabels-right">
 305 <span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>
 306   </tr>
 307 </table>
 308 </div><div class="memdoc">
 309
 310 </div>
 311 </div>
 312 <a id="a9f8570c89cd5c0b35613570a5ea80154"></a>
 313 <h2 class="memtitle"><span class="permalink"><a href="#a9f8570c89cd5c0b35613570a5ea80154">&#9670;&#160;</a></span>signal_base() <span class="overload">[3/3]</span></h2>
 314
 315 <div class="memitem">
 316 <div class="memproto">
 317       <table class="memname">
 318         <tr>
 319           <td class="memname">sigc::signal_base::signal_base </td>
 320           <td>(</td>
 321           <td class="paramtype"><a class="el" href="structsigc_1_1signal__base.html">signal_base</a> &amp;&amp;&#160;</td>
 322           <td class="paramname"><em>src</em></td><td>)</td>
 323           <td></td>
 324         </tr>
 325       </table>
 326 </div><div class="memdoc">
 327
 328 </div>
 329 </div>
 330 <a id="afa2e5807537c989b430015e5ae05a357"></a>
 331 <h2 class="memtitle"><span class="permalink"><a href="#afa2e5807537c989b430015e5ae05a357">&#9670;&#160;</a></span>~signal_base()</h2>
 332
 333 <div class="memitem">
 334 <div class="memproto">
 335       <table class="memname">
 336         <tr>
 337           <td class="memname">sigc::signal_base::~signal_base </td>
 338           <td>(</td>
 339           <td class="paramname"></td><td>)</td>
 340           <td></td>
 341         </tr>
 342       </table>
 343 </div><div class="memdoc">
 344
 345 </div>
 346 </div>
 347 <h2 class="groupheader">Member Function Documentation</h2>
 348 <a id="a52fda4806ec9dbc02baa95ce70c13fb0"></a>
 349 <h2 class="memtitle"><span class="permalink"><a href="#a52fda4806ec9dbc02baa95ce70c13fb0">&#9670;&#160;</a></span>block()</h2>
 350
 351 <div class="memitem">
 352 <div class="memproto">
 353 <table class="mlabels">
 354   <tr>
 355   <td class="mlabels-left">
 356       <table class="memname">
 357         <tr>
 358           <td class="memname">void sigc::signal_base::block </td>
 359           <td>(</td>
 360           <td class="paramtype">bool&#160;</td>
 361           <td class="paramname"><em>should_block</em> = <code>true</code></td><td>)</td>
 362           <td></td>
 363         </tr>
 364       </table>
 365   </td>
 366   <td class="mlabels-right">
 367 <span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>
 368   </tr>
 369 </table>
 370 </div><div class="memdoc">
 371
 372 <p>Sets the blocking state of all slots in the list. </p>
 373 <p>If <em>should_block</em> is <code>true</code> then the blocking state is set. Subsequent emissions of the signal don't invoke the functors contained in the slots until <a class="el" href="structsigc_1_1signal__base.html#aebb7ac69ea745cd60c0505f8d553d27f" title="Unsets the blocking state of all slots in the list.">unblock()</a> or <a class="el" href="structsigc_1_1signal__base.html#a52fda4806ec9dbc02baa95ce70c13fb0" title="Sets the blocking state of all slots in the list.">block()</a> with <em>should_block</em> = <code>false</code> is called. <a class="el" href="classsigc_1_1slot__base.html#a657a8473164c963a5ca4828c88121bb9" title="Sets the blocking state.">sigc::slot_base::block()</a> and <a class="el" href="classsigc_1_1slot__base.html#a25ad0bd4d2cea4dbfcd09f7d393d266d" title="Unsets the blocking state.">sigc::slot_base::unblock()</a> can change the blocking state of individual slots. </p><dl class="params"><dt>Parameters</dt><dd>
 374   <table class="params">
 375     <tr><td class="paramname">should_block</td><td>Indicates whether the blocking state should be set or unset.</td></tr>
 376   </table>
 377   </dd>
 378 </dl>
 379 <dl class="since_2_4"><dt><b><a class="el" href="since_2_4.html#_since_2_4000019">Since libsigc++ 2.4:</a></b></dt><dd></dd></dl>
 380
 381 </div>
 382 </div>
 383 <a id="a228da4dd1eac6905dafbc5697086e503"></a>
 384 <h2 class="memtitle"><span class="permalink"><a href="#a228da4dd1eac6905dafbc5697086e503">&#9670;&#160;</a></span>blocked()</h2>
 385
 386 <div class="memitem">
 387 <div class="memproto">
 388 <table class="mlabels">
 389   <tr>
 390   <td class="mlabels-left">
 391       <table class="memname">
 392         <tr>
 393           <td class="memname">bool sigc::signal_base::blocked </td>
 394           <td>(</td>
 395           <td class="paramname"></td><td>)</td>
 396           <td> const</td>
 397         </tr>
 398       </table>
 399   </td>
 400   <td class="mlabels-right">
 401 <span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>
 402   </tr>
 403 </table>
 404 </div><div class="memdoc">
 405
 406 <p>Returns whether all slots in the list are blocked. </p>
 407 <dl class="section return"><dt>Returns</dt><dd><code>true</code> if all slots are blocked or the list is empty.</dd></dl>
 408 <dl class="since_2_4"><dt><b><a class="el" href="since_2_4.html#_since_2_4000018">Since libsigc++ 2.4:</a></b></dt><dd></dd></dl>
 409
 410 </div>
 411 </div>
 412 <a id="a17597d66e680d222248c523985f0afd6"></a>
 413 <h2 class="memtitle"><span class="permalink"><a href="#a17597d66e680d222248c523985f0afd6">&#9670;&#160;</a></span>clear()</h2>
 414
 415 <div class="memitem">
 416 <div class="memproto">
 417       <table class="memname">
 418         <tr>
 419           <td class="memname">void sigc::signal_base::clear </td>
 420           <td>(</td>
 421           <td class="paramname"></td><td>)</td>
 422           <td></td>
 423         </tr>
 424       </table>
 425 </div><div class="memdoc">
 426
 427 <p>Empties the list of slots. </p>
 428
 429 </div>
 430 </div>
 431 <a id="a5c89a76a27d69c512f554b841b1bd08a"></a>
 432 <h2 class="memtitle"><span class="permalink"><a href="#a5c89a76a27d69c512f554b841b1bd08a">&#9670;&#160;</a></span>connect() <span class="overload">[1/2]</span></h2>
 433
 434 <div class="memitem">
 435 <div class="memproto">
 436 <table class="mlabels">
 437   <tr>
 438   <td class="mlabels-left">
 439       <table class="memname">
 440         <tr>
 441           <td class="memname"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> sigc::signal_base::connect </td>
 442           <td>(</td>
 443           <td class="paramtype">const <a class="el" href="classsigc_1_1slot__base.html">slot_base</a> &amp;&#160;</td>
 444           <td class="paramname"><em>slot_</em></td><td>)</td>
 445           <td></td>
 446         </tr>
 447       </table>
 448   </td>
 449   <td class="mlabels-right">
 450 <span class="mlabels"><span class="mlabel">protected</span></span>  </td>
 451   </tr>
 452 </table>
 453 </div><div class="memdoc">
 454
 455 <p>Adds a slot at the end of the list of slots. </p>
 456 <p>With <a class="el" href="structsigc_1_1signal__base.html#a5c89a76a27d69c512f554b841b1bd08a" title="Adds a slot at the end of the list of slots.">connect()</a>, slots can also be added during signal emission. In this case, they won't be executed until the next emission occurs. </p><dl class="params"><dt>Parameters</dt><dd>
 457   <table class="params">
 458     <tr><td class="paramname">slot_</td><td>The slot to add to the list of slots. </td></tr>
 459   </table>
 460   </dd>
 461 </dl>
 462 <dl class="section return"><dt>Returns</dt><dd>An iterator pointing to the new slot in the list. </dd></dl>
 463
 464 </div>
 465 </div>
 466 <a id="a50eab6d37728bbbf3beb21d684a72e6c"></a>
 467 <h2 class="memtitle"><span class="permalink"><a href="#a50eab6d37728bbbf3beb21d684a72e6c">&#9670;&#160;</a></span>connect() <span class="overload">[2/2]</span></h2>
 468
 469 <div class="memitem">
 470 <div class="memproto">
 471 <table class="mlabels">
 472   <tr>
 473   <td class="mlabels-left">
 474       <table class="memname">
 475         <tr>
 476           <td class="memname"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> sigc::signal_base::connect </td>
 477           <td>(</td>
 478           <td class="paramtype"><a class="el" href="classsigc_1_1slot__base.html">slot_base</a> &amp;&amp;&#160;</td>
 479           <td class="paramname"><em>slot_</em></td><td>)</td>
 480           <td></td>
 481         </tr>
 482       </table>
 483   </td>
 484   <td class="mlabels-right">
 485 <span class="mlabels"><span class="mlabel">protected</span></span>  </td>
 486   </tr>
 487 </table>
 488 </div><div class="memdoc">
 489
 490 <p>Adds a slot at the end of the list of slots. </p>
 491 <p>With <a class="el" href="structsigc_1_1signal__base.html#a5c89a76a27d69c512f554b841b1bd08a" title="Adds a slot at the end of the list of slots.">connect()</a>, slots can also be added during signal emission. In this case, they won't be executed until the next emission occurs. </p><dl class="params"><dt>Parameters</dt><dd>
 492   <table class="params">
 493     <tr><td class="paramname">slot_</td><td>The slot to add to the list of slots. </td></tr>
 494   </table>
 495   </dd>
 496 </dl>
 497 <dl class="section return"><dt>Returns</dt><dd>An iterator pointing to the new slot in the list.</dd></dl>
 498 <dl class="since_2_8"><dt><b><a class="el" href="since_2_8.html#_since_2_8000011">Since libsigc++ 2.8:</a></b></dt><dd></dd></dl>
 499
 500 </div>
 501 </div>
 502 <a id="a24e7fc4e07ac19cebafe8e3bd71bfe94"></a>
 503 <h2 class="memtitle"><span class="permalink"><a href="#a24e7fc4e07ac19cebafe8e3bd71bfe94">&#9670;&#160;</a></span>empty()</h2>
 504
 505 <div class="memitem">
 506 <div class="memproto">
 507 <table class="mlabels">
 508   <tr>
 509   <td class="mlabels-left">
 510       <table class="memname">
 511         <tr>
 512           <td class="memname">bool sigc::signal_base::empty </td>
 513           <td>(</td>
 514           <td class="paramname"></td><td>)</td>
 515           <td> const</td>
 516         </tr>
 517       </table>
 518   </td>
 519   <td class="mlabels-right">
 520 <span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">noexcept</span></span>  </td>
 521   </tr>
 522 </table>
 523 </div><div class="memdoc">
 524
 525 <p>Returns whether the list of slots is empty. </p>
 526 <dl class="section return"><dt>Returns</dt><dd><code>true</code> if the list of slots is empty. </dd></dl>
 527
 528 </div>
 529 </div>
 530 <a id="a21efc57eea29c3139855909ad4807984"></a>
 531 <h2 class="memtitle"><span class="permalink"><a href="#a21efc57eea29c3139855909ad4807984">&#9670;&#160;</a></span>erase()</h2>
 532
 533 <div class="memitem">
 534 <div class="memproto">
 535 <table class="mlabels">
 536   <tr>
 537   <td class="mlabels-left">
 538       <table class="memname">
 539         <tr>
 540           <td class="memname"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> sigc::signal_base::erase </td>
 541           <td>(</td>
 542           <td class="paramtype"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a>&#160;</td>
 543           <td class="paramname"><em>i</em></td><td>)</td>
 544           <td></td>
 545         </tr>
 546       </table>
 547   </td>
 548   <td class="mlabels-right">
 549 <span class="mlabels"><span class="mlabel">protected</span></span>  </td>
 550   </tr>
 551 </table>
 552 </div><div class="memdoc">
 553
 554 <p>Removes the slot at the given position from the list of slots. </p>
 555 <p>Note that this function does not work during signal emission! </p><dl class="params"><dt>Parameters</dt><dd>
 556   <table class="params">
 557     <tr><td class="paramname">i</td><td>An iterator pointing to the slot to be removed. </td></tr>
 558   </table>
 559   </dd>
 560 </dl>
 561 <dl class="section return"><dt>Returns</dt><dd>An iterator pointing to the slot in the list after the one removed. </dd></dl>
 562
 563 </div>
 564 </div>
 565 <a id="ab0527d817989f2386556ce164c3adfa7"></a>
 566 <h2 class="memtitle"><span class="permalink"><a href="#ab0527d817989f2386556ce164c3adfa7">&#9670;&#160;</a></span>impl()</h2>
 567
 568 <div class="memitem">
 569 <div class="memproto">
 570 <table class="mlabels">
 571   <tr>
 572   <td class="mlabels-left">
 573       <table class="memname">
 574         <tr>
 575           <td class="memname">internal::signal_impl* sigc::signal_base::impl </td>
 576           <td>(</td>
 577           <td class="paramname"></td><td>)</td>
 578           <td> const</td>
 579         </tr>
 580       </table>
 581   </td>
 582   <td class="mlabels-right">
 583 <span class="mlabels"><span class="mlabel">protected</span></span>  </td>
 584   </tr>
 585 </table>
 586 </div><div class="memdoc">
 587
 588 <p>Returns the signal_impl object encapsulating the list of slots. </p>
 589 <dl class="section return"><dt>Returns</dt><dd>The signal_impl object encapsulating the list of slots. </dd></dl>
 590
 591 </div>
 592 </div>
 593 <a id="a87da23ad801faa9e2b6b4be2a747e757"></a>
 594 <h2 class="memtitle"><span class="permalink"><a href="#a87da23ad801faa9e2b6b4be2a747e757">&#9670;&#160;</a></span>insert() <span class="overload">[1/2]</span></h2>
 595
 596 <div class="memitem">
 597 <div class="memproto">
 598 <table class="mlabels">
 599   <tr>
 600   <td class="mlabels-left">
 601       <table class="memname">
 602         <tr>
 603           <td class="memname"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> sigc::signal_base::insert </td>
 604           <td>(</td>
 605           <td class="paramtype"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a>&#160;</td>
 606           <td class="paramname"><em>i</em>, </td>
 607         </tr>
 608         <tr>
 609           <td class="paramkey"></td>
 610           <td></td>
 611           <td class="paramtype">const <a class="el" href="classsigc_1_1slot__base.html">slot_base</a> &amp;&#160;</td>
 612           <td class="paramname"><em>slot_</em>&#160;</td>
 613         </tr>
 614         <tr>
 615           <td></td>
 616           <td>)</td>
 617           <td></td><td></td>
 618         </tr>
 619       </table>
 620   </td>
 621   <td class="mlabels-right">
 622 <span class="mlabels"><span class="mlabel">protected</span></span>  </td>
 623   </tr>
 624 </table>
 625 </div><div class="memdoc">
 626
 627 <p>Adds a slot at the given position into the list of slots. </p>
 628 <p>Note that this function does not work during signal emission! </p><dl class="params"><dt>Parameters</dt><dd>
 629   <table class="params">
 630     <tr><td class="paramname">i</td><td>An iterator indicating the position where <em>slot_</em> should be inserted. </td></tr>
 631     <tr><td class="paramname">slot_</td><td>The slot to add to the list of slots. </td></tr>
 632   </table>
 633   </dd>
 634 </dl>
 635 <dl class="section return"><dt>Returns</dt><dd>An iterator pointing to the new slot in the list. </dd></dl>
 636
 637 </div>
 638 </div>
 639 <a id="aa80c33868910139dd2f511afcc31b687"></a>
 640 <h2 class="memtitle"><span class="permalink"><a href="#aa80c33868910139dd2f511afcc31b687">&#9670;&#160;</a></span>insert() <span class="overload">[2/2]</span></h2>
 641
 642 <div class="memitem">
 643 <div class="memproto">
 644 <table class="mlabels">
 645   <tr>
 646   <td class="mlabels-left">
 647       <table class="memname">
 648         <tr>
 649           <td class="memname"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> sigc::signal_base::insert </td>
 650           <td>(</td>
 651           <td class="paramtype"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a>&#160;</td>
 652           <td class="paramname"><em>i</em>, </td>
 653         </tr>
 654         <tr>
 655           <td class="paramkey"></td>
 656           <td></td>
 657           <td class="paramtype"><a class="el" href="classsigc_1_1slot__base.html">slot_base</a> &amp;&amp;&#160;</td>
 658           <td class="paramname"><em>slot_</em>&#160;</td>
 659         </tr>
 660         <tr>
 661           <td></td>
 662           <td>)</td>
 663           <td></td><td></td>
 664         </tr>
 665       </table>
 666   </td>
 667   <td class="mlabels-right">
 668 <span class="mlabels"><span class="mlabel">protected</span></span>  </td>
 669   </tr>
 670 </table>
 671 </div><div class="memdoc">
 672
 673 <p>Adds a slot at the given position into the list of slots. </p>
 674 <p>Note that this function does not work during signal emission! </p><dl class="params"><dt>Parameters</dt><dd>
 675   <table class="params">
 676     <tr><td class="paramname">i</td><td>An iterator indicating the position where <em>slot_</em> should be inserted. </td></tr>
 677     <tr><td class="paramname">slot_</td><td>The slot to add to the list of slots. </td></tr>
 678   </table>
 679   </dd>
 680 </dl>
 681 <dl class="section return"><dt>Returns</dt><dd>An iterator pointing to the new slot in the list.</dd></dl>
 682 <dl class="since_2_8"><dt><b><a class="el" href="since_2_8.html#_since_2_8000012">Since libsigc++ 2.8:</a></b></dt><dd></dd></dl>
 683
 684 </div>
 685 </div>
 686 <a id="a90b36a7b33e107ce0af0de895e0df286"></a>
 687 <h2 class="memtitle"><span class="permalink"><a href="#a90b36a7b33e107ce0af0de895e0df286">&#9670;&#160;</a></span>operator=() <span class="overload">[1/2]</span></h2>
 688
 689 <div class="memitem">
 690 <div class="memproto">
 691       <table class="memname">
 692         <tr>
 693           <td class="memname"><a class="el" href="structsigc_1_1signal__base.html">signal_base</a>&amp; sigc::signal_base::operator= </td>
 694           <td>(</td>
 695           <td class="paramtype">const <a class="el" href="structsigc_1_1signal__base.html">signal_base</a> &amp;&#160;</td>
 696           <td class="paramname"><em>src</em></td><td>)</td>
 697           <td></td>
 698         </tr>
 699       </table>
 700 </div><div class="memdoc">
 701
 702 </div>
 703 </div>
 704 <a id="a277a34edf44207fb4784807eac5872c6"></a>
 705 <h2 class="memtitle"><span class="permalink"><a href="#a277a34edf44207fb4784807eac5872c6">&#9670;&#160;</a></span>operator=() <span class="overload">[2/2]</span></h2>
 706
 707 <div class="memitem">
 708 <div class="memproto">
 709       <table class="memname">
 710         <tr>
 711           <td class="memname"><a class="el" href="structsigc_1_1signal__base.html">signal_base</a>&amp; sigc::signal_base::operator= </td>
 712           <td>(</td>
 713           <td class="paramtype"><a class="el" href="structsigc_1_1signal__base.html">signal_base</a> &amp;&amp;&#160;</td>
 714           <td class="paramname"><em>src</em></td><td>)</td>
 715           <td></td>
 716         </tr>
 717       </table>
 718 </div><div class="memdoc">
 719
 720 </div>
 721 </div>
 722 <a id="a0725416f747d6db3c57fa318a9f887a8"></a>
 723 <h2 class="memtitle"><span class="permalink"><a href="#a0725416f747d6db3c57fa318a9f887a8">&#9670;&#160;</a></span>size()</h2>
 724
 725 <div class="memitem">
 726 <div class="memproto">
 727 <table class="mlabels">
 728   <tr>
 729   <td class="mlabels-left">
 730       <table class="memname">
 731         <tr>
 732           <td class="memname"><a class="el" href="structsigc_1_1signal__base.html#aa60e22abd088b6cde2dd50fb3f228aa4">size_type</a> sigc::signal_base::size </td>
 733           <td>(</td>
 734           <td class="paramname"></td><td>)</td>
 735           <td> const</td>
 736         </tr>
 737       </table>
 738   </td>
 739   <td class="mlabels-right">
 740 <span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>
 741   </tr>
 742 </table>
 743 </div><div class="memdoc">
 744
 745 <p>Returns the number of slots in the list. </p>
 746 <dl class="section return"><dt>Returns</dt><dd>The number of slots in the list. </dd></dl>
 747
 748 </div>
 749 </div>
 750 <a id="aebb7ac69ea745cd60c0505f8d553d27f"></a>
 751 <h2 class="memtitle"><span class="permalink"><a href="#aebb7ac69ea745cd60c0505f8d553d27f">&#9670;&#160;</a></span>unblock()</h2>
 752
 753 <div class="memitem">
 754 <div class="memproto">
 755 <table class="mlabels">
 756   <tr>
 757   <td class="mlabels-left">
 758       <table class="memname">
 759         <tr>
 760           <td class="memname">void sigc::signal_base::unblock </td>
 761           <td>(</td>
 762           <td class="paramname"></td><td>)</td>
 763           <td></td>
 764         </tr>
 765       </table>
 766   </td>
 767   <td class="mlabels-right">
 768 <span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>
 769   </tr>
 770 </table>
 771 </div><div class="memdoc">
 772
 773 <p>Unsets the blocking state of all slots in the list. </p>
 774 <dl class="since_2_4"><dt><b><a class="el" href="since_2_4.html#_since_2_4000020">Since libsigc++ 2.4:</a></b></dt><dd></dd></dl>
 775
 776 </div>
 777 </div>
 778 <h2 class="groupheader">Member Data Documentation</h2>
 779 <a id="a747d448c28fd256ef580d165eb69f17a"></a>
 780 <h2 class="memtitle"><span class="permalink"><a href="#a747d448c28fd256ef580d165eb69f17a">&#9670;&#160;</a></span>impl_</h2>
 781
 782 <div class="memitem">
 783 <div class="memproto">
 784 <table class="mlabels">
 785   <tr>
 786   <td class="mlabels-left">
 787       <table class="memname">
 788         <tr>
 789           <td class="memname">internal::signal_impl* sigc::signal_base::impl_</td>
 790         </tr>
 791       </table>
 792   </td>
 793   <td class="mlabels-right">
 794 <span class="mlabels"><span class="mlabel">mutable</span><span class="mlabel">protected</span></span>  </td>
 795   </tr>
 796 </table>
 797 </div><div class="memdoc">
 798
 799 <p>The signal_impl object encapsulating the slot list. </p>
 800
 801 </div>
 802 </div>
 803 </div><!-- contents -->
 804 <!-- start footer part -->
 805 <hr class="footer"/><address class="footer"><small>
 806 Generated on Fri Feb 11 2022 15:40:59 for libsigc++ by&#160;<a href="https://www.doxygen.org/index.html"><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.9.1
 807 </small></address>
 808 </body>
 809 </html>