docs/reference/html/structsigc_1_1connection.html

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  21    <div id="projectname">libsigc++
  22    &#160;<span id="projectnumber">2.99.2</span>
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  50 <li class="navelem"><a class="el" href="namespacesigc.html">sigc</a></li><li class="navelem"><a class="el" href="structsigc_1_1connection.html">connection</a></li>  </ul>
  51 </div>
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  55 <a href="#pub-methods">Public Member Functions</a> &#124;
  56 <a href="#pub-static-methods">Static Public Member Functions</a> &#124;
  57 <a href="structsigc_1_1connection-members.html">List of all members</a>  </div>
  58   <div class="headertitle">
  59 <div class="title">sigc::connection Struct Reference<div class="ingroups"><a class="el" href="group__signal.html">Signals</a></div></div>  </div>
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  61 <div class="contents">
  62
  63 <p>Convinience class for safe disconnection.
  64  <a href="structsigc_1_1connection.html#details">More...</a></p>
  65
  66 <p><code>#include &lt;sigc++/connection.h&gt;</code></p>
  67 <div class="dynheader">
  68 Inheritance diagram for sigc::connection:</div>
  69 <div class="dyncontent">
  70 <div class="center"><img src="structsigc_1_1connection__inherit__graph.png" border="0" usemap="#sigc_1_1connection_inherit__map" alt="Inheritance graph"/></div>
  71 <map name="sigc_1_1connection_inherit__map" id="sigc_1_1connection_inherit__map">
  72 <area shape="rect" id="node2" href="structsigc_1_1notifiable.html" title="sigc::notifiable" alt="" coords="11,5,125,32"/></map>
  73 <center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>
  74 <table class="memberdecls">
  75 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
  76 Public Member Functions</h2></td></tr>
  77 <tr class="memitem:a95f80dbbf10fde0b851d78ec12cc2629"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a95f80dbbf10fde0b851d78ec12cc2629">connection</a> () noexcept</td></tr>
  78 <tr class="memdesc:a95f80dbbf10fde0b851d78ec12cc2629"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructs an empty connection object.  <a href="#a95f80dbbf10fde0b851d78ec12cc2629">More...</a><br /></td></tr>
  79 <tr class="separator:a95f80dbbf10fde0b851d78ec12cc2629"><td class="memSeparator" colspan="2">&#160;</td></tr>
  80 <tr class="memitem:ad13d5e3331cc9b1494e0edb8fa37fdba"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#ad13d5e3331cc9b1494e0edb8fa37fdba">connection</a> (const <a class="el" href="structsigc_1_1connection.html">connection</a>&amp; c)</td></tr>
  81 <tr class="memdesc:ad13d5e3331cc9b1494e0edb8fa37fdba"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructs a connection object copying an existing one.  <a href="#ad13d5e3331cc9b1494e0edb8fa37fdba">More...</a><br /></td></tr>
  82 <tr class="separator:ad13d5e3331cc9b1494e0edb8fa37fdba"><td class="memSeparator" colspan="2">&#160;</td></tr>
  83 <tr class="memitem:ac8847ae94e0b05bed6c81f54f58deef3"><td class="memTemplParams" colspan="2">template&lt;typename T_slot &gt; </td></tr>
  84 <tr class="memitem:ac8847ae94e0b05bed6c81f54f58deef3"><td class="memTemplItemLeft" align="right" valign="top">&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#ac8847ae94e0b05bed6c81f54f58deef3">connection</a> (const <a class="el" href="structsigc_1_1slot__iterator.html">slot_iterator</a>&lt; T_slot &gt;&amp; it)</td></tr>
  85 <tr class="memdesc:ac8847ae94e0b05bed6c81f54f58deef3"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructs a connection object from a slot list iterator.  <a href="#ac8847ae94e0b05bed6c81f54f58deef3">More...</a><br /></td></tr>
  86 <tr class="separator:ac8847ae94e0b05bed6c81f54f58deef3"><td class="memSeparator" colspan="2">&#160;</td></tr>
  87 <tr class="memitem:a124709de26781e5ffcf8bbb5dcd621ed"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a124709de26781e5ffcf8bbb5dcd621ed">connection</a> (<a class="el" href="classsigc_1_1slot__base.html">slot_base</a>&amp; sl)</td></tr>
  88 <tr class="memdesc:a124709de26781e5ffcf8bbb5dcd621ed"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructs a connection object from a slot object.  <a href="#a124709de26781e5ffcf8bbb5dcd621ed">More...</a><br /></td></tr>
  89 <tr class="separator:a124709de26781e5ffcf8bbb5dcd621ed"><td class="memSeparator" colspan="2">&#160;</td></tr>
  90 <tr class="memitem:a99678ccb2be5c20719f37e469416578a"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a99678ccb2be5c20719f37e469416578a">~connection</a> ()</td></tr>
  91 <tr class="separator:a99678ccb2be5c20719f37e469416578a"><td class="memSeparator" colspan="2">&#160;</td></tr>
  92 <tr class="memitem:a581ae4f2b708cb6be7b081557864d6ec"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a581ae4f2b708cb6be7b081557864d6ec">block</a> (bool should_block=true) noexcept</td></tr>
  93 <tr class="memdesc:a581ae4f2b708cb6be7b081557864d6ec"><td class="mdescLeft">&#160;</td><td class="mdescRight">Sets or unsets the blocking state of this connection.  <a href="#a581ae4f2b708cb6be7b081557864d6ec">More...</a><br /></td></tr>
  94 <tr class="separator:a581ae4f2b708cb6be7b081557864d6ec"><td class="memSeparator" colspan="2">&#160;</td></tr>
  95 <tr class="memitem:a7c86964aa4b0f339db5842e6c7e604f3"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a7c86964aa4b0f339db5842e6c7e604f3">blocked</a> () const noexcept</td></tr>
  96 <tr class="memdesc:a7c86964aa4b0f339db5842e6c7e604f3"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns whether the connection is blocked.  <a href="#a7c86964aa4b0f339db5842e6c7e604f3">More...</a><br /></td></tr>
  97 <tr class="separator:a7c86964aa4b0f339db5842e6c7e604f3"><td class="memSeparator" colspan="2">&#160;</td></tr>
  98 <tr class="memitem:a307b5df56439539be66f92d6e39f0bce"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a307b5df56439539be66f92d6e39f0bce">connected</a> () const noexcept</td></tr>
  99 <tr class="memdesc:a307b5df56439539be66f92d6e39f0bce"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns whether the connection is still active.  <a href="#a307b5df56439539be66f92d6e39f0bce">More...</a><br /></td></tr>
 100 <tr class="separator:a307b5df56439539be66f92d6e39f0bce"><td class="memSeparator" colspan="2">&#160;</td></tr>
 101 <tr class="memitem:a0452bd182a61650d14a9664d6297ed1b"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a0452bd182a61650d14a9664d6297ed1b">disconnect</a> ()</td></tr>
 102 <tr class="memdesc:a0452bd182a61650d14a9664d6297ed1b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Disconnects the referred slot.  <a href="#a0452bd182a61650d14a9664d6297ed1b">More...</a><br /></td></tr>
 103 <tr class="separator:a0452bd182a61650d14a9664d6297ed1b"><td class="memSeparator" colspan="2">&#160;</td></tr>
 104 <tr class="memitem:a810bdde9fbe7ad10bf9d578eebf929de"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a810bdde9fbe7ad10bf9d578eebf929de">empty</a> () const noexcept</td></tr>
 105 <tr class="memdesc:a810bdde9fbe7ad10bf9d578eebf929de"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns whether the connection is still active.  <a href="#a810bdde9fbe7ad10bf9d578eebf929de">More...</a><br /></td></tr>
 106 <tr class="separator:a810bdde9fbe7ad10bf9d578eebf929de"><td class="memSeparator" colspan="2">&#160;</td></tr>
 107 <tr class="memitem:a5419e6fc689df523283e0182189c33b0"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a5419e6fc689df523283e0182189c33b0">operator bool</a> () const noexcept</td></tr>
 108 <tr class="memdesc:a5419e6fc689df523283e0182189c33b0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns whether the connection is still active.  <a href="#a5419e6fc689df523283e0182189c33b0">More...</a><br /></td></tr>
 109 <tr class="separator:a5419e6fc689df523283e0182189c33b0"><td class="memSeparator" colspan="2">&#160;</td></tr>
 110 <tr class="memitem:a016094b53bafdc9ce593febb68cb00a5"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1connection.html">connection</a>&amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a016094b53bafdc9ce593febb68cb00a5">operator=</a> (const <a class="el" href="structsigc_1_1connection.html">connection</a>&amp; c)</td></tr>
 111 <tr class="memdesc:a016094b53bafdc9ce593febb68cb00a5"><td class="mdescLeft">&#160;</td><td class="mdescRight">Overrides this connection object copying another one.  <a href="#a016094b53bafdc9ce593febb68cb00a5">More...</a><br /></td></tr>
 112 <tr class="separator:a016094b53bafdc9ce593febb68cb00a5"><td class="memSeparator" colspan="2">&#160;</td></tr>
 113 <tr class="memitem:adee4ffd4b1669b4726fd9afc36330c14"><td class="memTemplParams" colspan="2">template&lt;typename T_slot &gt; </td></tr>
 114 <tr class="memitem:adee4ffd4b1669b4726fd9afc36330c14"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1connection.html">connection</a>&amp;&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#adee4ffd4b1669b4726fd9afc36330c14">operator=</a> (const <a class="el" href="structsigc_1_1slot__iterator.html">slot_iterator</a>&lt; T_slot &gt;&amp; it)</td></tr>
 115 <tr class="memdesc:adee4ffd4b1669b4726fd9afc36330c14"><td class="mdescLeft">&#160;</td><td class="mdescRight">Overrides this connection object with another slot list iterator.  <a href="#adee4ffd4b1669b4726fd9afc36330c14">More...</a><br /></td></tr>
 116 <tr class="separator:adee4ffd4b1669b4726fd9afc36330c14"><td class="memSeparator" colspan="2">&#160;</td></tr>
 117 <tr class="memitem:a15abcbfa76f1e5d8601cf4ad4176ed50"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a15abcbfa76f1e5d8601cf4ad4176ed50">unblock</a> () noexcept</td></tr>
 118 <tr class="memdesc:a15abcbfa76f1e5d8601cf4ad4176ed50"><td class="mdescLeft">&#160;</td><td class="mdescRight">Unsets the blocking state of this connection.  <a href="#a15abcbfa76f1e5d8601cf4ad4176ed50">More...</a><br /></td></tr>
 119 <tr class="separator:a15abcbfa76f1e5d8601cf4ad4176ed50"><td class="memSeparator" colspan="2">&#160;</td></tr>
 120 </table><table class="memberdecls">
 121 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
 122 Static Public Member Functions</h2></td></tr>
 123 <tr class="memitem:a4b542c439e7f090f17eaf13e270824fb"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a4b542c439e7f090f17eaf13e270824fb">notify</a> (<a class="el" href="structsigc_1_1notifiable.html">notifiable</a>* data)</td></tr>
 124 <tr class="memdesc:a4b542c439e7f090f17eaf13e270824fb"><td class="mdescLeft">&#160;</td><td class="mdescRight">Callback that is executed when the referred slot is destroyed.  <a href="#a4b542c439e7f090f17eaf13e270824fb">More...</a><br /></td></tr>
 125 <tr class="separator:a4b542c439e7f090f17eaf13e270824fb"><td class="memSeparator" colspan="2">&#160;</td></tr>
 126 </table><table class="memberdecls">
 127 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="inherited"></a>
 128 Additional Inherited Members</h2></td></tr>
 129 <tr class="inherit_header pub_types_structsigc_1_1notifiable"><td colspan="2" onclick="javascript:toggleInherit('pub_types_structsigc_1_1notifiable')"><img src="closed.png" alt="-"/>&#160;Public Types inherited from <a class="el" href="structsigc_1_1notifiable.html">sigc::notifiable</a></td></tr>
 130 <tr class="memitem:a71455cae4b10ff1277e68a1729e1b8c4 inherit pub_types_structsigc_1_1notifiable"><td class="memItemLeft" align="right" valign="top">using&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1notifiable.html#a71455cae4b10ff1277e68a1729e1b8c4">func_destroy_notify</a> = internal::func_destroy_notify</td></tr>
 131 <tr class="separator:a71455cae4b10ff1277e68a1729e1b8c4 inherit pub_types_structsigc_1_1notifiable"><td class="memSeparator" colspan="2">&#160;</td></tr>
 132 </table>
 133 <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
 134 <div class="textblock"><p>Convinience class for safe disconnection. </p>
 135 <p>Iterators must not be used beyond the lifetime of the list they work on. A connection object can be created from a slot list iterator and may safely be used to disconnect the referred slot at any time (<a class="el" href="structsigc_1_1connection.html#a0452bd182a61650d14a9664d6297ed1b" title="Disconnects the referred slot. ">disconnect()</a>). If the slot has already been destroyed, <a class="el" href="structsigc_1_1connection.html#a0452bd182a61650d14a9664d6297ed1b" title="Disconnects the referred slot. ">disconnect()</a> does nothing. <a class="el" href="structsigc_1_1connection.html#a810bdde9fbe7ad10bf9d578eebf929de" title="Returns whether the connection is still active. ">empty()</a> or operator bool() can be used to test whether the connection is still active. The connection can be blocked (<a class="el" href="structsigc_1_1connection.html#a581ae4f2b708cb6be7b081557864d6ec" title="Sets or unsets the blocking state of this connection. ">block()</a>, <a class="el" href="structsigc_1_1connection.html#a15abcbfa76f1e5d8601cf4ad4176ed50" title="Unsets the blocking state of this connection. ">unblock()</a>).</p>
 136 <p>This is possible because the connection object gets notified when the referred slot dies (<a class="el" href="structsigc_1_1connection.html#a4b542c439e7f090f17eaf13e270824fb" title="Callback that is executed when the referred slot is destroyed. ">notify()</a>). </p>
 137 </div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
 138 <a class="anchor" id="a95f80dbbf10fde0b851d78ec12cc2629"></a>
 139 <div class="memitem">
 140 <div class="memproto">
 141 <table class="mlabels">
 142   <tr>
 143   <td class="mlabels-left">
 144       <table class="memname">
 145         <tr>
 146           <td class="memname">sigc::connection::connection </td>
 147           <td>(</td>
 148           <td class="paramname"></td><td>)</td>
 149           <td></td>
 150         </tr>
 151       </table>
 152   </td>
 153   <td class="mlabels-right">
 154 <span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>
 155   </tr>
 156 </table>
 157 </div><div class="memdoc">
 158
 159 <p>Constructs an empty connection object. </p>
 160
 161 </div>
 162 </div>
 163 <a class="anchor" id="ad13d5e3331cc9b1494e0edb8fa37fdba"></a>
 164 <div class="memitem">
 165 <div class="memproto">
 166       <table class="memname">
 167         <tr>
 168           <td class="memname">sigc::connection::connection </td>
 169           <td>(</td>
 170           <td class="paramtype">const <a class="el" href="structsigc_1_1connection.html">connection</a>&amp;&#160;</td>
 171           <td class="paramname"><em>c</em></td><td>)</td>
 172           <td></td>
 173         </tr>
 174       </table>
 175 </div><div class="memdoc">
 176
 177 <p>Constructs a connection object copying an existing one. </p>
 178 <dl class="params"><dt>Parameters</dt><dd>
 179   <table class="params">
 180     <tr><td class="paramname">c</td><td>The connection object to make a copy from. </td></tr>
 181   </table>
 182   </dd>
 183 </dl>
 184
 185 </div>
 186 </div>
 187 <a class="anchor" id="ac8847ae94e0b05bed6c81f54f58deef3"></a>
 188 <div class="memitem">
 189 <div class="memproto">
 190 <div class="memtemplate">
 191 template &lt;typename T_slot &gt; </div>
 192 <table class="mlabels">
 193   <tr>
 194   <td class="mlabels-left">
 195       <table class="memname">
 196         <tr>
 197           <td class="memname">sigc::connection::connection </td>
 198           <td>(</td>
 199           <td class="paramtype">const <a class="el" href="structsigc_1_1slot__iterator.html">slot_iterator</a>&lt; T_slot &gt;&amp;&#160;</td>
 200           <td class="paramname"><em>it</em></td><td>)</td>
 201           <td></td>
 202         </tr>
 203       </table>
 204   </td>
 205   <td class="mlabels-right">
 206 <span class="mlabels"><span class="mlabel">inline</span></span>  </td>
 207   </tr>
 208 </table>
 209 </div><div class="memdoc">
 210
 211 <p>Constructs a connection object from a slot list iterator. </p>
 212 <dl class="params"><dt>Parameters</dt><dd>
 213   <table class="params">
 214     <tr><td class="paramname">it</td><td>The slot list iterator to take the slot from. </td></tr>
 215   </table>
 216   </dd>
 217 </dl>
 218
 219 </div>
 220 </div>
 221 <a class="anchor" id="a124709de26781e5ffcf8bbb5dcd621ed"></a>
 222 <div class="memitem">
 223 <div class="memproto">
 224 <table class="mlabels">
 225   <tr>
 226   <td class="mlabels-left">
 227       <table class="memname">
 228         <tr>
 229           <td class="memname">sigc::connection::connection </td>
 230           <td>(</td>
 231           <td class="paramtype"><a class="el" href="classsigc_1_1slot__base.html">slot_base</a>&amp;&#160;</td>
 232           <td class="paramname"><em>sl</em></td><td>)</td>
 233           <td></td>
 234         </tr>
 235       </table>
 236   </td>
 237   <td class="mlabels-right">
 238 <span class="mlabels"><span class="mlabel">explicit</span></span>  </td>
 239   </tr>
 240 </table>
 241 </div><div class="memdoc">
 242
 243 <p>Constructs a connection object from a slot object. </p>
 244 <p>This is only useful if you create your own slot list. </p><dl class="params"><dt>Parameters</dt><dd>
 245   <table class="params">
 246     <tr><td class="paramname">sl</td><td>The slot to operate on. </td></tr>
 247   </table>
 248   </dd>
 249 </dl>
 250
 251 </div>
 252 </div>
 253 <a class="anchor" id="a99678ccb2be5c20719f37e469416578a"></a>
 254 <div class="memitem">
 255 <div class="memproto">
 256       <table class="memname">
 257         <tr>
 258           <td class="memname">sigc::connection::~connection </td>
 259           <td>(</td>
 260           <td class="paramname"></td><td>)</td>
 261           <td></td>
 262         </tr>
 263       </table>
 264 </div><div class="memdoc">
 265
 266 </div>
 267 </div>
 268 <h2 class="groupheader">Member Function Documentation</h2>
 269 <a class="anchor" id="a581ae4f2b708cb6be7b081557864d6ec"></a>
 270 <div class="memitem">
 271 <div class="memproto">
 272 <table class="mlabels">
 273   <tr>
 274   <td class="mlabels-left">
 275       <table class="memname">
 276         <tr>
 277           <td class="memname">bool sigc::connection::block </td>
 278           <td>(</td>
 279           <td class="paramtype">bool&#160;</td>
 280           <td class="paramname"><em>should_block</em> = <code>true</code></td><td>)</td>
 281           <td></td>
 282         </tr>
 283       </table>
 284   </td>
 285   <td class="mlabels-right">
 286 <span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>
 287   </tr>
 288 </table>
 289 </div><div class="memdoc">
 290
 291 <p>Sets or unsets the blocking state of this connection. </p>
 292 <p>See <a class="el" href="classsigc_1_1slot__base.html#a657a8473164c963a5ca4828c88121bb9" title="Sets the blocking state. ">slot_base::block()</a> for details. </p><dl class="params"><dt>Parameters</dt><dd>
 293   <table class="params">
 294     <tr><td class="paramname">should_block</td><td>Indicates whether the blocking state should be set or unset. </td></tr>
 295   </table>
 296   </dd>
 297 </dl>
 298 <dl class="section return"><dt>Returns</dt><dd><code>true</code> if the connection has been in blocking state before. </dd></dl>
 299
 300 </div>
 301 </div>
 302 <a class="anchor" id="a7c86964aa4b0f339db5842e6c7e604f3"></a>
 303 <div class="memitem">
 304 <div class="memproto">
 305 <table class="mlabels">
 306   <tr>
 307   <td class="mlabels-left">
 308       <table class="memname">
 309         <tr>
 310           <td class="memname">bool sigc::connection::blocked </td>
 311           <td>(</td>
 312           <td class="paramname"></td><td>)</td>
 313           <td> const</td>
 314         </tr>
 315       </table>
 316   </td>
 317   <td class="mlabels-right">
 318 <span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>
 319   </tr>
 320 </table>
 321 </div><div class="memdoc">
 322
 323 <p>Returns whether the connection is blocked. </p>
 324 <dl class="section return"><dt>Returns</dt><dd><code>true</code> if the connection is blocked. </dd></dl>
 325
 326 </div>
 327 </div>
 328 <a class="anchor" id="a307b5df56439539be66f92d6e39f0bce"></a>
 329 <div class="memitem">
 330 <div class="memproto">
 331 <table class="mlabels">
 332   <tr>
 333   <td class="mlabels-left">
 334       <table class="memname">
 335         <tr>
 336           <td class="memname">bool sigc::connection::connected </td>
 337           <td>(</td>
 338           <td class="paramname"></td><td>)</td>
 339           <td> const</td>
 340         </tr>
 341       </table>
 342   </td>
 343   <td class="mlabels-right">
 344 <span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>
 345   </tr>
 346 </table>
 347 </div><div class="memdoc">
 348
 349 <p>Returns whether the connection is still active. </p>
 350 <dl class="section return"><dt>Returns</dt><dd><code>true</code> if the connection is still active. </dd></dl>
 351
 352 </div>
 353 </div>
 354 <a class="anchor" id="a0452bd182a61650d14a9664d6297ed1b"></a>
 355 <div class="memitem">
 356 <div class="memproto">
 357       <table class="memname">
 358         <tr>
 359           <td class="memname">void sigc::connection::disconnect </td>
 360           <td>(</td>
 361           <td class="paramname"></td><td>)</td>
 362           <td></td>
 363         </tr>
 364       </table>
 365 </div><div class="memdoc">
 366
 367 <p>Disconnects the referred slot. </p>
 368
 369 </div>
 370 </div>
 371 <a class="anchor" id="a810bdde9fbe7ad10bf9d578eebf929de"></a>
 372 <div class="memitem">
 373 <div class="memproto">
 374 <table class="mlabels">
 375   <tr>
 376   <td class="mlabels-left">
 377       <table class="memname">
 378         <tr>
 379           <td class="memname">bool sigc::connection::empty </td>
 380           <td>(</td>
 381           <td class="paramname"></td><td>)</td>
 382           <td> const</td>
 383         </tr>
 384       </table>
 385   </td>
 386   <td class="mlabels-right">
 387 <span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>
 388   </tr>
 389 </table>
 390 </div><div class="memdoc">
 391
 392 <p>Returns whether the connection is still active. </p>
 393 <dl class="section return"><dt>Returns</dt><dd><code>false</code> if the connection is still active. </dd></dl>
 394
 395 </div>
 396 </div>
 397 <a class="anchor" id="a4b542c439e7f090f17eaf13e270824fb"></a>
 398 <div class="memitem">
 399 <div class="memproto">
 400 <table class="mlabels">
 401   <tr>
 402   <td class="mlabels-left">
 403       <table class="memname">
 404         <tr>
 405           <td class="memname">static void sigc::connection::notify </td>
 406           <td>(</td>
 407           <td class="paramtype"><a class="el" href="structsigc_1_1notifiable.html">notifiable</a>*&#160;</td>
 408           <td class="paramname"><em>data</em></td><td>)</td>
 409           <td></td>
 410         </tr>
 411       </table>
 412   </td>
 413   <td class="mlabels-right">
 414 <span class="mlabels"><span class="mlabel">static</span></span>  </td>
 415   </tr>
 416 </table>
 417 </div><div class="memdoc">
 418
 419 <p>Callback that is executed when the referred slot is destroyed. </p>
 420 <dl class="params"><dt>Parameters</dt><dd>
 421   <table class="params">
 422     <tr><td class="paramname">data</td><td>The connection object notified (<code>this</code>). </td></tr>
 423   </table>
 424   </dd>
 425 </dl>
 426
 427 </div>
 428 </div>
 429 <a class="anchor" id="a5419e6fc689df523283e0182189c33b0"></a>
 430 <div class="memitem">
 431 <div class="memproto">
 432 <table class="mlabels">
 433   <tr>
 434   <td class="mlabels-left">
 435       <table class="memname">
 436         <tr>
 437           <td class="memname">sigc::connection::operator bool </td>
 438           <td>(</td>
 439           <td class="paramname"></td><td>)</td>
 440           <td> const</td>
 441         </tr>
 442       </table>
 443   </td>
 444   <td class="mlabels-right">
 445 <span class="mlabels"><span class="mlabel">explicit</span><span class="mlabel">noexcept</span></span>  </td>
 446   </tr>
 447 </table>
 448 </div><div class="memdoc">
 449
 450 <p>Returns whether the connection is still active. </p>
 451 <dl class="section return"><dt>Returns</dt><dd><code>true</code> if the connection is still active. </dd></dl>
 452
 453 </div>
 454 </div>
 455 <a class="anchor" id="a016094b53bafdc9ce593febb68cb00a5"></a>
 456 <div class="memitem">
 457 <div class="memproto">
 458       <table class="memname">
 459         <tr>
 460           <td class="memname"><a class="el" href="structsigc_1_1connection.html">connection</a>&amp; sigc::connection::operator= </td>
 461           <td>(</td>
 462           <td class="paramtype">const <a class="el" href="structsigc_1_1connection.html">connection</a>&amp;&#160;</td>
 463           <td class="paramname"><em>c</em></td><td>)</td>
 464           <td></td>
 465         </tr>
 466       </table>
 467 </div><div class="memdoc">
 468
 469 <p>Overrides this connection object copying another one. </p>
 470 <dl class="params"><dt>Parameters</dt><dd>
 471   <table class="params">
 472     <tr><td class="paramname">c</td><td>The connection object to make a copy from. </td></tr>
 473   </table>
 474   </dd>
 475 </dl>
 476
 477 </div>
 478 </div>
 479 <a class="anchor" id="adee4ffd4b1669b4726fd9afc36330c14"></a>
 480 <div class="memitem">
 481 <div class="memproto">
 482 <div class="memtemplate">
 483 template &lt;typename T_slot &gt; </div>
 484 <table class="mlabels">
 485   <tr>
 486   <td class="mlabels-left">
 487       <table class="memname">
 488         <tr>
 489           <td class="memname"><a class="el" href="structsigc_1_1connection.html">connection</a>&amp; sigc::connection::operator= </td>
 490           <td>(</td>
 491           <td class="paramtype">const <a class="el" href="structsigc_1_1slot__iterator.html">slot_iterator</a>&lt; T_slot &gt;&amp;&#160;</td>
 492           <td class="paramname"><em>it</em></td><td>)</td>
 493           <td></td>
 494         </tr>
 495       </table>
 496   </td>
 497   <td class="mlabels-right">
 498 <span class="mlabels"><span class="mlabel">inline</span></span>  </td>
 499   </tr>
 500 </table>
 501 </div><div class="memdoc">
 502
 503 <p>Overrides this connection object with another slot list iterator. </p>
 504 <dl class="params"><dt>Parameters</dt><dd>
 505   <table class="params">
 506     <tr><td class="paramname">it</td><td>The new slot list iterator to take the slot from. </td></tr>
 507   </table>
 508   </dd>
 509 </dl>
 510
 511 </div>
 512 </div>
 513 <a class="anchor" id="a15abcbfa76f1e5d8601cf4ad4176ed50"></a>
 514 <div class="memitem">
 515 <div class="memproto">
 516 <table class="mlabels">
 517   <tr>
 518   <td class="mlabels-left">
 519       <table class="memname">
 520         <tr>
 521           <td class="memname">bool sigc::connection::unblock </td>
 522           <td>(</td>
 523           <td class="paramname"></td><td>)</td>
 524           <td></td>
 525         </tr>
 526       </table>
 527   </td>
 528   <td class="mlabels-right">
 529 <span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>
 530   </tr>
 531 </table>
 532 </div><div class="memdoc">
 533
 534 <p>Unsets the blocking state of this connection. </p>
 535 <dl class="section return"><dt>Returns</dt><dd><code>true</code> if the connection has been in blocking state before. </dd></dl>
 536
 537 </div>
 538 </div>
 539 </div><!-- contents -->
 540 <!-- start footer part -->
 541 <hr class="footer"/><address class="footer"><small>
 542 Generated on Wed Mar 16 2016 20:53:28 for libsigc++ by &#160;<a href="http://www.doxygen.org/index.html">
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 544 </a> 1.8.9.1
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