untracked/docs/reference/html/classsigc_1_1slot__base.html

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  22    <div id="projectname">libsigc++
  23    &#160;<span id="projectnumber">2.10.8</span>
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  43 <li class="navelem"><a class="el" href="namespacesigc.html">sigc</a></li><li class="navelem"><a class="el" href="classsigc_1_1slot__base.html">slot_base</a></li>  </ul>
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  48 <a href="#pub-types">Public Types</a> &#124;
  49 <a href="#pub-methods">Public Member Functions</a> &#124;
  50 <a href="#pub-attribs">Public Attributes</a> &#124;
  51 <a href="classsigc_1_1slot__base-members.html">List of all members</a>  </div>
  52   <div class="headertitle">
  53 <div class="title">sigc::slot_base Class Reference<div class="ingroups"><a class="el" href="group__sigcfunctors.html">Functors</a> &raquo; <a class="el" href="group__slot.html">Slots</a></div></div>  </div>
  54 </div><!--header-->
  55 <div class="contents">
  56
  57 <p>Base type for slots.
  58  <a href="classsigc_1_1slot__base.html#details">More...</a></p>
  59
  60 <p><code>#include &lt;sigc++/functors/slot_base.h&gt;</code></p>
  61 <div class="dynheader">
  62 Inheritance diagram for sigc::slot_base:</div>
  63 <div class="dyncontent">
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  87 <center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>
  88 <table class="memberdecls">
  89 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
  90 Public Types</h2></td></tr>
  91 <tr class="memitem:a7e1a0c2fe43a42187810e8997abeb341"><td class="memItemLeft" align="right" valign="top">typedef <a class="el" href="structsigc_1_1trackable.html#a3338954d7565534bd945290b798e13ed">trackable::func_destroy_notify</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot__base.html#a7e1a0c2fe43a42187810e8997abeb341">func_destroy_notify</a></td></tr>
  92 <tr class="separator:a7e1a0c2fe43a42187810e8997abeb341"><td class="memSeparator" colspan="2">&#160;</td></tr>
  93 </table><table class="memberdecls">
  94 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
  95 Public Member Functions</h2></td></tr>
  96 <tr class="memitem:a182d5db71ef371838c73bcf1c135cd9a"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot__base.html#a182d5db71ef371838c73bcf1c135cd9a">slot_base</a> () noexcept</td></tr>
  97 <tr class="memdesc:a182d5db71ef371838c73bcf1c135cd9a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructs an empty slot.  <a href="classsigc_1_1slot__base.html#a182d5db71ef371838c73bcf1c135cd9a">More...</a><br /></td></tr>
  98 <tr class="separator:a182d5db71ef371838c73bcf1c135cd9a"><td class="memSeparator" colspan="2">&#160;</td></tr>
  99 <tr class="memitem:aadcbb54832b5207bddf89ac5433b531a"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot__base.html#aadcbb54832b5207bddf89ac5433b531a">slot_base</a> (const <a class="el" href="classsigc_1_1slot__base.html">slot_base</a> &amp; src)</td></tr>
 100 <tr class="memdesc:aadcbb54832b5207bddf89ac5433b531a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructs a slot, copying an existing one.  <a href="classsigc_1_1slot__base.html#aadcbb54832b5207bddf89ac5433b531a">More...</a><br /></td></tr>
 101 <tr class="separator:aadcbb54832b5207bddf89ac5433b531a"><td class="memSeparator" colspan="2">&#160;</td></tr>
 102 <tr class="memitem:a5fbc2bf38a0d9ebcbe13d578d2b3d5a1"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot__base.html#a5fbc2bf38a0d9ebcbe13d578d2b3d5a1">slot_base</a> (rep_type * rep) noexcept</td></tr>
 103 <tr class="memdesc:a5fbc2bf38a0d9ebcbe13d578d2b3d5a1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructs a slot from an existing slot_rep object.  <a href="classsigc_1_1slot__base.html#a5fbc2bf38a0d9ebcbe13d578d2b3d5a1">More...</a><br /></td></tr>
 104 <tr class="separator:a5fbc2bf38a0d9ebcbe13d578d2b3d5a1"><td class="memSeparator" colspan="2">&#160;</td></tr>
 105 <tr class="memitem:ad1fee67a5885e424c275ad0f48fc81b1"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot__base.html#ad1fee67a5885e424c275ad0f48fc81b1">slot_base</a> (<a class="el" href="classsigc_1_1slot__base.html">slot_base</a> &amp;&amp; src)</td></tr>
 106 <tr class="memdesc:ad1fee67a5885e424c275ad0f48fc81b1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructs a slot, moving an existing one.  <a href="classsigc_1_1slot__base.html#ad1fee67a5885e424c275ad0f48fc81b1">More...</a><br /></td></tr>
 107 <tr class="separator:ad1fee67a5885e424c275ad0f48fc81b1"><td class="memSeparator" colspan="2">&#160;</td></tr>
 108 <tr class="memitem:a75c18c50860f63fb020fc2953576ea57"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot__base.html#a75c18c50860f63fb020fc2953576ea57">~slot_base</a> ()</td></tr>
 109 <tr class="separator:a75c18c50860f63fb020fc2953576ea57"><td class="memSeparator" colspan="2">&#160;</td></tr>
 110 <tr class="memitem:a8e37cc8f4b57898a288680e59bea2694"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot__base.html#a8e37cc8f4b57898a288680e59bea2694">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="classsigc_1_1slot__base.html#a7e1a0c2fe43a42187810e8997abeb341">func_destroy_notify</a> func) const</td></tr>
 111 <tr class="memdesc:a8e37cc8f4b57898a288680e59bea2694"><td class="mdescLeft">&#160;</td><td class="mdescRight">Add a callback that is executed (notified) when the slot is detroyed.  <a href="classsigc_1_1slot__base.html#a8e37cc8f4b57898a288680e59bea2694">More...</a><br /></td></tr>
 112 <tr class="separator:a8e37cc8f4b57898a288680e59bea2694"><td class="memSeparator" colspan="2">&#160;</td></tr>
 113 <tr class="memitem:a657a8473164c963a5ca4828c88121bb9"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot__base.html#a657a8473164c963a5ca4828c88121bb9">block</a> (bool should_block=true) noexcept</td></tr>
 114 <tr class="memdesc:a657a8473164c963a5ca4828c88121bb9"><td class="mdescLeft">&#160;</td><td class="mdescRight">Sets the blocking state.  <a href="classsigc_1_1slot__base.html#a657a8473164c963a5ca4828c88121bb9">More...</a><br /></td></tr>
 115 <tr class="separator:a657a8473164c963a5ca4828c88121bb9"><td class="memSeparator" colspan="2">&#160;</td></tr>
 116 <tr class="memitem:a2f266b6147c4a6bbc5b68994d2dc1517"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot__base.html#a2f266b6147c4a6bbc5b68994d2dc1517">blocked</a> () const noexcept</td></tr>
 117 <tr class="memdesc:a2f266b6147c4a6bbc5b68994d2dc1517"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns whether the slot is blocked.  <a href="classsigc_1_1slot__base.html#a2f266b6147c4a6bbc5b68994d2dc1517">More...</a><br /></td></tr>
 118 <tr class="separator:a2f266b6147c4a6bbc5b68994d2dc1517"><td class="memSeparator" colspan="2">&#160;</td></tr>
 119 <tr class="memitem:a4042d221f7f07a7394d2eb0f14db2857"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot__base.html#a4042d221f7f07a7394d2eb0f14db2857">disconnect</a> ()</td></tr>
 120 <tr class="memdesc:a4042d221f7f07a7394d2eb0f14db2857"><td class="mdescLeft">&#160;</td><td class="mdescRight">Disconnects the slot.  <a href="classsigc_1_1slot__base.html#a4042d221f7f07a7394d2eb0f14db2857">More...</a><br /></td></tr>
 121 <tr class="separator:a4042d221f7f07a7394d2eb0f14db2857"><td class="memSeparator" colspan="2">&#160;</td></tr>
 122 <tr class="memitem:ae6ac6ca962a1f6a7506d0817165b5cef"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot__base.html#ae6ac6ca962a1f6a7506d0817165b5cef">empty</a> () const noexcept</td></tr>
 123 <tr class="memdesc:ae6ac6ca962a1f6a7506d0817165b5cef"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns whether the slot is invalid.  <a href="classsigc_1_1slot__base.html#ae6ac6ca962a1f6a7506d0817165b5cef">More...</a><br /></td></tr>
 124 <tr class="separator:ae6ac6ca962a1f6a7506d0817165b5cef"><td class="memSeparator" colspan="2">&#160;</td></tr>
 125 <tr class="memitem:a90d4d7d6037973a94d7dfd7ba9a5feb9"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot__base.html#a90d4d7d6037973a94d7dfd7ba9a5feb9">operator bool</a> () const noexcept</td></tr>
 126 <tr class="memdesc:a90d4d7d6037973a94d7dfd7ba9a5feb9"><td class="mdescLeft">&#160;</td><td class="mdescRight">Tests whether a slot is null, because the default constructor was used.  <a href="classsigc_1_1slot__base.html#a90d4d7d6037973a94d7dfd7ba9a5feb9">More...</a><br /></td></tr>
 127 <tr class="separator:a90d4d7d6037973a94d7dfd7ba9a5feb9"><td class="memSeparator" colspan="2">&#160;</td></tr>
 128 <tr class="memitem:a19522528264f1646f8ed982b0042ffad"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classsigc_1_1slot__base.html">slot_base</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot__base.html#a19522528264f1646f8ed982b0042ffad">operator=</a> (const <a class="el" href="classsigc_1_1slot__base.html">slot_base</a> &amp; src)</td></tr>
 129 <tr class="memdesc:a19522528264f1646f8ed982b0042ffad"><td class="mdescLeft">&#160;</td><td class="mdescRight">Overrides this slot, making a copy from another slot.  <a href="classsigc_1_1slot__base.html#a19522528264f1646f8ed982b0042ffad">More...</a><br /></td></tr>
 130 <tr class="separator:a19522528264f1646f8ed982b0042ffad"><td class="memSeparator" colspan="2">&#160;</td></tr>
 131 <tr class="memitem:a64e36f28ee61a94c0496fe76f6b3e813"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classsigc_1_1slot__base.html">slot_base</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot__base.html#a64e36f28ee61a94c0496fe76f6b3e813">operator=</a> (<a class="el" href="classsigc_1_1slot__base.html">slot_base</a> &amp;&amp; src)</td></tr>
 132 <tr class="memdesc:a64e36f28ee61a94c0496fe76f6b3e813"><td class="mdescLeft">&#160;</td><td class="mdescRight">Overrides this slot, making a move from another slot.  <a href="classsigc_1_1slot__base.html#a64e36f28ee61a94c0496fe76f6b3e813">More...</a><br /></td></tr>
 133 <tr class="separator:a64e36f28ee61a94c0496fe76f6b3e813"><td class="memSeparator" colspan="2">&#160;</td></tr>
 134 <tr class="memitem:a69c55dedaa35626f288754d55b3da66c"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot__base.html#a69c55dedaa35626f288754d55b3da66c">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>
 135 <tr class="memdesc:a69c55dedaa35626f288754d55b3da66c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Remove a callback previously installed with <a class="el" href="classsigc_1_1slot__base.html#a8e37cc8f4b57898a288680e59bea2694" title="Add a callback that is executed (notified) when the slot is detroyed.">add_destroy_notify_callback()</a>.  <a href="classsigc_1_1slot__base.html#a69c55dedaa35626f288754d55b3da66c">More...</a><br /></td></tr>
 136 <tr class="separator:a69c55dedaa35626f288754d55b3da66c"><td class="memSeparator" colspan="2">&#160;</td></tr>
 137 <tr class="memitem:aa7d281de451d5f47923f4ff1c5b7f2c9"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot__base.html#aa7d281de451d5f47923f4ff1c5b7f2c9">set_parent</a> (void * parent, void *(* cleanup)(void *)) const noexcept</td></tr>
 138 <tr class="memdesc:aa7d281de451d5f47923f4ff1c5b7f2c9"><td class="mdescLeft">&#160;</td><td class="mdescRight">Sets the parent of this slot.  <a href="classsigc_1_1slot__base.html#aa7d281de451d5f47923f4ff1c5b7f2c9">More...</a><br /></td></tr>
 139 <tr class="separator:aa7d281de451d5f47923f4ff1c5b7f2c9"><td class="memSeparator" colspan="2">&#160;</td></tr>
 140 <tr class="memitem:a25ad0bd4d2cea4dbfcd09f7d393d266d"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot__base.html#a25ad0bd4d2cea4dbfcd09f7d393d266d">unblock</a> () noexcept</td></tr>
 141 <tr class="memdesc:a25ad0bd4d2cea4dbfcd09f7d393d266d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Unsets the blocking state.  <a href="classsigc_1_1slot__base.html#a25ad0bd4d2cea4dbfcd09f7d393d266d">More...</a><br /></td></tr>
 142 <tr class="separator:a25ad0bd4d2cea4dbfcd09f7d393d266d"><td class="memSeparator" colspan="2">&#160;</td></tr>
 143 </table><table class="memberdecls">
 144 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-attribs"></a>
 145 Public Attributes</h2></td></tr>
 146 <tr class="memitem:a9dc4958860c0f8300b461a743b7f2a2b"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot__base.html#a9dc4958860c0f8300b461a743b7f2a2b">blocked_</a></td></tr>
 147 <tr class="memdesc:a9dc4958860c0f8300b461a743b7f2a2b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Indicates whether the slot is blocked.  <a href="classsigc_1_1slot__base.html#a9dc4958860c0f8300b461a743b7f2a2b">More...</a><br /></td></tr>
 148 <tr class="separator:a9dc4958860c0f8300b461a743b7f2a2b"><td class="memSeparator" colspan="2">&#160;</td></tr>
 149 <tr class="memitem:aa482f7dfc73c6950abde0fd51b3125b5"><td class="memItemLeft" align="right" valign="top">rep_type *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot__base.html#aa482f7dfc73c6950abde0fd51b3125b5">rep_</a></td></tr>
 150 <tr class="memdesc:aa482f7dfc73c6950abde0fd51b3125b5"><td class="mdescLeft">&#160;</td><td class="mdescRight">Typed slot_rep object that contains a functor.  <a href="classsigc_1_1slot__base.html#aa482f7dfc73c6950abde0fd51b3125b5">More...</a><br /></td></tr>
 151 <tr class="separator:aa482f7dfc73c6950abde0fd51b3125b5"><td class="memSeparator" colspan="2">&#160;</td></tr>
 152 </table>
 153 <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
 154 <div class="textblock"><p>Base type for slots. </p>
 155 <p><a class="el" href="classsigc_1_1slot__base.html" title="Base type for slots.">slot_base</a> integrates most of the interface of the derived <a class="el" href="classsigc_1_1slot.html" title="Convenience wrapper for the numbered sigc::slot# templates.">sigc::slot</a> templates. slots can be connected to signals, be disconnected at some later point (<a class="el" href="classsigc_1_1slot__base.html#a4042d221f7f07a7394d2eb0f14db2857" title="Disconnects the slot.">disconnect()</a>) and temporarily be blocked (<a class="el" href="classsigc_1_1slot__base.html#a657a8473164c963a5ca4828c88121bb9" title="Sets the blocking state.">block()</a>, <a class="el" href="classsigc_1_1slot__base.html#a25ad0bd4d2cea4dbfcd09f7d393d266d" title="Unsets the blocking state.">unblock()</a>). The validity of a slot can be tested with <a class="el" href="classsigc_1_1slot__base.html#ae6ac6ca962a1f6a7506d0817165b5cef" title="Returns whether the slot is invalid.">empty()</a>.</p>
 156 <p>The internal representation of a sigc::internal::slot_rep derived type is built from <a class="el" href="classsigc_1_1slot__base.html" title="Base type for slots.">slot_base</a>'s derivations. <a class="el" href="classsigc_1_1slot__base.html#aa7d281de451d5f47923f4ff1c5b7f2c9" title="Sets the parent of this slot.">set_parent()</a> is used to register a notification callback that is executed when the slot gets invalid. <a class="el" href="classsigc_1_1slot__base.html#a8e37cc8f4b57898a288680e59bea2694" title="Add a callback that is executed (notified) when the slot is detroyed.">add_destroy_notify_callback()</a> is used by connection objects to add a notification callback that is executed on destruction. </p>
 157 </div><h2 class="groupheader">Member Typedef Documentation</h2>
 158 <a id="a7e1a0c2fe43a42187810e8997abeb341"></a>
 159 <h2 class="memtitle"><span class="permalink"><a href="#a7e1a0c2fe43a42187810e8997abeb341">&#9670;&#160;</a></span>func_destroy_notify</h2>
 160
 161 <div class="memitem">
 162 <div class="memproto">
 163       <table class="memname">
 164         <tr>
 165           <td class="memname">typedef <a class="el" href="structsigc_1_1trackable.html#a3338954d7565534bd945290b798e13ed">trackable::func_destroy_notify</a> <a class="el" href="classsigc_1_1slot__base.html#a7e1a0c2fe43a42187810e8997abeb341">sigc::slot_base::func_destroy_notify</a></td>
 166         </tr>
 167       </table>
 168 </div><div class="memdoc">
 169
 170 </div>
 171 </div>
 172 <h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
 173 <a id="a182d5db71ef371838c73bcf1c135cd9a"></a>
 174 <h2 class="memtitle"><span class="permalink"><a href="#a182d5db71ef371838c73bcf1c135cd9a">&#9670;&#160;</a></span>slot_base() <span class="overload">[1/4]</span></h2>
 175
 176 <div class="memitem">
 177 <div class="memproto">
 178 <table class="mlabels">
 179   <tr>
 180   <td class="mlabels-left">
 181       <table class="memname">
 182         <tr>
 183           <td class="memname">sigc::slot_base::slot_base </td>
 184           <td>(</td>
 185           <td class="paramname"></td><td>)</td>
 186           <td></td>
 187         </tr>
 188       </table>
 189   </td>
 190   <td class="mlabels-right">
 191 <span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>
 192   </tr>
 193 </table>
 194 </div><div class="memdoc">
 195
 196 <p>Constructs an empty slot. </p>
 197
 198 </div>
 199 </div>
 200 <a id="a5fbc2bf38a0d9ebcbe13d578d2b3d5a1"></a>
 201 <h2 class="memtitle"><span class="permalink"><a href="#a5fbc2bf38a0d9ebcbe13d578d2b3d5a1">&#9670;&#160;</a></span>slot_base() <span class="overload">[2/4]</span></h2>
 202
 203 <div class="memitem">
 204 <div class="memproto">
 205 <table class="mlabels">
 206   <tr>
 207   <td class="mlabels-left">
 208       <table class="memname">
 209         <tr>
 210           <td class="memname">sigc::slot_base::slot_base </td>
 211           <td>(</td>
 212           <td class="paramtype">rep_type *&#160;</td>
 213           <td class="paramname"><em>rep</em></td><td>)</td>
 214           <td></td>
 215         </tr>
 216       </table>
 217   </td>
 218   <td class="mlabels-right">
 219 <span class="mlabels"><span class="mlabel">explicit</span><span class="mlabel">noexcept</span></span>  </td>
 220   </tr>
 221 </table>
 222 </div><div class="memdoc">
 223
 224 <p>Constructs a slot from an existing slot_rep object. </p>
 225 <dl class="params"><dt>Parameters</dt><dd>
 226   <table class="params">
 227     <tr><td class="paramname">rep</td><td>The slot_rep object this slot should contain. </td></tr>
 228   </table>
 229   </dd>
 230 </dl>
 231
 232 </div>
 233 </div>
 234 <a id="aadcbb54832b5207bddf89ac5433b531a"></a>
 235 <h2 class="memtitle"><span class="permalink"><a href="#aadcbb54832b5207bddf89ac5433b531a">&#9670;&#160;</a></span>slot_base() <span class="overload">[3/4]</span></h2>
 236
 237 <div class="memitem">
 238 <div class="memproto">
 239       <table class="memname">
 240         <tr>
 241           <td class="memname">sigc::slot_base::slot_base </td>
 242           <td>(</td>
 243           <td class="paramtype">const <a class="el" href="classsigc_1_1slot__base.html">slot_base</a> &amp;&#160;</td>
 244           <td class="paramname"><em>src</em></td><td>)</td>
 245           <td></td>
 246         </tr>
 247       </table>
 248 </div><div class="memdoc">
 249
 250 <p>Constructs a slot, copying an existing one. </p>
 251 <dl class="params"><dt>Parameters</dt><dd>
 252   <table class="params">
 253     <tr><td class="paramname">src</td><td>The existing slot to copy. </td></tr>
 254   </table>
 255   </dd>
 256 </dl>
 257
 258 </div>
 259 </div>
 260 <a id="ad1fee67a5885e424c275ad0f48fc81b1"></a>
 261 <h2 class="memtitle"><span class="permalink"><a href="#ad1fee67a5885e424c275ad0f48fc81b1">&#9670;&#160;</a></span>slot_base() <span class="overload">[4/4]</span></h2>
 262
 263 <div class="memitem">
 264 <div class="memproto">
 265       <table class="memname">
 266         <tr>
 267           <td class="memname">sigc::slot_base::slot_base </td>
 268           <td>(</td>
 269           <td class="paramtype"><a class="el" href="classsigc_1_1slot__base.html">slot_base</a> &amp;&amp;&#160;</td>
 270           <td class="paramname"><em>src</em></td><td>)</td>
 271           <td></td>
 272         </tr>
 273       </table>
 274 </div><div class="memdoc">
 275
 276 <p>Constructs a slot, moving an existing one. </p>
 277 <p>If <code>src</code> is connected to a parent (e.g. a signal), it is copied, not moved. </p><dl class="params"><dt>Parameters</dt><dd>
 278   <table class="params">
 279     <tr><td class="paramname">src</td><td>The existing slot to move or copy. </td></tr>
 280   </table>
 281   </dd>
 282 </dl>
 283
 284 </div>
 285 </div>
 286 <a id="a75c18c50860f63fb020fc2953576ea57"></a>
 287 <h2 class="memtitle"><span class="permalink"><a href="#a75c18c50860f63fb020fc2953576ea57">&#9670;&#160;</a></span>~slot_base()</h2>
 288
 289 <div class="memitem">
 290 <div class="memproto">
 291       <table class="memname">
 292         <tr>
 293           <td class="memname">sigc::slot_base::~slot_base </td>
 294           <td>(</td>
 295           <td class="paramname"></td><td>)</td>
 296           <td></td>
 297         </tr>
 298       </table>
 299 </div><div class="memdoc">
 300
 301 </div>
 302 </div>
 303 <h2 class="groupheader">Member Function Documentation</h2>
 304 <a id="a8e37cc8f4b57898a288680e59bea2694"></a>
 305 <h2 class="memtitle"><span class="permalink"><a href="#a8e37cc8f4b57898a288680e59bea2694">&#9670;&#160;</a></span>add_destroy_notify_callback()</h2>
 306
 307 <div class="memitem">
 308 <div class="memproto">
 309       <table class="memname">
 310         <tr>
 311           <td class="memname">void sigc::slot_base::add_destroy_notify_callback </td>
 312           <td>(</td>
 313           <td class="paramtype">void *&#160;</td>
 314           <td class="paramname"><em>data</em>, </td>
 315         </tr>
 316         <tr>
 317           <td class="paramkey"></td>
 318           <td></td>
 319           <td class="paramtype"><a class="el" href="classsigc_1_1slot__base.html#a7e1a0c2fe43a42187810e8997abeb341">func_destroy_notify</a>&#160;</td>
 320           <td class="paramname"><em>func</em>&#160;</td>
 321         </tr>
 322         <tr>
 323           <td></td>
 324           <td>)</td>
 325           <td></td><td> const</td>
 326         </tr>
 327       </table>
 328 </div><div class="memdoc">
 329
 330 <p>Add a callback that is executed (notified) when the slot is detroyed. </p>
 331 <p>This function is used internally by connection objects. </p><dl class="params"><dt>Parameters</dt><dd>
 332   <table class="params">
 333     <tr><td class="paramname">data</td><td>Passed into func upon notification. </td></tr>
 334     <tr><td class="paramname">func</td><td>Callback executed upon destruction of the object. </td></tr>
 335   </table>
 336   </dd>
 337 </dl>
 338
 339 </div>
 340 </div>
 341 <a id="a657a8473164c963a5ca4828c88121bb9"></a>
 342 <h2 class="memtitle"><span class="permalink"><a href="#a657a8473164c963a5ca4828c88121bb9">&#9670;&#160;</a></span>block()</h2>
 343
 344 <div class="memitem">
 345 <div class="memproto">
 346 <table class="mlabels">
 347   <tr>
 348   <td class="mlabels-left">
 349       <table class="memname">
 350         <tr>
 351           <td class="memname">bool sigc::slot_base::block </td>
 352           <td>(</td>
 353           <td class="paramtype">bool&#160;</td>
 354           <td class="paramname"><em>should_block</em> = <code>true</code></td><td>)</td>
 355           <td></td>
 356         </tr>
 357       </table>
 358   </td>
 359   <td class="mlabels-right">
 360 <span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>
 361   </tr>
 362 </table>
 363 </div><div class="memdoc">
 364
 365 <p>Sets the blocking state. </p>
 366 <p>If <em>should_block</em> is <code>true</code> then the blocking state is set. Subsequent calls to <a class="el" href="classsigc_1_1slot7.html#a28e18e1a9adc88a4758be7d2497fc88d" title="Invoke the contained functor unless slot is in blocking state.">slot::operator()()</a> don't invoke the functor contained by this slot until <a class="el" href="classsigc_1_1slot__base.html#a25ad0bd4d2cea4dbfcd09f7d393d266d" title="Unsets the blocking state.">unblock()</a> or <a class="el" href="classsigc_1_1slot__base.html#a657a8473164c963a5ca4828c88121bb9" title="Sets the blocking state.">block()</a> with <em>should_block</em> = <code>false</code> is called. </p><dl class="params"><dt>Parameters</dt><dd>
 367   <table class="params">
 368     <tr><td class="paramname">should_block</td><td>Indicates whether the blocking state should be set or unset. </td></tr>
 369   </table>
 370   </dd>
 371 </dl>
 372 <dl class="section return"><dt>Returns</dt><dd><code>true</code> if the slot was in blocking state before. </dd></dl>
 373
 374 </div>
 375 </div>
 376 <a id="a2f266b6147c4a6bbc5b68994d2dc1517"></a>
 377 <h2 class="memtitle"><span class="permalink"><a href="#a2f266b6147c4a6bbc5b68994d2dc1517">&#9670;&#160;</a></span>blocked()</h2>
 378
 379 <div class="memitem">
 380 <div class="memproto">
 381 <table class="mlabels">
 382   <tr>
 383   <td class="mlabels-left">
 384       <table class="memname">
 385         <tr>
 386           <td class="memname">bool sigc::slot_base::blocked </td>
 387           <td>(</td>
 388           <td class="paramname"></td><td>)</td>
 389           <td> const</td>
 390         </tr>
 391       </table>
 392   </td>
 393   <td class="mlabels-right">
 394 <span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">noexcept</span></span>  </td>
 395   </tr>
 396 </table>
 397 </div><div class="memdoc">
 398
 399 <p>Returns whether the slot is blocked. </p>
 400 <dl class="section return"><dt>Returns</dt><dd><code>true</code> if the slot is blocked. </dd></dl>
 401
 402 </div>
 403 </div>
 404 <a id="a4042d221f7f07a7394d2eb0f14db2857"></a>
 405 <h2 class="memtitle"><span class="permalink"><a href="#a4042d221f7f07a7394d2eb0f14db2857">&#9670;&#160;</a></span>disconnect()</h2>
 406
 407 <div class="memitem">
 408 <div class="memproto">
 409       <table class="memname">
 410         <tr>
 411           <td class="memname">void sigc::slot_base::disconnect </td>
 412           <td>(</td>
 413           <td class="paramname"></td><td>)</td>
 414           <td></td>
 415         </tr>
 416       </table>
 417 </div><div class="memdoc">
 418
 419 <p>Disconnects the slot. </p>
 420 <p>Invalidates the slot and notifies the parent. </p>
 421
 422 </div>
 423 </div>
 424 <a id="ae6ac6ca962a1f6a7506d0817165b5cef"></a>
 425 <h2 class="memtitle"><span class="permalink"><a href="#ae6ac6ca962a1f6a7506d0817165b5cef">&#9670;&#160;</a></span>empty()</h2>
 426
 427 <div class="memitem">
 428 <div class="memproto">
 429 <table class="mlabels">
 430   <tr>
 431   <td class="mlabels-left">
 432       <table class="memname">
 433         <tr>
 434           <td class="memname">bool sigc::slot_base::empty </td>
 435           <td>(</td>
 436           <td class="paramname"></td><td>)</td>
 437           <td> const</td>
 438         </tr>
 439       </table>
 440   </td>
 441   <td class="mlabels-right">
 442 <span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">noexcept</span></span>  </td>
 443   </tr>
 444 </table>
 445 </div><div class="memdoc">
 446
 447 <p>Returns whether the slot is invalid. </p>
 448 <dl class="section return"><dt>Returns</dt><dd><code>true</code> if the slot is invalid (empty). </dd></dl>
 449
 450 </div>
 451 </div>
 452 <a id="a90d4d7d6037973a94d7dfd7ba9a5feb9"></a>
 453 <h2 class="memtitle"><span class="permalink"><a href="#a90d4d7d6037973a94d7dfd7ba9a5feb9">&#9670;&#160;</a></span>operator bool()</h2>
 454
 455 <div class="memitem">
 456 <div class="memproto">
 457 <table class="mlabels">
 458   <tr>
 459   <td class="mlabels-left">
 460       <table class="memname">
 461         <tr>
 462           <td class="memname">sigc::slot_base::operator bool </td>
 463           <td>(</td>
 464           <td class="paramname"></td><td>)</td>
 465           <td> const</td>
 466         </tr>
 467       </table>
 468   </td>
 469   <td class="mlabels-right">
 470 <span class="mlabels"><span class="mlabel">explicit</span><span class="mlabel">noexcept</span></span>  </td>
 471   </tr>
 472 </table>
 473 </div><div class="memdoc">
 474
 475 <p>Tests whether a slot is null, because the default constructor was used. </p>
 476 <p>Test a slot for null like so: </p><div class="fragment"><div class="line"><span class="keywordflow">if</span>(slot)</div>
 477 <div class="line"> do_something()</div>
 478 </div><!-- fragment -->
 479 </div>
 480 </div>
 481 <a id="a19522528264f1646f8ed982b0042ffad"></a>
 482 <h2 class="memtitle"><span class="permalink"><a href="#a19522528264f1646f8ed982b0042ffad">&#9670;&#160;</a></span>operator=() <span class="overload">[1/2]</span></h2>
 483
 484 <div class="memitem">
 485 <div class="memproto">
 486       <table class="memname">
 487         <tr>
 488           <td class="memname"><a class="el" href="classsigc_1_1slot__base.html">slot_base</a>&amp; sigc::slot_base::operator= </td>
 489           <td>(</td>
 490           <td class="paramtype">const <a class="el" href="classsigc_1_1slot__base.html">slot_base</a> &amp;&#160;</td>
 491           <td class="paramname"><em>src</em></td><td>)</td>
 492           <td></td>
 493         </tr>
 494       </table>
 495 </div><div class="memdoc">
 496
 497 <p>Overrides this slot, making a copy from another slot. </p>
 498 <dl class="params"><dt>Parameters</dt><dd>
 499   <table class="params">
 500     <tr><td class="paramname">src</td><td>The slot from which to make a copy. </td></tr>
 501   </table>
 502   </dd>
 503 </dl>
 504 <dl class="section return"><dt>Returns</dt><dd><code>this</code>. </dd></dl>
 505
 506 </div>
 507 </div>
 508 <a id="a64e36f28ee61a94c0496fe76f6b3e813"></a>
 509 <h2 class="memtitle"><span class="permalink"><a href="#a64e36f28ee61a94c0496fe76f6b3e813">&#9670;&#160;</a></span>operator=() <span class="overload">[2/2]</span></h2>
 510
 511 <div class="memitem">
 512 <div class="memproto">
 513       <table class="memname">
 514         <tr>
 515           <td class="memname"><a class="el" href="classsigc_1_1slot__base.html">slot_base</a>&amp; sigc::slot_base::operator= </td>
 516           <td>(</td>
 517           <td class="paramtype"><a class="el" href="classsigc_1_1slot__base.html">slot_base</a> &amp;&amp;&#160;</td>
 518           <td class="paramname"><em>src</em></td><td>)</td>
 519           <td></td>
 520         </tr>
 521       </table>
 522 </div><div class="memdoc">
 523
 524 <p>Overrides this slot, making a move from another slot. </p>
 525 <p>If <code>src</code> is connected to a parent (e.g. a signal), it is copied, not moved. </p><dl class="params"><dt>Parameters</dt><dd>
 526   <table class="params">
 527     <tr><td class="paramname">src</td><td>The slot from which to move or copy. </td></tr>
 528   </table>
 529   </dd>
 530 </dl>
 531 <dl class="section return"><dt>Returns</dt><dd><code>this</code>. </dd></dl>
 532
 533 </div>
 534 </div>
 535 <a id="a69c55dedaa35626f288754d55b3da66c"></a>
 536 <h2 class="memtitle"><span class="permalink"><a href="#a69c55dedaa35626f288754d55b3da66c">&#9670;&#160;</a></span>remove_destroy_notify_callback()</h2>
 537
 538 <div class="memitem">
 539 <div class="memproto">
 540       <table class="memname">
 541         <tr>
 542           <td class="memname">void sigc::slot_base::remove_destroy_notify_callback </td>
 543           <td>(</td>
 544           <td class="paramtype">void *&#160;</td>
 545           <td class="paramname"><em>data</em></td><td>)</td>
 546           <td> const</td>
 547         </tr>
 548       </table>
 549 </div><div class="memdoc">
 550
 551 <p>Remove a callback previously installed with <a class="el" href="classsigc_1_1slot__base.html#a8e37cc8f4b57898a288680e59bea2694" title="Add a callback that is executed (notified) when the slot is detroyed.">add_destroy_notify_callback()</a>. </p>
 552 <p>The callback is not executed. </p><dl class="params"><dt>Parameters</dt><dd>
 553   <table class="params">
 554     <tr><td class="paramname">data</td><td>Parameter passed into previous call to <a class="el" href="classsigc_1_1slot__base.html#a8e37cc8f4b57898a288680e59bea2694" title="Add a callback that is executed (notified) when the slot is detroyed.">add_destroy_notify_callback()</a>. </td></tr>
 555   </table>
 556   </dd>
 557 </dl>
 558
 559 </div>
 560 </div>
 561 <a id="aa7d281de451d5f47923f4ff1c5b7f2c9"></a>
 562 <h2 class="memtitle"><span class="permalink"><a href="#aa7d281de451d5f47923f4ff1c5b7f2c9">&#9670;&#160;</a></span>set_parent()</h2>
 563
 564 <div class="memitem">
 565 <div class="memproto">
 566 <table class="mlabels">
 567   <tr>
 568   <td class="mlabels-left">
 569       <table class="memname">
 570         <tr>
 571           <td class="memname">void sigc::slot_base::set_parent </td>
 572           <td>(</td>
 573           <td class="paramtype">void *&#160;</td>
 574           <td class="paramname"><em>parent</em>, </td>
 575         </tr>
 576         <tr>
 577           <td class="paramkey"></td>
 578           <td></td>
 579           <td class="paramtype">void *(*)(void *)&#160;</td>
 580           <td class="paramname"><em>cleanup</em>&#160;</td>
 581         </tr>
 582         <tr>
 583           <td></td>
 584           <td>)</td>
 585           <td></td><td> const</td>
 586         </tr>
 587       </table>
 588   </td>
 589   <td class="mlabels-right">
 590 <span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>
 591   </tr>
 592 </table>
 593 </div><div class="memdoc">
 594
 595 <p>Sets the parent of this slot. </p>
 596 <p>This function is used by signals to register a notification callback. This notification callback is executed when the slot becomes invalid because of some referred object dying. </p><dl class="params"><dt>Parameters</dt><dd>
 597   <table class="params">
 598     <tr><td class="paramname">parent</td><td>The new parent. </td></tr>
 599     <tr><td class="paramname">cleanup</td><td>The notification callback. </td></tr>
 600   </table>
 601   </dd>
 602 </dl>
 603
 604 </div>
 605 </div>
 606 <a id="a25ad0bd4d2cea4dbfcd09f7d393d266d"></a>
 607 <h2 class="memtitle"><span class="permalink"><a href="#a25ad0bd4d2cea4dbfcd09f7d393d266d">&#9670;&#160;</a></span>unblock()</h2>
 608
 609 <div class="memitem">
 610 <div class="memproto">
 611 <table class="mlabels">
 612   <tr>
 613   <td class="mlabels-left">
 614       <table class="memname">
 615         <tr>
 616           <td class="memname">bool sigc::slot_base::unblock </td>
 617           <td>(</td>
 618           <td class="paramname"></td><td>)</td>
 619           <td></td>
 620         </tr>
 621       </table>
 622   </td>
 623   <td class="mlabels-right">
 624 <span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>
 625   </tr>
 626 </table>
 627 </div><div class="memdoc">
 628
 629 <p>Unsets the blocking state. </p>
 630 <dl class="section return"><dt>Returns</dt><dd><code>true</code> if the slot was in blocking state before. </dd></dl>
 631
 632 </div>
 633 </div>
 634 <h2 class="groupheader">Member Data Documentation</h2>
 635 <a id="a9dc4958860c0f8300b461a743b7f2a2b"></a>
 636 <h2 class="memtitle"><span class="permalink"><a href="#a9dc4958860c0f8300b461a743b7f2a2b">&#9670;&#160;</a></span>blocked_</h2>
 637
 638 <div class="memitem">
 639 <div class="memproto">
 640       <table class="memname">
 641         <tr>
 642           <td class="memname">bool sigc::slot_base::blocked_</td>
 643         </tr>
 644       </table>
 645 </div><div class="memdoc">
 646
 647 <p>Indicates whether the slot is blocked. </p>
 648
 649 </div>
 650 </div>
 651 <a id="aa482f7dfc73c6950abde0fd51b3125b5"></a>
 652 <h2 class="memtitle"><span class="permalink"><a href="#aa482f7dfc73c6950abde0fd51b3125b5">&#9670;&#160;</a></span>rep_</h2>
 653
 654 <div class="memitem">
 655 <div class="memproto">
 656 <table class="mlabels">
 657   <tr>
 658   <td class="mlabels-left">
 659       <table class="memname">
 660         <tr>
 661           <td class="memname">rep_type* sigc::slot_base::rep_</td>
 662         </tr>
 663       </table>
 664   </td>
 665   <td class="mlabels-right">
 666 <span class="mlabels"><span class="mlabel">mutable</span></span>  </td>
 667   </tr>
 668 </table>
 669 </div><div class="memdoc">
 670
 671 <p>Typed slot_rep object that contains a functor. </p>
 672
 673 </div>
 674 </div>
 675 </div><!-- contents -->
 676 <!-- start footer part -->
 677 <hr class="footer"/><address class="footer"><small>
 678 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
 679 </small></address>
 680 </body>
 681 </html>