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23  <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="structsigc_1_1connection.html">connection</a></li> </ul>
48 <a href="#pub-methods">Public Member Functions</a> |
49 <a href="#pub-static-methods">Static Public Member Functions</a> |
50 <a href="structsigc_1_1connection-members.html">List of all members</a> </div>
51 <div class="headertitle">
52 <div class="title">sigc::connection Struct Reference<div class="ingroups"><a class="el" href="group__signal.html">Signals</a></div></div> </div>
54 <div class="contents">
56 <p>Convinience class for safe disconnection.
57 <a href="structsigc_1_1connection.html#details">More...</a></p>
59 <p><code>#include <sigc++/connection.h></code></p>
60 <table class="memberdecls">
61 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
62 Public Member Functions</h2></td></tr>
63 <tr class="memitem:a95f80dbbf10fde0b851d78ec12cc2629"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a95f80dbbf10fde0b851d78ec12cc2629">connection</a> () noexcept</td></tr>
64 <tr class="memdesc:a95f80dbbf10fde0b851d78ec12cc2629"><td class="mdescLeft"> </td><td class="mdescRight">Constructs an empty connection object. <a href="structsigc_1_1connection.html#a95f80dbbf10fde0b851d78ec12cc2629">More...</a><br /></td></tr>
65 <tr class="separator:a95f80dbbf10fde0b851d78ec12cc2629"><td class="memSeparator" colspan="2"> </td></tr>
66 <tr class="memitem:ad13d5e3331cc9b1494e0edb8fa37fdba"><td class="memItemLeft" align="right" valign="top"> </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> & c)</td></tr>
67 <tr class="memdesc:ad13d5e3331cc9b1494e0edb8fa37fdba"><td class="mdescLeft"> </td><td class="mdescRight">Constructs a connection object copying an existing one. <a href="structsigc_1_1connection.html#ad13d5e3331cc9b1494e0edb8fa37fdba">More...</a><br /></td></tr>
68 <tr class="separator:ad13d5e3331cc9b1494e0edb8fa37fdba"><td class="memSeparator" colspan="2"> </td></tr>
69 <tr class="memitem:ac8847ae94e0b05bed6c81f54f58deef3"><td class="memTemplParams" colspan="2">template<typename T_slot > </td></tr>
70 <tr class="memitem:ac8847ae94e0b05bed6c81f54f58deef3"><td class="memTemplItemLeft" align="right" valign="top"> </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>< T_slot > & it)</td></tr>
71 <tr class="memdesc:ac8847ae94e0b05bed6c81f54f58deef3"><td class="mdescLeft"> </td><td class="mdescRight">Constructs a connection object from a slot list iterator. <a href="structsigc_1_1connection.html#ac8847ae94e0b05bed6c81f54f58deef3">More...</a><br /></td></tr>
72 <tr class="separator:ac8847ae94e0b05bed6c81f54f58deef3"><td class="memSeparator" colspan="2"> </td></tr>
73 <tr class="memitem:a124709de26781e5ffcf8bbb5dcd621ed"><td class="memItemLeft" align="right" valign="top"> </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> & sl)</td></tr>
74 <tr class="memdesc:a124709de26781e5ffcf8bbb5dcd621ed"><td class="mdescLeft"> </td><td class="mdescRight">Constructs a connection object from a slot object. <a href="structsigc_1_1connection.html#a124709de26781e5ffcf8bbb5dcd621ed">More...</a><br /></td></tr>
75 <tr class="separator:a124709de26781e5ffcf8bbb5dcd621ed"><td class="memSeparator" colspan="2"> </td></tr>
76 <tr class="memitem:a99678ccb2be5c20719f37e469416578a"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a99678ccb2be5c20719f37e469416578a">~connection</a> ()</td></tr>
77 <tr class="separator:a99678ccb2be5c20719f37e469416578a"><td class="memSeparator" colspan="2"> </td></tr>
78 <tr class="memitem:a581ae4f2b708cb6be7b081557864d6ec"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a581ae4f2b708cb6be7b081557864d6ec">block</a> (bool should_block=true) noexcept</td></tr>
79 <tr class="memdesc:a581ae4f2b708cb6be7b081557864d6ec"><td class="mdescLeft"> </td><td class="mdescRight">Sets or unsets the blocking state of this connection. <a href="structsigc_1_1connection.html#a581ae4f2b708cb6be7b081557864d6ec">More...</a><br /></td></tr>
80 <tr class="separator:a581ae4f2b708cb6be7b081557864d6ec"><td class="memSeparator" colspan="2"> </td></tr>
81 <tr class="memitem:a7c86964aa4b0f339db5842e6c7e604f3"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a7c86964aa4b0f339db5842e6c7e604f3">blocked</a> () const noexcept</td></tr>
82 <tr class="memdesc:a7c86964aa4b0f339db5842e6c7e604f3"><td class="mdescLeft"> </td><td class="mdescRight">Returns whether the connection is blocked. <a href="structsigc_1_1connection.html#a7c86964aa4b0f339db5842e6c7e604f3">More...</a><br /></td></tr>
83 <tr class="separator:a7c86964aa4b0f339db5842e6c7e604f3"><td class="memSeparator" colspan="2"> </td></tr>
84 <tr class="memitem:a307b5df56439539be66f92d6e39f0bce"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a307b5df56439539be66f92d6e39f0bce">connected</a> () const noexcept</td></tr>
85 <tr class="memdesc:a307b5df56439539be66f92d6e39f0bce"><td class="mdescLeft"> </td><td class="mdescRight">Returns whether the connection is still active. <a href="structsigc_1_1connection.html#a307b5df56439539be66f92d6e39f0bce">More...</a><br /></td></tr>
86 <tr class="separator:a307b5df56439539be66f92d6e39f0bce"><td class="memSeparator" colspan="2"> </td></tr>
87 <tr class="memitem:a0452bd182a61650d14a9664d6297ed1b"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a0452bd182a61650d14a9664d6297ed1b">disconnect</a> ()</td></tr>
88 <tr class="memdesc:a0452bd182a61650d14a9664d6297ed1b"><td class="mdescLeft"> </td><td class="mdescRight">Disconnects the referred slot. <a href="structsigc_1_1connection.html#a0452bd182a61650d14a9664d6297ed1b">More...</a><br /></td></tr>
89 <tr class="separator:a0452bd182a61650d14a9664d6297ed1b"><td class="memSeparator" colspan="2"> </td></tr>
90 <tr class="memitem:a810bdde9fbe7ad10bf9d578eebf929de"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a810bdde9fbe7ad10bf9d578eebf929de">empty</a> () const noexcept</td></tr>
91 <tr class="memdesc:a810bdde9fbe7ad10bf9d578eebf929de"><td class="mdescLeft"> </td><td class="mdescRight">Returns whether the connection is still active. <a href="structsigc_1_1connection.html#a810bdde9fbe7ad10bf9d578eebf929de">More...</a><br /></td></tr>
92 <tr class="separator:a810bdde9fbe7ad10bf9d578eebf929de"><td class="memSeparator" colspan="2"> </td></tr>
93 <tr class="memitem:a93215e1ea86c5fd0a465b2c4dba1257e"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a93215e1ea86c5fd0a465b2c4dba1257e">operator bool</a> () noexcept</td></tr>
94 <tr class="memdesc:a93215e1ea86c5fd0a465b2c4dba1257e"><td class="mdescLeft"> </td><td class="mdescRight">Returns whether the connection is still active. <a href="structsigc_1_1connection.html#a93215e1ea86c5fd0a465b2c4dba1257e">More...</a><br /></td></tr>
95 <tr class="separator:a93215e1ea86c5fd0a465b2c4dba1257e"><td class="memSeparator" colspan="2"> </td></tr>
96 <tr class="memitem:a016094b53bafdc9ce593febb68cb00a5"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1connection.html">connection</a> & </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> & c)</td></tr>
97 <tr class="memdesc:a016094b53bafdc9ce593febb68cb00a5"><td class="mdescLeft"> </td><td class="mdescRight">Overrides this connection object copying another one. <a href="structsigc_1_1connection.html#a016094b53bafdc9ce593febb68cb00a5">More...</a><br /></td></tr>
98 <tr class="separator:a016094b53bafdc9ce593febb68cb00a5"><td class="memSeparator" colspan="2"> </td></tr>
99 <tr class="memitem:adee4ffd4b1669b4726fd9afc36330c14"><td class="memTemplParams" colspan="2">template<typename T_slot > </td></tr>
100 <tr class="memitem:adee4ffd4b1669b4726fd9afc36330c14"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1connection.html">connection</a> & </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>< T_slot > & it)</td></tr>
101 <tr class="memdesc:adee4ffd4b1669b4726fd9afc36330c14"><td class="mdescLeft"> </td><td class="mdescRight">Overrides this connection object with another slot list iterator. <a href="structsigc_1_1connection.html#adee4ffd4b1669b4726fd9afc36330c14">More...</a><br /></td></tr>
102 <tr class="separator:adee4ffd4b1669b4726fd9afc36330c14"><td class="memSeparator" colspan="2"> </td></tr>
103 <tr class="memitem:a15abcbfa76f1e5d8601cf4ad4176ed50"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#a15abcbfa76f1e5d8601cf4ad4176ed50">unblock</a> () noexcept</td></tr>
104 <tr class="memdesc:a15abcbfa76f1e5d8601cf4ad4176ed50"><td class="mdescLeft"> </td><td class="mdescRight">Unsets the blocking state of this connection. <a href="structsigc_1_1connection.html#a15abcbfa76f1e5d8601cf4ad4176ed50">More...</a><br /></td></tr>
105 <tr class="separator:a15abcbfa76f1e5d8601cf4ad4176ed50"><td class="memSeparator" colspan="2"> </td></tr>
106 </table><table class="memberdecls">
107 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
108 Static Public Member Functions</h2></td></tr>
109 <tr class="memitem:ad45fe90d68fe295e76e130b070e97070"><td class="memItemLeft" align="right" valign="top">static void * </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1connection.html#ad45fe90d68fe295e76e130b070e97070">notify</a> (void *<a class="elRef" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01635.html#a4a0b2b9455f1e2025d77ba49b3863e33">data</a>)</td></tr>
110 <tr class="memdesc:ad45fe90d68fe295e76e130b070e97070"><td class="mdescLeft"> </td><td class="mdescRight">Callback that is executed when the referred slot is destroyed. <a href="structsigc_1_1connection.html#ad45fe90d68fe295e76e130b070e97070">More...</a><br /></td></tr>
111 <tr class="separator:ad45fe90d68fe295e76e130b070e97070"><td class="memSeparator" colspan="2"> </td></tr>
113 <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
114 <div class="textblock"><p>Convinience class for safe disconnection. </p>
115 <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>
116 <p>This is possible because the connection object gets notified when the referred slot dies (<a class="el" href="structsigc_1_1connection.html#ad45fe90d68fe295e76e130b070e97070" title="Callback that is executed when the referred slot is destroyed.">notify()</a>). </p>
117 </div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
118 <a id="a95f80dbbf10fde0b851d78ec12cc2629"></a>
119 <h2 class="memtitle"><span class="permalink"><a href="#a95f80dbbf10fde0b851d78ec12cc2629">◆ </a></span>connection() <span class="overload">[1/4]</span></h2>
121 <div class="memitem">
122 <div class="memproto">
123 <table class="mlabels">
125 <td class="mlabels-left">
126 <table class="memname">
128 <td class="memname">sigc::connection::connection </td>
130 <td class="paramname"></td><td>)</td>
135 <td class="mlabels-right">
136 <span class="mlabels"><span class="mlabel">noexcept</span></span> </td>
139 </div><div class="memdoc">
141 <p>Constructs an empty connection object. </p>
145 <a id="ad13d5e3331cc9b1494e0edb8fa37fdba"></a>
146 <h2 class="memtitle"><span class="permalink"><a href="#ad13d5e3331cc9b1494e0edb8fa37fdba">◆ </a></span>connection() <span class="overload">[2/4]</span></h2>
148 <div class="memitem">
149 <div class="memproto">
150 <table class="memname">
152 <td class="memname">sigc::connection::connection </td>
154 <td class="paramtype">const <a class="el" href="structsigc_1_1connection.html">connection</a> & </td>
155 <td class="paramname"><em>c</em></td><td>)</td>
159 </div><div class="memdoc">
161 <p>Constructs a connection object copying an existing one. </p>
162 <dl class="params"><dt>Parameters</dt><dd>
163 <table class="params">
164 <tr><td class="paramname">c</td><td>The connection object to make a copy from. </td></tr>
171 <a id="ac8847ae94e0b05bed6c81f54f58deef3"></a>
172 <h2 class="memtitle"><span class="permalink"><a href="#ac8847ae94e0b05bed6c81f54f58deef3">◆ </a></span>connection() <span class="overload">[3/4]</span></h2>
174 <div class="memitem">
175 <div class="memproto">
176 <div class="memtemplate">
177 template <typename T_slot > </div>
178 <table class="mlabels">
180 <td class="mlabels-left">
181 <table class="memname">
183 <td class="memname">sigc::connection::connection </td>
185 <td class="paramtype">const <a class="el" href="structsigc_1_1slot__iterator.html">slot_iterator</a>< T_slot > & </td>
186 <td class="paramname"><em>it</em></td><td>)</td>
191 <td class="mlabels-right">
192 <span class="mlabels"><span class="mlabel">inline</span></span> </td>
195 </div><div class="memdoc">
197 <p>Constructs a connection object from a slot list iterator. </p>
198 <dl class="params"><dt>Parameters</dt><dd>
199 <table class="params">
200 <tr><td class="paramname">it</td><td>The slot list iterator to take the slot from. </td></tr>
207 <a id="a124709de26781e5ffcf8bbb5dcd621ed"></a>
208 <h2 class="memtitle"><span class="permalink"><a href="#a124709de26781e5ffcf8bbb5dcd621ed">◆ </a></span>connection() <span class="overload">[4/4]</span></h2>
210 <div class="memitem">
211 <div class="memproto">
212 <table class="mlabels">
214 <td class="mlabels-left">
215 <table class="memname">
217 <td class="memname">sigc::connection::connection </td>
219 <td class="paramtype"><a class="el" href="classsigc_1_1slot__base.html">slot_base</a> & </td>
220 <td class="paramname"><em>sl</em></td><td>)</td>
225 <td class="mlabels-right">
226 <span class="mlabels"><span class="mlabel">explicit</span></span> </td>
229 </div><div class="memdoc">
231 <p>Constructs a connection object from a slot object. </p>
232 <p>This is only useful if you create your own slot list. </p><dl class="params"><dt>Parameters</dt><dd>
233 <table class="params">
234 <tr><td class="paramname">sl</td><td>The slot to operate on. </td></tr>
241 <a id="a99678ccb2be5c20719f37e469416578a"></a>
242 <h2 class="memtitle"><span class="permalink"><a href="#a99678ccb2be5c20719f37e469416578a">◆ </a></span>~connection()</h2>
244 <div class="memitem">
245 <div class="memproto">
246 <table class="memname">
248 <td class="memname">sigc::connection::~connection </td>
250 <td class="paramname"></td><td>)</td>
254 </div><div class="memdoc">
258 <h2 class="groupheader">Member Function Documentation</h2>
259 <a id="a581ae4f2b708cb6be7b081557864d6ec"></a>
260 <h2 class="memtitle"><span class="permalink"><a href="#a581ae4f2b708cb6be7b081557864d6ec">◆ </a></span>block()</h2>
262 <div class="memitem">
263 <div class="memproto">
264 <table class="mlabels">
266 <td class="mlabels-left">
267 <table class="memname">
269 <td class="memname">bool sigc::connection::block </td>
271 <td class="paramtype">bool </td>
272 <td class="paramname"><em>should_block</em> = <code>true</code></td><td>)</td>
277 <td class="mlabels-right">
278 <span class="mlabels"><span class="mlabel">noexcept</span></span> </td>
281 </div><div class="memdoc">
283 <p>Sets or unsets the blocking state of this connection. </p>
284 <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>
285 <table class="params">
286 <tr><td class="paramname">should_block</td><td>Indicates whether the blocking state should be set or unset. </td></tr>
290 <dl class="section return"><dt>Returns</dt><dd><code>true</code> if the connection has been in blocking state before. </dd></dl>
294 <a id="a7c86964aa4b0f339db5842e6c7e604f3"></a>
295 <h2 class="memtitle"><span class="permalink"><a href="#a7c86964aa4b0f339db5842e6c7e604f3">◆ </a></span>blocked()</h2>
297 <div class="memitem">
298 <div class="memproto">
299 <table class="mlabels">
301 <td class="mlabels-left">
302 <table class="memname">
304 <td class="memname">bool sigc::connection::blocked </td>
306 <td class="paramname"></td><td>)</td>
311 <td class="mlabels-right">
312 <span class="mlabels"><span class="mlabel">noexcept</span></span> </td>
315 </div><div class="memdoc">
317 <p>Returns whether the connection is blocked. </p>
318 <dl class="section return"><dt>Returns</dt><dd><code>true</code> if the connection is blocked. </dd></dl>
322 <a id="a307b5df56439539be66f92d6e39f0bce"></a>
323 <h2 class="memtitle"><span class="permalink"><a href="#a307b5df56439539be66f92d6e39f0bce">◆ </a></span>connected()</h2>
325 <div class="memitem">
326 <div class="memproto">
327 <table class="mlabels">
329 <td class="mlabels-left">
330 <table class="memname">
332 <td class="memname">bool sigc::connection::connected </td>
334 <td class="paramname"></td><td>)</td>
339 <td class="mlabels-right">
340 <span class="mlabels"><span class="mlabel">noexcept</span></span> </td>
343 </div><div class="memdoc">
345 <p>Returns whether the connection is still active. </p>
346 <dl class="section return"><dt>Returns</dt><dd><code>true</code> if the connection is still active. </dd></dl>
350 <a id="a0452bd182a61650d14a9664d6297ed1b"></a>
351 <h2 class="memtitle"><span class="permalink"><a href="#a0452bd182a61650d14a9664d6297ed1b">◆ </a></span>disconnect()</h2>
353 <div class="memitem">
354 <div class="memproto">
355 <table class="memname">
357 <td class="memname">void sigc::connection::disconnect </td>
359 <td class="paramname"></td><td>)</td>
363 </div><div class="memdoc">
365 <p>Disconnects the referred slot. </p>
369 <a id="a810bdde9fbe7ad10bf9d578eebf929de"></a>
370 <h2 class="memtitle"><span class="permalink"><a href="#a810bdde9fbe7ad10bf9d578eebf929de">◆ </a></span>empty()</h2>
372 <div class="memitem">
373 <div class="memproto">
374 <table class="mlabels">
376 <td class="mlabels-left">
377 <table class="memname">
379 <td class="memname">bool sigc::connection::empty </td>
381 <td class="paramname"></td><td>)</td>
386 <td class="mlabels-right">
387 <span class="mlabels"><span class="mlabel">noexcept</span></span> </td>
390 </div><div class="memdoc">
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>
397 <a id="ad45fe90d68fe295e76e130b070e97070"></a>
398 <h2 class="memtitle"><span class="permalink"><a href="#ad45fe90d68fe295e76e130b070e97070">◆ </a></span>notify()</h2>
400 <div class="memitem">
401 <div class="memproto">
402 <table class="mlabels">
404 <td class="mlabels-left">
405 <table class="memname">
407 <td class="memname">static void* sigc::connection::notify </td>
409 <td class="paramtype">void * </td>
410 <td class="paramname"><em>data</em></td><td>)</td>
415 <td class="mlabels-right">
416 <span class="mlabels"><span class="mlabel">static</span></span> </td>
419 </div><div class="memdoc">
421 <p>Callback that is executed when the referred slot is destroyed. </p>
422 <dl class="params"><dt>Parameters</dt><dd>
423 <table class="params">
424 <tr><td class="paramname">data</td><td>The connection object notified (<code>this</code>). </td></tr>
431 <a id="a93215e1ea86c5fd0a465b2c4dba1257e"></a>
432 <h2 class="memtitle"><span class="permalink"><a href="#a93215e1ea86c5fd0a465b2c4dba1257e">◆ </a></span>operator bool()</h2>
434 <div class="memitem">
435 <div class="memproto">
436 <table class="mlabels">
438 <td class="mlabels-left">
439 <table class="memname">
441 <td class="memname">sigc::connection::operator bool </td>
443 <td class="paramname"></td><td>)</td>
448 <td class="mlabels-right">
449 <span class="mlabels"><span class="mlabel">explicit</span><span class="mlabel">noexcept</span></span> </td>
452 </div><div class="memdoc">
454 <p>Returns whether the connection is still active. </p>
455 <dl class="section return"><dt>Returns</dt><dd><code>true</code> if the connection is still active. </dd></dl>
459 <a id="a016094b53bafdc9ce593febb68cb00a5"></a>
460 <h2 class="memtitle"><span class="permalink"><a href="#a016094b53bafdc9ce593febb68cb00a5">◆ </a></span>operator=() <span class="overload">[1/2]</span></h2>
462 <div class="memitem">
463 <div class="memproto">
464 <table class="memname">
466 <td class="memname"><a class="el" href="structsigc_1_1connection.html">connection</a>& sigc::connection::operator= </td>
468 <td class="paramtype">const <a class="el" href="structsigc_1_1connection.html">connection</a> & </td>
469 <td class="paramname"><em>c</em></td><td>)</td>
473 </div><div class="memdoc">
475 <p>Overrides this connection object copying another one. </p>
476 <dl class="params"><dt>Parameters</dt><dd>
477 <table class="params">
478 <tr><td class="paramname">c</td><td>The connection object to make a copy from. </td></tr>
485 <a id="adee4ffd4b1669b4726fd9afc36330c14"></a>
486 <h2 class="memtitle"><span class="permalink"><a href="#adee4ffd4b1669b4726fd9afc36330c14">◆ </a></span>operator=() <span class="overload">[2/2]</span></h2>
488 <div class="memitem">
489 <div class="memproto">
490 <div class="memtemplate">
491 template <typename T_slot > </div>
492 <table class="mlabels">
494 <td class="mlabels-left">
495 <table class="memname">
497 <td class="memname"><a class="el" href="structsigc_1_1connection.html">connection</a>& sigc::connection::operator= </td>
499 <td class="paramtype">const <a class="el" href="structsigc_1_1slot__iterator.html">slot_iterator</a>< T_slot > & </td>
500 <td class="paramname"><em>it</em></td><td>)</td>
505 <td class="mlabels-right">
506 <span class="mlabels"><span class="mlabel">inline</span></span> </td>
509 </div><div class="memdoc">
511 <p>Overrides this connection object with another slot list iterator. </p>
512 <dl class="params"><dt>Parameters</dt><dd>
513 <table class="params">
514 <tr><td class="paramname">it</td><td>The new slot list iterator to take the slot from. </td></tr>
521 <a id="a15abcbfa76f1e5d8601cf4ad4176ed50"></a>
522 <h2 class="memtitle"><span class="permalink"><a href="#a15abcbfa76f1e5d8601cf4ad4176ed50">◆ </a></span>unblock()</h2>
524 <div class="memitem">
525 <div class="memproto">
526 <table class="mlabels">
528 <td class="mlabels-left">
529 <table class="memname">
531 <td class="memname">bool sigc::connection::unblock </td>
533 <td class="paramname"></td><td>)</td>
538 <td class="mlabels-right">
539 <span class="mlabels"><span class="mlabel">noexcept</span></span> </td>
542 </div><div class="memdoc">
544 <p>Unsets the blocking state of this connection. </p>
545 <dl class="section return"><dt>Returns</dt><dd><code>true</code> if the connection has been in blocking state before. </dd></dl>
549 </div><!-- contents -->
550 <!-- start footer part -->
551 <hr class="footer"/><address class="footer"><small>
552 Generated on Fri Feb 11 2022 15:40:58 for libsigc++ by <a href="https://www.doxygen.org/index.html"><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.9.1