untracked/docs/reference/html/structsigc_1_1trackable.html

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  23    &#160;<span id="projectnumber">2.10.8</span>
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  52 <div class="title">sigc::trackable Struct Reference<div class="ingroups"><a class="el" href="group__signal.html">Signals</a></div></div>  </div>
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  55
  56 <p>Base class for objects with auto-disconnection.
  57  <a href="structsigc_1_1trackable.html#details">More...</a></p>
  58
  59 <p><code>#include &lt;sigc++/trackable.h&gt;</code></p>
  60 <div class="dynheader">
  61 Inheritance diagram for sigc::trackable:</div>
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 117 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
 118 Public Types</h2></td></tr>
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 123 Public Member Functions</h2></td></tr>
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 141 <tr class="separator:ac3d61cdb452dc46fcdc8a8d42d9c079d"><td class="memSeparator" colspan="2">&#160;</td></tr>
 142 <tr class="memitem:ad1c1845ff5b356f13b32180077f83cff"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1trackable.html#ad1c1845ff5b356f13b32180077f83cff">remove_destroy_notify_callback</a> (void *<a class="elRef" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01635.html#a4a0b2b9455f1e2025d77ba49b3863e33">data</a>) const</td></tr>
 143 <tr class="memdesc:ad1c1845ff5b356f13b32180077f83cff"><td class="mdescLeft">&#160;</td><td class="mdescRight">Remove a callback previously installed with <a class="el" href="structsigc_1_1trackable.html#aed95b40846f61b4f202348c71d5913ea" title="Add a callback that is executed (notified) when the trackable object is detroyed.">add_destroy_notify_callback()</a>.  <a href="structsigc_1_1trackable.html#ad1c1845ff5b356f13b32180077f83cff">More...</a><br /></td></tr>
 144 <tr class="separator:ad1c1845ff5b356f13b32180077f83cff"><td class="memSeparator" colspan="2">&#160;</td></tr>
 145 </table>
 146 <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
 147 <div class="textblock"><p>Base class for objects with auto-disconnection. </p>
 148 <p>trackable must be inherited when objects shall automatically invalidate slots referring to them on destruction. A slot built from a member function of a trackable derived type installs a callback that is invoked when the trackable object is destroyed or overwritten.</p>
 149 <p><a class="el" href="structsigc_1_1trackable.html#aed95b40846f61b4f202348c71d5913ea" title="Add a callback that is executed (notified) when the trackable object is detroyed.">add_destroy_notify_callback()</a> and <a class="el" href="structsigc_1_1trackable.html#ad1c1845ff5b356f13b32180077f83cff" title="Remove a callback previously installed with add_destroy_notify_callback().">remove_destroy_notify_callback()</a> can be used to manually install and remove callbacks when notification of the object dying is needed.</p>
 150 <p><a class="el" href="structsigc_1_1trackable.html#af2e23cfe7adc1ca844a3350bbac557cb" title="Execute and remove all previously installed callbacks.">notify_callbacks()</a> invokes and removes all previously installed callbacks and can therefore be used to disconnect from all signals.</p>
 151 <p>Note that there is no virtual destructor. Don't use <code>trackable*</code> as pointer type for managing your data or the destructors of your derived types won't be called when deleting your objects. </p>
 152 </div><h2 class="groupheader">Member Typedef Documentation</h2>
 153 <a id="a3338954d7565534bd945290b798e13ed"></a>
 154 <h2 class="memtitle"><span class="permalink"><a href="#a3338954d7565534bd945290b798e13ed">&#9670;&#160;</a></span>func_destroy_notify</h2>
 155
 156 <div class="memitem">
 157 <div class="memproto">
 158       <table class="memname">
 159         <tr>
 160           <td class="memname">typedef internal::func_destroy_notify <a class="el" href="structsigc_1_1trackable.html#a3338954d7565534bd945290b798e13ed">sigc::trackable::func_destroy_notify</a></td>
 161         </tr>
 162       </table>
 163 </div><div class="memdoc">
 164
 165 </div>
 166 </div>
 167 <h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
 168 <a id="a7e1348841e762fb41b41c6f2ce9fa073"></a>
 169 <h2 class="memtitle"><span class="permalink"><a href="#a7e1348841e762fb41b41c6f2ce9fa073">&#9670;&#160;</a></span>trackable() <span class="overload">[1/3]</span></h2>
 170
 171 <div class="memitem">
 172 <div class="memproto">
 173 <table class="mlabels">
 174   <tr>
 175   <td class="mlabels-left">
 176       <table class="memname">
 177         <tr>
 178           <td class="memname">sigc::trackable::trackable </td>
 179           <td>(</td>
 180           <td class="paramname"></td><td>)</td>
 181           <td></td>
 182         </tr>
 183       </table>
 184   </td>
 185   <td class="mlabels-right">
 186 <span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>
 187   </tr>
 188 </table>
 189 </div><div class="memdoc">
 190
 191 </div>
 192 </div>
 193 <a id="ac8431d9452c9698a012597e6560c72fa"></a>
 194 <h2 class="memtitle"><span class="permalink"><a href="#ac8431d9452c9698a012597e6560c72fa">&#9670;&#160;</a></span>trackable() <span class="overload">[2/3]</span></h2>
 195
 196 <div class="memitem">
 197 <div class="memproto">
 198 <table class="mlabels">
 199   <tr>
 200   <td class="mlabels-left">
 201       <table class="memname">
 202         <tr>
 203           <td class="memname">sigc::trackable::trackable </td>
 204           <td>(</td>
 205           <td class="paramtype">const <a class="el" href="structsigc_1_1trackable.html">trackable</a> &amp;&#160;</td>
 206           <td class="paramname"><em>src</em></td><td>)</td>
 207           <td></td>
 208         </tr>
 209       </table>
 210   </td>
 211   <td class="mlabels-right">
 212 <span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>
 213   </tr>
 214 </table>
 215 </div><div class="memdoc">
 216
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 218 </div>
 219 <a id="aba42ed8afb6598106cf68c18a7387f18"></a>
 220 <h2 class="memtitle"><span class="permalink"><a href="#aba42ed8afb6598106cf68c18a7387f18">&#9670;&#160;</a></span>trackable() <span class="overload">[3/3]</span></h2>
 221
 222 <div class="memitem">
 223 <div class="memproto">
 224       <table class="memname">
 225         <tr>
 226           <td class="memname">sigc::trackable::trackable </td>
 227           <td>(</td>
 228           <td class="paramtype"><a class="el" href="structsigc_1_1trackable.html">trackable</a> &amp;&amp;&#160;</td>
 229           <td class="paramname"><em>src</em></td><td>)</td>
 230           <td></td>
 231         </tr>
 232       </table>
 233 </div><div class="memdoc">
 234
 235 </div>
 236 </div>
 237 <a id="a75587da09e30031db7a2519843f1f4fb"></a>
 238 <h2 class="memtitle"><span class="permalink"><a href="#a75587da09e30031db7a2519843f1f4fb">&#9670;&#160;</a></span>~trackable()</h2>
 239
 240 <div class="memitem">
 241 <div class="memproto">
 242       <table class="memname">
 243         <tr>
 244           <td class="memname">sigc::trackable::~trackable </td>
 245           <td>(</td>
 246           <td class="paramname"></td><td>)</td>
 247           <td></td>
 248         </tr>
 249       </table>
 250 </div><div class="memdoc">
 251
 252 </div>
 253 </div>
 254 <h2 class="groupheader">Member Function Documentation</h2>
 255 <a id="aed95b40846f61b4f202348c71d5913ea"></a>
 256 <h2 class="memtitle"><span class="permalink"><a href="#aed95b40846f61b4f202348c71d5913ea">&#9670;&#160;</a></span>add_destroy_notify_callback()</h2>
 257
 258 <div class="memitem">
 259 <div class="memproto">
 260       <table class="memname">
 261         <tr>
 262           <td class="memname">void sigc::trackable::add_destroy_notify_callback </td>
 263           <td>(</td>
 264           <td class="paramtype">void *&#160;</td>
 265           <td class="paramname"><em>data</em>, </td>
 266         </tr>
 267         <tr>
 268           <td class="paramkey"></td>
 269           <td></td>
 270           <td class="paramtype"><a class="el" href="structsigc_1_1trackable.html#a3338954d7565534bd945290b798e13ed">func_destroy_notify</a>&#160;</td>
 271           <td class="paramname"><em>func</em>&#160;</td>
 272         </tr>
 273         <tr>
 274           <td></td>
 275           <td>)</td>
 276           <td></td><td> const</td>
 277         </tr>
 278       </table>
 279 </div><div class="memdoc">
 280
 281 <p>Add a callback that is executed (notified) when the trackable object is detroyed. </p>
 282 <dl class="params"><dt>Parameters</dt><dd>
 283   <table class="params">
 284     <tr><td class="paramname">data</td><td>Passed into func upon notification. </td></tr>
 285     <tr><td class="paramname">func</td><td>Callback executed upon destruction of the object. </td></tr>
 286   </table>
 287   </dd>
 288 </dl>
 289
 290 </div>
 291 </div>
 292 <a id="af2e23cfe7adc1ca844a3350bbac557cb"></a>
 293 <h2 class="memtitle"><span class="permalink"><a href="#af2e23cfe7adc1ca844a3350bbac557cb">&#9670;&#160;</a></span>notify_callbacks()</h2>
 294
 295 <div class="memitem">
 296 <div class="memproto">
 297       <table class="memname">
 298         <tr>
 299           <td class="memname">void sigc::trackable::notify_callbacks </td>
 300           <td>(</td>
 301           <td class="paramname"></td><td>)</td>
 302           <td></td>
 303         </tr>
 304       </table>
 305 </div><div class="memdoc">
 306
 307 <p>Execute and remove all previously installed callbacks. </p>
 308
 309 </div>
 310 </div>
 311 <a id="a7494fbad23a65932ff1457d00d4edaf5"></a>
 312 <h2 class="memtitle"><span class="permalink"><a href="#a7494fbad23a65932ff1457d00d4edaf5">&#9670;&#160;</a></span>operator=() <span class="overload">[1/2]</span></h2>
 313
 314 <div class="memitem">
 315 <div class="memproto">
 316       <table class="memname">
 317         <tr>
 318           <td class="memname"><a class="el" href="structsigc_1_1trackable.html">trackable</a>&amp; sigc::trackable::operator= </td>
 319           <td>(</td>
 320           <td class="paramtype">const <a class="el" href="structsigc_1_1trackable.html">trackable</a> &amp;&#160;</td>
 321           <td class="paramname"><em>src</em></td><td>)</td>
 322           <td></td>
 323         </tr>
 324       </table>
 325 </div><div class="memdoc">
 326
 327 </div>
 328 </div>
 329 <a id="ac3d61cdb452dc46fcdc8a8d42d9c079d"></a>
 330 <h2 class="memtitle"><span class="permalink"><a href="#ac3d61cdb452dc46fcdc8a8d42d9c079d">&#9670;&#160;</a></span>operator=() <span class="overload">[2/2]</span></h2>
 331
 332 <div class="memitem">
 333 <div class="memproto">
 334       <table class="memname">
 335         <tr>
 336           <td class="memname"><a class="el" href="structsigc_1_1trackable.html">trackable</a>&amp; sigc::trackable::operator= </td>
 337           <td>(</td>
 338           <td class="paramtype"><a class="el" href="structsigc_1_1trackable.html">trackable</a> &amp;&amp;&#160;</td>
 339           <td class="paramname"><em>src</em></td><td>)</td>
 340           <td></td>
 341         </tr>
 342       </table>
 343 </div><div class="memdoc">
 344
 345 </div>
 346 </div>
 347 <a id="ad1c1845ff5b356f13b32180077f83cff"></a>
 348 <h2 class="memtitle"><span class="permalink"><a href="#ad1c1845ff5b356f13b32180077f83cff">&#9670;&#160;</a></span>remove_destroy_notify_callback()</h2>
 349
 350 <div class="memitem">
 351 <div class="memproto">
 352       <table class="memname">
 353         <tr>
 354           <td class="memname">void sigc::trackable::remove_destroy_notify_callback </td>
 355           <td>(</td>
 356           <td class="paramtype">void *&#160;</td>
 357           <td class="paramname"><em>data</em></td><td>)</td>
 358           <td> const</td>
 359         </tr>
 360       </table>
 361 </div><div class="memdoc">
 362
 363 <p>Remove a callback previously installed with <a class="el" href="structsigc_1_1trackable.html#aed95b40846f61b4f202348c71d5913ea" title="Add a callback that is executed (notified) when the trackable object is detroyed.">add_destroy_notify_callback()</a>. </p>
 364 <p>The callback is not executed. </p><dl class="params"><dt>Parameters</dt><dd>
 365   <table class="params">
 366     <tr><td class="paramname">data</td><td>Parameter passed into previous call to <a class="el" href="structsigc_1_1trackable.html#aed95b40846f61b4f202348c71d5913ea" title="Add a callback that is executed (notified) when the trackable object is detroyed.">add_destroy_notify_callback()</a>. </td></tr>
 367   </table>
 368   </dd>
 369 </dl>
 370
 371 </div>
 372 </div>
 373 </div><!-- contents -->
 374 <!-- start footer part -->
 375 <hr class="footer"/><address class="footer"><small>
 376 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
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