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<p>Base class for the <a class="el" href="classsigc_1_1signal.html" title="Convenience wrapper for the numbered sigc::signal# templates. ">sigc::signal</a># templates.
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<p><code>#include <sigc++/signal_base.h></code></p>
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Inheritance diagram for sigc::signal_base:</div>
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Public Types</h2></td></tr>
<tr class="memitem:aa60e22abd088b6cde2dd50fb3f228aa4"><td class="memItemLeft" align="right" valign="top">typedef std::size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#aa60e22abd088b6cde2dd50fb3f228aa4">size_type</a></td></tr>
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<tr class="memitem:a3338954d7565534bd945290b798e13ed inherit pub_types_structsigc_1_1trackable"><td class="memItemLeft" align="right" valign="top">typedef internal::func_destroy_notify </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1trackable.html#a3338954d7565534bd945290b798e13ed">func_destroy_notify</a></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:aff65198ddcb4fbccb644ff853e663e0e"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#aff65198ddcb4fbccb644ff853e663e0e">signal_base</a> () noexcept</td></tr>
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<tr class="memitem:a761e95b8c7b460664d3338ed3eb39543"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a761e95b8c7b460664d3338ed3eb39543">signal_base</a> (const <a class="el" href="structsigc_1_1signal__base.html">signal_base</a>& src) noexcept</td></tr>
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<tr class="memitem:a9f8570c89cd5c0b35613570a5ea80154"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a9f8570c89cd5c0b35613570a5ea80154">signal_base</a> (<a class="el" href="structsigc_1_1signal__base.html">signal_base</a>&& src)</td></tr>
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<tr class="memitem:afa2e5807537c989b430015e5ae05a357"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#afa2e5807537c989b430015e5ae05a357">~signal_base</a> ()</td></tr>
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<tr class="memitem:a52fda4806ec9dbc02baa95ce70c13fb0"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a52fda4806ec9dbc02baa95ce70c13fb0">block</a> (bool should_block=true) noexcept</td></tr>
<tr class="memdesc:a52fda4806ec9dbc02baa95ce70c13fb0"><td class="mdescLeft"> </td><td class="mdescRight">Sets the blocking state of all slots in the list. <a href="#a52fda4806ec9dbc02baa95ce70c13fb0">More...</a><br /></td></tr>
<tr class="separator:a52fda4806ec9dbc02baa95ce70c13fb0"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a228da4dd1eac6905dafbc5697086e503"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a228da4dd1eac6905dafbc5697086e503">blocked</a> () const noexcept</td></tr>
<tr class="memdesc:a228da4dd1eac6905dafbc5697086e503"><td class="mdescLeft"> </td><td class="mdescRight">Returns whether all slots in the list are blocked. <a href="#a228da4dd1eac6905dafbc5697086e503">More...</a><br /></td></tr>
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<tr class="memitem:a17597d66e680d222248c523985f0afd6"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a17597d66e680d222248c523985f0afd6">clear</a> ()</td></tr>
<tr class="memdesc:a17597d66e680d222248c523985f0afd6"><td class="mdescLeft"> </td><td class="mdescRight">Empties the list of slots. <a href="#a17597d66e680d222248c523985f0afd6">More...</a><br /></td></tr>
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<tr class="memitem:a24e7fc4e07ac19cebafe8e3bd71bfe94"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a24e7fc4e07ac19cebafe8e3bd71bfe94">empty</a> () const noexcept</td></tr>
<tr class="memdesc:a24e7fc4e07ac19cebafe8e3bd71bfe94"><td class="mdescLeft"> </td><td class="mdescRight">Returns whether the list of slots is empty. <a href="#a24e7fc4e07ac19cebafe8e3bd71bfe94">More...</a><br /></td></tr>
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<tr class="memitem:a90b36a7b33e107ce0af0de895e0df286"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1signal__base.html">signal_base</a>& </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a90b36a7b33e107ce0af0de895e0df286">operator=</a> (const <a class="el" href="structsigc_1_1signal__base.html">signal_base</a>& src)</td></tr>
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<tr class="memitem:a277a34edf44207fb4784807eac5872c6"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1signal__base.html">signal_base</a>& </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a277a34edf44207fb4784807eac5872c6">operator=</a> (<a class="el" href="structsigc_1_1signal__base.html">signal_base</a>&& src)</td></tr>
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<tr class="memitem:a0725416f747d6db3c57fa318a9f887a8"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1signal__base.html#aa60e22abd088b6cde2dd50fb3f228aa4">size_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a0725416f747d6db3c57fa318a9f887a8">size</a> () const noexcept</td></tr>
<tr class="memdesc:a0725416f747d6db3c57fa318a9f887a8"><td class="mdescLeft"> </td><td class="mdescRight">Returns the number of slots in the list. <a href="#a0725416f747d6db3c57fa318a9f887a8">More...</a><br /></td></tr>
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<tr class="memitem:aebb7ac69ea745cd60c0505f8d553d27f"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#aebb7ac69ea745cd60c0505f8d553d27f">unblock</a> () noexcept</td></tr>
<tr class="memdesc:aebb7ac69ea745cd60c0505f8d553d27f"><td class="mdescLeft"> </td><td class="mdescRight">Unsets the blocking state of all slots in the list. <a href="#aebb7ac69ea745cd60c0505f8d553d27f">More...</a><br /></td></tr>
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<tr class="inherit_header pub_methods_structsigc_1_1trackable"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_structsigc_1_1trackable')"><img src="closed.png" alt="-"/> Public Member Functions inherited from <a class="el" href="structsigc_1_1trackable.html">sigc::trackable</a></td></tr>
<tr class="memitem:a7e1348841e762fb41b41c6f2ce9fa073 inherit pub_methods_structsigc_1_1trackable"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1trackable.html#a7e1348841e762fb41b41c6f2ce9fa073">trackable</a> () noexcept</td></tr>
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<tr class="memitem:ac8431d9452c9698a012597e6560c72fa inherit pub_methods_structsigc_1_1trackable"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1trackable.html#ac8431d9452c9698a012597e6560c72fa">trackable</a> (const <a class="el" href="structsigc_1_1trackable.html">trackable</a>& src) noexcept</td></tr>
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<tr class="memitem:aba42ed8afb6598106cf68c18a7387f18 inherit pub_methods_structsigc_1_1trackable"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1trackable.html#aba42ed8afb6598106cf68c18a7387f18">trackable</a> (<a class="el" href="structsigc_1_1trackable.html">trackable</a>&& src)</td></tr>
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<tr class="memitem:a75587da09e30031db7a2519843f1f4fb inherit pub_methods_structsigc_1_1trackable"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1trackable.html#a75587da09e30031db7a2519843f1f4fb">~trackable</a> ()</td></tr>
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<tr class="memitem:ab14931670837728e49bb5ca88fb16db5 inherit pub_methods_structsigc_1_1trackable"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1trackable.html#ab14931670837728e49bb5ca88fb16db5">add_destroy_notify_callback</a> (void* data, <a class="el" href="structsigc_1_1trackable.html#a3338954d7565534bd945290b798e13ed">func_destroy_notify</a> func) const </td></tr>
<tr class="memdesc:ab14931670837728e49bb5ca88fb16db5 inherit pub_methods_structsigc_1_1trackable"><td class="mdescLeft"> </td><td class="mdescRight">Add a callback that is executed (notified) when the trackable object is detroyed. <a href="#ab14931670837728e49bb5ca88fb16db5">More...</a><br /></td></tr>
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<tr class="memitem:af2e23cfe7adc1ca844a3350bbac557cb inherit pub_methods_structsigc_1_1trackable"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1trackable.html#af2e23cfe7adc1ca844a3350bbac557cb">notify_callbacks</a> ()</td></tr>
<tr class="memdesc:af2e23cfe7adc1ca844a3350bbac557cb inherit pub_methods_structsigc_1_1trackable"><td class="mdescLeft"> </td><td class="mdescRight">Execute and remove all previously installed callbacks. <a href="#af2e23cfe7adc1ca844a3350bbac557cb">More...</a><br /></td></tr>
<tr class="separator:af2e23cfe7adc1ca844a3350bbac557cb inherit pub_methods_structsigc_1_1trackable"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a7494fbad23a65932ff1457d00d4edaf5 inherit pub_methods_structsigc_1_1trackable"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1trackable.html">trackable</a>& </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1trackable.html#a7494fbad23a65932ff1457d00d4edaf5">operator=</a> (const <a class="el" href="structsigc_1_1trackable.html">trackable</a>& src)</td></tr>
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<tr class="memitem:ac3d61cdb452dc46fcdc8a8d42d9c079d inherit pub_methods_structsigc_1_1trackable"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1trackable.html">trackable</a>& </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1trackable.html#ac3d61cdb452dc46fcdc8a8d42d9c079d">operator=</a> (<a class="el" href="structsigc_1_1trackable.html">trackable</a>&& src)</td></tr>
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<tr class="memitem:a8b9dffa8a50ff13ba33e6c7f10468e2b inherit pub_methods_structsigc_1_1trackable"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1trackable.html#a8b9dffa8a50ff13ba33e6c7f10468e2b">remove_destroy_notify_callback</a> (void* data) const </td></tr>
<tr class="memdesc:a8b9dffa8a50ff13ba33e6c7f10468e2b inherit pub_methods_structsigc_1_1trackable"><td class="mdescLeft"> </td><td class="mdescRight">Remove a callback previously installed with <a class="el" href="structsigc_1_1trackable.html#ab14931670837728e49bb5ca88fb16db5" title="Add a callback that is executed (notified) when the trackable object is detroyed. ...">add_destroy_notify_callback()</a>. <a href="#a8b9dffa8a50ff13ba33e6c7f10468e2b">More...</a><br /></td></tr>
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</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-types"></a>
Protected Types</h2></td></tr>
<tr class="memitem:a328b132e5dfb99dbc3aae1e5c3bb0981"><td class="memItemLeft" align="right" valign="top">typedef <a class="el" href="structsigc_1_1slot__iterator.html">internal::signal_impl::iterator_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a></td></tr>
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</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-methods"></a>
Protected Member Functions</h2></td></tr>
<tr class="memitem:a5c89a76a27d69c512f554b841b1bd08a"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a5c89a76a27d69c512f554b841b1bd08a">connect</a> (const <a class="el" href="classsigc_1_1slot__base.html">slot_base</a>& slot_)</td></tr>
<tr class="memdesc:a5c89a76a27d69c512f554b841b1bd08a"><td class="mdescLeft"> </td><td class="mdescRight">Adds a slot at the end of the list of slots. <a href="#a5c89a76a27d69c512f554b841b1bd08a">More...</a><br /></td></tr>
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<tr class="memitem:a50eab6d37728bbbf3beb21d684a72e6c"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a50eab6d37728bbbf3beb21d684a72e6c">connect</a> (<a class="el" href="classsigc_1_1slot__base.html">slot_base</a>&& slot_)</td></tr>
<tr class="memdesc:a50eab6d37728bbbf3beb21d684a72e6c"><td class="mdescLeft"> </td><td class="mdescRight">Adds a slot at the end of the list of slots. <a href="#a50eab6d37728bbbf3beb21d684a72e6c">More...</a><br /></td></tr>
<tr class="separator:a50eab6d37728bbbf3beb21d684a72e6c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a21efc57eea29c3139855909ad4807984"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a21efc57eea29c3139855909ad4807984">erase</a> (<a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> i)</td></tr>
<tr class="memdesc:a21efc57eea29c3139855909ad4807984"><td class="mdescLeft"> </td><td class="mdescRight">Removes the slot at the given position from the list of slots. <a href="#a21efc57eea29c3139855909ad4807984">More...</a><br /></td></tr>
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<tr class="memitem:ab1b7d9bc2a59c4c67d0123a65a7baab9"><td class="memItemLeft" align="right" valign="top">internal::signal_impl* </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#ab1b7d9bc2a59c4c67d0123a65a7baab9">impl</a> () const </td></tr>
<tr class="memdesc:ab1b7d9bc2a59c4c67d0123a65a7baab9"><td class="mdescLeft"> </td><td class="mdescRight">Returns the signal_impl object encapsulating the list of slots. <a href="#ab1b7d9bc2a59c4c67d0123a65a7baab9">More...</a><br /></td></tr>
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<tr class="memitem:a87da23ad801faa9e2b6b4be2a747e757"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a87da23ad801faa9e2b6b4be2a747e757">insert</a> (<a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> i, const <a class="el" href="classsigc_1_1slot__base.html">slot_base</a>& slot_)</td></tr>
<tr class="memdesc:a87da23ad801faa9e2b6b4be2a747e757"><td class="mdescLeft"> </td><td class="mdescRight">Adds a slot at the given position into the list of slots. <a href="#a87da23ad801faa9e2b6b4be2a747e757">More...</a><br /></td></tr>
<tr class="separator:a87da23ad801faa9e2b6b4be2a747e757"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aa80c33868910139dd2f511afcc31b687"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#aa80c33868910139dd2f511afcc31b687">insert</a> (<a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> i, <a class="el" href="classsigc_1_1slot__base.html">slot_base</a>&& slot_)</td></tr>
<tr class="memdesc:aa80c33868910139dd2f511afcc31b687"><td class="mdescLeft"> </td><td class="mdescRight">Adds a slot at the given position into the list of slots. <a href="#aa80c33868910139dd2f511afcc31b687">More...</a><br /></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-attribs"></a>
Protected Attributes</h2></td></tr>
<tr class="memitem:a747d448c28fd256ef580d165eb69f17a"><td class="memItemLeft" align="right" valign="top">internal::signal_impl* </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1signal__base.html#a747d448c28fd256ef580d165eb69f17a">impl_</a></td></tr>
<tr class="memdesc:a747d448c28fd256ef580d165eb69f17a"><td class="mdescLeft"> </td><td class="mdescRight">The signal_impl object encapsulating the slot list. <a href="#a747d448c28fd256ef580d165eb69f17a">More...</a><br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Base class for the <a class="el" href="classsigc_1_1signal.html" title="Convenience wrapper for the numbered sigc::signal# templates. ">sigc::signal</a># templates. </p>
<p><a class="el" href="structsigc_1_1signal__base.html" title="Base class for the sigc::signal# templates. ">signal_base</a> integrates most of the interface of the derived <a class="el" href="classsigc_1_1signal.html" title="Convenience wrapper for the numbered sigc::signal# templates. ">sigc::signal</a># templates. The implementation, however, resides in sigc::internal::signal_impl. A sigc::internal::signal_impl object is dynamically allocated from <a class="el" href="structsigc_1_1signal__base.html" title="Base class for the sigc::signal# templates. ">signal_base</a> when first connecting a slot to the signal. This ensures that empty signals don't waste memory.</p>
<p>sigc::internal::signal_impl is reference-counted. When a <a class="el" href="classsigc_1_1signal.html" title="Convenience wrapper for the numbered sigc::signal# templates. ">sigc::signal</a># object is copied, the reference count of its sigc::internal::signal_impl object is incremented. Both <a class="el" href="classsigc_1_1signal.html" title="Convenience wrapper for the numbered sigc::signal# templates. ">sigc::signal</a># objects then refer to the same sigc::internal::signal_impl object. </p>
</div><h2 class="groupheader">Member Typedef Documentation</h2>
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<td class="memname">typedef <a class="el" href="structsigc_1_1slot__iterator.html">internal::signal_impl::iterator_type</a> <a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">sigc::signal_base::iterator_type</a></td>
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<td class="memname">typedef std::size_t <a class="el" href="structsigc_1_1signal__base.html#aa60e22abd088b6cde2dd50fb3f228aa4">sigc::signal_base::size_type</a></td>
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<td class="memname">sigc::signal_base::signal_base </td>
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<td class="paramname"></td><td>)</td>
<td></td>
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<td class="memname">sigc::signal_base::signal_base </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="structsigc_1_1signal__base.html">signal_base</a>& </td>
<td class="paramname"><em>src</em></td><td>)</td>
<td></td>
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<td class="memname">sigc::signal_base::signal_base </td>
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<td class="paramtype"><a class="el" href="structsigc_1_1signal__base.html">signal_base</a>&& </td>
<td class="paramname"><em>src</em></td><td>)</td>
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<td class="memname">sigc::signal_base::~signal_base </td>
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<td class="memname">void sigc::signal_base::block </td>
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<td class="paramtype">bool </td>
<td class="paramname"><em>should_block</em> = <code>true</code></td><td>)</td>
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<p>Sets the blocking state of all slots in the list. </p>
<p>If <em>should_block</em> is <code>true</code> then the blocking state is set. Subsequent emissions of the signal don't invoke the functors contained in the slots until <a class="el" href="structsigc_1_1signal__base.html#aebb7ac69ea745cd60c0505f8d553d27f" title="Unsets the blocking state of all slots in the list. ">unblock()</a> or <a class="el" href="structsigc_1_1signal__base.html#a52fda4806ec9dbc02baa95ce70c13fb0" title="Sets the blocking state of all slots in the list. ">block()</a> with <em>should_block</em> = <code>false</code> is called. <a class="el" href="classsigc_1_1slot__base.html#a657a8473164c963a5ca4828c88121bb9" title="Sets the blocking state. ">sigc::slot_base::block()</a> and <a class="el" href="classsigc_1_1slot__base.html#a25ad0bd4d2cea4dbfcd09f7d393d266d" title="Unsets the blocking state. ">sigc::slot_base::unblock()</a> can change the blocking state of individual slots. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">should_block</td><td>Indicates whether the blocking state should be set or unset.</td></tr>
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</dd>
</dl>
<dl class="since_2_4"><dt><b><a class="el" href="since_2_4.html#_since_2_4000004">Since libsigc++ 2.4:</a></b></dt><dd></dd></dl>
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<td class="memname">bool sigc::signal_base::blocked </td>
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<td class="paramname"></td><td>)</td>
<td> const</td>
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<p>Returns whether all slots in the list are blocked. </p>
<dl class="section return"><dt>Returns</dt><dd><code>true</code> if all slots are blocked or the list is empty.</dd></dl>
<dl class="since_2_4"><dt><b><a class="el" href="since_2_4.html#_since_2_4000003">Since libsigc++ 2.4:</a></b></dt><dd></dd></dl>
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<td class="memname">void sigc::signal_base::clear </td>
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<p>Empties the list of slots. </p>
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<td class="memname"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> sigc::signal_base::connect </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classsigc_1_1slot__base.html">slot_base</a>& </td>
<td class="paramname"><em>slot_</em></td><td>)</td>
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<p>Adds a slot at the end of the list of slots. </p>
<p>With <a class="el" href="structsigc_1_1signal__base.html#a5c89a76a27d69c512f554b841b1bd08a" title="Adds a slot at the end of the list of slots. ">connect()</a>, slots can also be added during signal emission. In this case, they won't be executed until the next emission occurs. </p><dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">slot_</td><td>The slot to add to the list of slots. </td></tr>
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</dd>
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<dl class="section return"><dt>Returns</dt><dd>An iterator pointing to the new slot in the list. </dd></dl>
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<td class="memname"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> sigc::signal_base::connect </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classsigc_1_1slot__base.html">slot_base</a>&& </td>
<td class="paramname"><em>slot_</em></td><td>)</td>
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<p>Adds a slot at the end of the list of slots. </p>
<p>With <a class="el" href="structsigc_1_1signal__base.html#a5c89a76a27d69c512f554b841b1bd08a" title="Adds a slot at the end of the list of slots. ">connect()</a>, slots can also be added during signal emission. In this case, they won't be executed until the next emission occurs. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">slot_</td><td>The slot to add to the list of slots. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>An iterator pointing to the new slot in the list.</dd></dl>
<dl class="since_2_8"><dt><b><a class="el" href="since_2_8.html#_since_2_8000003">Since libsigc++ 2.8:</a></b></dt><dd></dd></dl>
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<td class="memname">bool sigc::signal_base::empty </td>
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<td class="paramname"></td><td>)</td>
<td> const</td>
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<p>Returns whether the list of slots is empty. </p>
<dl class="section return"><dt>Returns</dt><dd><code>true</code> if the list of slots is empty. </dd></dl>
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<td class="memname"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> sigc::signal_base::erase </td>
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<td class="paramtype"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> </td>
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<p>Removes the slot at the given position from the list of slots. </p>
<p>Note that this function does not work during signal emission! </p><dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">i</td><td>An iterator pointing to the slot to be removed. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>An iterator pointing to the slot in the list after the one removed. </dd></dl>
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<td class="memname">internal::signal_impl* sigc::signal_base::impl </td>
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<p>Returns the signal_impl object encapsulating the list of slots. </p>
<dl class="section return"><dt>Returns</dt><dd>The signal_impl object encapsulating the list of slots. </dd></dl>
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<td class="memname"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> sigc::signal_base::insert </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> </td>
<td class="paramname"><em>i</em>, </td>
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<p>Adds a slot at the given position into the list of slots. </p>
<p>Note that this function does not work during signal emission! </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">i</td><td>An iterator indicating the position where <em>slot_</em> should be inserted. </td></tr>
<tr><td class="paramname">slot_</td><td>The slot to add to the list of slots. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>An iterator pointing to the new slot in the list. </dd></dl>
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<td class="memname"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> sigc::signal_base::insert </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structsigc_1_1signal__base.html#a328b132e5dfb99dbc3aae1e5c3bb0981">iterator_type</a> </td>
<td class="paramname"><em>i</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="classsigc_1_1slot__base.html">slot_base</a>&& </td>
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<p>Adds a slot at the given position into the list of slots. </p>
<p>Note that this function does not work during signal emission! </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">i</td><td>An iterator indicating the position where <em>slot_</em> should be inserted. </td></tr>
<tr><td class="paramname">slot_</td><td>The slot to add to the list of slots. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>An iterator pointing to the new slot in the list.</dd></dl>
<dl class="since_2_8"><dt><b><a class="el" href="since_2_8.html#_since_2_8000004">Since libsigc++ 2.8:</a></b></dt><dd></dd></dl>
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<td class="memname"><a class="el" href="structsigc_1_1signal__base.html">signal_base</a>& sigc::signal_base::operator= </td>
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<td class="paramtype">const <a class="el" href="structsigc_1_1signal__base.html">signal_base</a>& </td>
<td class="paramname"><em>src</em></td><td>)</td>
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<td class="memname"><a class="el" href="structsigc_1_1signal__base.html">signal_base</a>& sigc::signal_base::operator= </td>
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<td class="paramtype"><a class="el" href="structsigc_1_1signal__base.html">signal_base</a>&& </td>
<td class="paramname"><em>src</em></td><td>)</td>
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<td class="memname"><a class="el" href="structsigc_1_1signal__base.html#aa60e22abd088b6cde2dd50fb3f228aa4">size_type</a> sigc::signal_base::size </td>
<td>(</td>
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<td> const</td>
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<p>Returns the number of slots in the list. </p>
<dl class="section return"><dt>Returns</dt><dd>The number of slots in the list. </dd></dl>
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<td class="memname">void sigc::signal_base::unblock </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
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<p>Unsets the blocking state of all slots in the list. </p>
<dl class="since_2_4"><dt><b><a class="el" href="since_2_4.html#_since_2_4000005">Since libsigc++ 2.4:</a></b></dt><dd></dd></dl>
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<h2 class="groupheader">Member Data Documentation</h2>
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<td class="memname">internal::signal_impl* sigc::signal_base::impl_</td>
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<p>The signal_impl object encapsulating the slot list. </p>
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