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libsigc++2.0-doc-2.2.7-1mdv2010.1.x86_64.rpm

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<h1>Slots<br/>
<small>
[<a class="el" href="group__sigcfunctors.html">Functors</a>]</small>
</h1>
<p>Slots are type-safe representations of callback methods and functions. <a href="#_details">More...</a></p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Classes</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot__base.html">sigc::slot_base</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Base type for slots. <a href="classsigc_1_1slot__base.html#_details">More...</a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot0.html">sigc::slot0&lt; T_return &gt;</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Converts an arbitrary functor to a unified type which is opaque. <a href="classsigc_1_1slot0.html#_details">More...</a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot1.html">sigc::slot1&lt; T_return, T_arg1 &gt;</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Converts an arbitrary functor to a unified type which is opaque. <a href="classsigc_1_1slot1.html#_details">More...</a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot2.html">sigc::slot2&lt; T_return, T_arg1, T_arg2 &gt;</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Converts an arbitrary functor to a unified type which is opaque. <a href="classsigc_1_1slot2.html#_details">More...</a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot3.html">sigc::slot3&lt; T_return, T_arg1, T_arg2, T_arg3 &gt;</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Converts an arbitrary functor to a unified type which is opaque. <a href="classsigc_1_1slot3.html#_details">More...</a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot4.html">sigc::slot4&lt; T_return, T_arg1, T_arg2, T_arg3, T_arg4 &gt;</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Converts an arbitrary functor to a unified type which is opaque. <a href="classsigc_1_1slot4.html#_details">More...</a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot5.html">sigc::slot5&lt; T_return, T_arg1, T_arg2, T_arg3, T_arg4, T_arg5 &gt;</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Converts an arbitrary functor to a unified type which is opaque. <a href="classsigc_1_1slot5.html#_details">More...</a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot6.html">sigc::slot6&lt; T_return, T_arg1, T_arg2, T_arg3, T_arg4, T_arg5, T_arg6 &gt;</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Converts an arbitrary functor to a unified type which is opaque. <a href="classsigc_1_1slot6.html#_details">More...</a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot7.html">sigc::slot7&lt; T_return, T_arg1, T_arg2, T_arg3, T_arg4, T_arg5, T_arg6, T_arg7 &gt;</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Converts an arbitrary functor to a unified type which is opaque. <a href="classsigc_1_1slot7.html#_details">More...</a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsigc_1_1slot.html">sigc::slot&lt; T_return, T_arg1, T_arg2, T_arg3, T_arg4, T_arg5, T_arg6, T_arg7 &gt;</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Convenience wrapper for the numbered <a class="el" href="classsigc_1_1slot.html" title="Convenience wrapper for the numbered sigc::slot# templates.">sigc::slot</a># templates. <a href="classsigc_1_1slot.html#_details">More...</a><br/></td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>Slots are type-safe representations of callback methods and functions. </p>
<p>A Slot can be constructed from any function, regardless of whether it is a global function, a member method, static, or virtual.</p>
<p>Use the <a class="el" href="group__mem__fun.html#ga7d9ea809173f48bf5c76cf1989591602" title="Creates a functor of type sigc::mem_functor0 which wraps a method.">sigc::mem_fun()</a> and <a class="el" href="group__ptr__fun.html#gada8b678665c14dc85eb32d25b7299465" title="Creates a functor of type sigc::pointer_functor0 which wraps an existing non-member...">sigc::ptr_fun()</a> template functions to get a <a class="el" href="classsigc_1_1slot.html" title="Convenience wrapper for the numbered sigc::slot# templates.">sigc::slot</a>, like so:</p>
<div class="fragment"><pre class="fragment"> <a class="code" href="classsigc_1_1slot.html" title="Convenience wrapper for the numbered sigc::slot# templates.">sigc::slot&lt;void, int&gt;</a> sl = <a class="code" href="group__mem__fun.html#ga7d9ea809173f48bf5c76cf1989591602" title="Creates a functor of type sigc::mem_functor0 which wraps a method.">sigc::mem_fun</a>(someobj,&amp; SomeClass::somemethod);
</pre></div><p>or</p>
<div class="fragment"><pre class="fragment"> <a class="code" href="classsigc_1_1slot.html" title="Convenience wrapper for the numbered sigc::slot# templates.">sigc::slot&lt;void, int&gt;</a> sl = <a class="code" href="group__ptr__fun.html#gada8b678665c14dc85eb32d25b7299465" title="Creates a functor of type sigc::pointer_functor0 which wraps an existing non-member...">sigc::ptr_fun</a>(&amp;somefunction);
</pre></div><p>or</p>
<div class="fragment"><pre class="fragment"> m_Button.signal_clicked().connect( <a class="code" href="group__mem__fun.html#ga7d9ea809173f48bf5c76cf1989591602" title="Creates a functor of type sigc::mem_functor0 which wraps a method.">sigc::mem_fun</a>(*<span class="keyword">this</span>, &amp;MyWindow::on_button_clicked) );
</pre></div><p>The compiler will complain if SomeClass::somemethod, etc. have the wrong signature.</p>
<p>You can also pass slots as method parameters where you might normally pass a function pointer. </p>
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