1<!DOCTYPE html PUBLIC '-//W3C//DTD XHTML 1.0 Strict//EN' 2'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd'> 3<html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'> 4<head> 5 <meta http-equiv='Content-Type' content='text/html; charset=utf-8'/> 6 <title>get_error_info</title> 7 <link href='reno.css' type='text/css' rel='stylesheet'/> 8</head> 9<body> 10<div class="body-0"> 11<div class="body-1"> 12<div class="body-2"> 13<div> 14<div id="boost_logo"> 15<a href="http://www.boost.org"><img style="border:0" src="../../../boost.png" alt="Boost" width="277" height="86"/></a> 16</div> 17<h1>Boost Exception</h1> 18</div> 19<!-- Copyright (c) 2006-2009 Emil Dotchevski and Reverge Studios, Inc. --> 20<!-- Distributed under the Boost Software License, Version 1.0. (See accompanying --> 21<!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) --> 22<div class="RenoIncludeDIV"><div class="RenoAutoDIV"><h3>get_error_info</h3> 23</div> 24<div class="RenoIncludeDIV"><pre>namespace 25boost 26 { 27<span class="RenoIncludeSPAN"> template <class ErrorInfo,class E> 28 typename ErrorInfo::<span class="RenoLink"><a href="error_info::value_type">error_info::value_type</a></span> const * <span class="RenoLink"><a href="get_error_info">get_error_info</a></span>( E const & x ); 29 30 template <class ErrorInfo,class E> 31 typename ErrorInfo::<span class="RenoLink"><a href="error_info::value_type">error_info::value_type</a></span> * <span class="RenoLink"><a href="get_error_info">get_error_info</a></span>( E & x );</span> 32 }</pre> 33</div><h4>Requirements:</h4> 34<div><ul><li> ErrorInfo must be an instance of the <span class="RenoLink"><a href="error_info.html">error_info</a></span> template.</li> 35<li> E must be polymorphic.</li> 36</ul></div> 37<h4>Returns:</h4> 38<div><ul><li> If dynamic_cast<boost::<span class="RenoLink"><a href="exception.html">exception</a></span> const *>(&x) is 0, or if x does not store an object of type ErrorInfo, the returned value is null.</li> 39<li> Otherwise, the returned pointer points to the stored value (use <span class="RenoLink"><a href="exception_operator_shl.html">operator<<</a></span> to store values in exception objects.) When x is destroyed, any pointers returned by <span class="RenoLink">get_error_info</span> become invalid.</li> 40</ul></div> 41<h4>Throws:</h4> 42<p>Nothing.</p> 43<h4>Note:</h4> 44<p>The interface of <span class="RenoLink">get_error_info</span> may be affected by the build <span class="RenoLink"><a href="configuration_macros.html">configuration macros</a></span>.</p> 45</div><div class="RenoAutoDIV"><div class="RenoHR"><hr/></div> 46See also: <span class="RenoPageList"><a href="BOOST_THROW_EXCEPTION.html">BOOST_THROW_EXCEPTION</a> | <a href="boost-exception.html">Boost Exception</a> | <a href="boost_exception_get_error_info_hpp.html">boost/exception/get_error_info.hpp</a> | <a href="configuration_macros.html">Configuration Macros</a> | <a href="current_exception.html">current_exception</a> | <a href="error_info.html">error_info</a> | <a href="exception.html">exception</a> | <a href="motivation.html">Motivation</a></span> 47</div> 48<!-- Copyright (c) 2006-2009 Emil Dotchevski and Reverge Studios, Inc. --> 49<!-- Distributed under the Boost Software License, Version 1.0. (See accompanying --> 50<!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) --> 51<div id="footer"> 52<p> 53<a class="logo" href="http://jigsaw.w3.org/css-validator/check/referer"><img class="logo_pic" src="valid-css.png" alt="Valid CSS" height="31" width="88"/></a> 54<a class="logo" href="http://validator.w3.org/check?uri=referer"><img class="logo_pic" src="valid-xhtml.png" alt="Valid XHTML 1.0" height="31" width="88"/></a> 55<small>Copyright (c) 2006-2009 by Emil Dotchevski and Reverge Studios, Inc.<br/> 56Distributed under the <a href="http://www.boost.org/LICENSE_1_0.txt">Boost Software License, Version 1.0</a>.</small> 57</p> 58</div> 59</div> 60</div> 61</div> 62</body> 63</html> 64
