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</h3></div></div></div>
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<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">python</span><span class="special">/</span><span class="identifier">module</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">python</span><span class="special">/</span><span class="keyword">class</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">python</span><span class="special">/</span><span class="identifier">wrapper</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">python</span><span class="special">/</span><span class="identifier">call</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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<span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">python</span><span class="special">;</span>
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<span class="comment">// Class with one pure virtual function</span>
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<span class="keyword">struct</span> <span class="identifier">P</span>
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<span class="special">{</span>
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<span class="keyword">virtual</span> <span class="special">~</span><span class="identifier">P</span><span class="special">(){}</span>
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<span class="keyword">virtual</span> <span class="keyword">char</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">f</span><span class="special">()</span> <span class="special">=</span> <span class="number">0</span><span class="special">;</span>
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<span class="keyword">char</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">g</span><span class="special">()</span> <span class="special">{</span> <span class="keyword">return</span> <span class="string">"P::g()"</span><span class="special">;</span> <span class="special">}</span>
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<span class="special">};</span>
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<span class="keyword">struct</span> <span class="identifier">PCallback</span> <span class="special">:</span> <span class="identifier">P</span><span class="special">,</span> <span class="identifier">wrapper</span><span class="special"><</span><span class="identifier">P</span><span class="special">></span>
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<span class="special">{</span>
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<span class="keyword">char</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">f</span><span class="special">()</span>
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<span class="special">{</span>
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<span class="keyword">return</span> <span class="keyword">this</span><span class="special">-></span><span class="identifier">get_override</span><span class="special">(</span><span class="string">"f"</span><span class="special">)();</span>
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<span class="special">}</span>
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<span class="special">};</span>
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<span class="comment">// Class with one non-pure virtual function</span>
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<span class="keyword">struct</span> <span class="identifier">A</span>
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<span class="special">{</span>
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<span class="keyword">virtual</span> <span class="special">~</span><span class="identifier">A</span><span class="special">(){}</span>
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<span class="keyword">virtual</span> <span class="keyword">char</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">f</span><span class="special">()</span> <span class="special">{</span> <span class="keyword">return</span> <span class="string">"A::f()"</span><span class="special">;</span> <span class="special">}</span>
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<span class="special">};</span>
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<span class="keyword">struct</span> <span class="identifier">ACallback</span> <span class="special">:</span> <span class="identifier">A</span><span class="special">,</span> <span class="identifier">wrapper</span><span class="special"><</span><span class="identifier">A</span><span class="special">></span>
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<span class="special">{</span>
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<span class="keyword">char</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">f</span><span class="special">()</span>
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<span class="special">{</span>
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<span class="keyword">if</span> <span class="special">(</span><span class="identifier">override</span> <span class="identifier">f</span> <span class="special">=</span> <span class="keyword">this</span><span class="special">-></span><span class="identifier">get_override</span><span class="special">(</span><span class="string">"f"</span><span class="special">))</span>
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<span class="keyword">return</span> <span class="identifier">f</span><span class="special">();</span>
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<span class="keyword">return</span> <span class="identifier">A</span><span class="special">::</span><span class="identifier">f</span><span class="special">();</span>
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<span class="special">}</span>
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<span class="keyword">char</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">default_f</span><span class="special">()</span> <span class="special">{</span> <span class="keyword">return</span> <span class="keyword">this</span><span class="special">-></span><span class="identifier">A</span><span class="special">::</span><span class="identifier">f</span><span class="special">();</span> <span class="special">}</span>
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<span class="special">};</span>
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<span class="identifier">BOOST_PYTHON_MODULE_INIT</span><span class="special">(</span><span class="identifier">polymorphism</span><span class="special">)</span>
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<span class="special">{</span>
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<span class="identifier">class_</span><span class="special"><</span><span class="identifier">PCallback</span><span class="special">,</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">noncopyable</span><span class="special">>(</span><span class="string">"P"</span><span class="special">)</span>
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<span class="special">.</span><span class="identifier">def</span><span class="special">(</span><span class="string">"f"</span><span class="special">,</span> <span class="identifier">pure_virtual</span><span class="special">(&</span><span class="identifier">P</span><span class="special">::</span><span class="identifier">f</span><span class="special">))</span>
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<span class="special">;</span>
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<span class="identifier">class_</span><span class="special"><</span><span class="identifier">ACallback</span><span class="special">,</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">noncopyable</span><span class="special">>(</span><span class="string">"A"</span><span class="special">)</span>
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<span class="special">.</span><span class="identifier">def</span><span class="special">(</span><span class="string">"f"</span><span class="special">,</span> <span class="special">&</span><span class="identifier">A</span><span class="special">::</span><span class="identifier">f</span><span class="special">,</span> <span class="special">&</span><span class="identifier">ACallback</span><span class="special">::</span><span class="identifier">default_f</span><span class="special">)</span>
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<span class="special">;</span>
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<span class="special">}</span>
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</pre>
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<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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<td align="right"><div class="copyright-footer">Copyright © 2002-2005, 2015 David Abrahams, Stefan Seefeld<p>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>
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</p>
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