:string get_string_property(string_propery v) <span class="keyword">const</span> = 0;
<a name="l00113"></a>00113             <span class="keyword">virtual</span> <span class="keywordtype">int</span> get_integer_property(integer_property v) <span class="keyword">const</span> = 0;
<a name="l00114"></a>00114         };
<a name="l00115"></a>00115 
<a name="l00116"></a>00116     }
<a name="l00117"></a>00117 }
<a name="l00118"></a>00118 
<a name="l00119"></a>00119 <span class="preprocessor">#ifdef BOOST_MSVC</spa