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<div class="code"><pre><span class="c"># CStruct Examples</span>
require <span class="s"><span class="dl">'</span><span class="k">cstruct</span><span class="dl">'</span></span>
<span class="c"># example:</span>
<span class="c"># struct Point in C\C++ (32-bit platform): </span>
<span class="c">#</span>
<span class="c"># struct Point</span>
<span class="c"># {</span>
<span class="c"># int x;</span>
<span class="c"># int y;</span>
<span class="c"># }; </span>
<span class="c"># struct Point in Ruby: </span>
<span class="r">class</span> <span class="cl">Point</span> < <span class="co">CStruct</span>
int32<span class="sy">:x</span>
int32<span class="sy">:y</span>
<span class="r">end</span>
<span class="c"># create a Point's instance</span>
point = <span class="co">Point</span>.new
<span class="c"># assign like as C language</span>
point.x = <span class="i">10</span>
point.y = <span class="i">20</span>
puts <span class="s"><span class="dl">"</span><span class="k">point.x = </span><span class="il"><span class="idl">#{</span>point.x<span class="idl">}</span></span><span class="k">,point.y = </span><span class="il"><span class="idl">#{</span>point.y<span class="idl">}</span></span><span class="dl">"</span></span>
<span class="c"># struct PointF in C\C++ (32-bit platform): </span>
<span class="c">#</span>
<span class="c"># struct PointF</span>
<span class="c"># {</span>
<span class="c"># double x;</span>
<span class="c"># double y;</span>
<span class="c"># }; </span>
<span class="c"># struct PointF in Ruby: </span>
<span class="r">class</span> <span class="cl">PointF</span> < <span class="co">CStruct</span>
double<span class="sy">:x</span>
double<span class="sy">:y</span>
<span class="r">end</span>
<span class="c"># create a PointF's instance</span>
<span class="c"># use 'block' to initialize the fields</span>
point2 = <span class="co">PointF</span>.new <span class="r">do</span> |st|
st.x = <span class="fl">10.56</span>
st.y = <span class="fl">20.78</span>
<span class="r">end</span>
puts <span class="s"><span class="dl">"</span><span class="k">sizeof(PointF) = </span><span class="il"><span class="idl">#{</span><span class="co">PointF</span>.size<span class="idl">}</span></span><span class="dl">"</span></span>
puts <span class="s"><span class="dl">"</span><span class="k">point2.x = </span><span class="il"><span class="idl">#{</span>point2.x<span class="idl">}</span></span><span class="k">,point2.y = </span><span class="il"><span class="idl">#{</span>point2.y<span class="idl">}</span></span><span class="dl">"</span></span>
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