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<title>Using JavaScript closures</title>
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<a href="#seed-SeedClosure.description" class="shortcut">Description</a>
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<h2><span class="refentrytitle"><a name="seed-SeedClosure.top_of_page"></a>Using JavaScript closures</span></h2>
<p>Using JavaScript closures — Creating and invoking closures over JavaScript functions using GClosure</p>
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<div class="refsynopsisdiv">
<a name="seed-SeedClosure.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include <seed/seed.h>
struct <a class="link" href="seed-SeedClosure.html#SeedClosure" title="struct SeedClosure">SeedClosure</a>;
<span class="returnvalue">GClosure</span> * <a class="link" href="seed-SeedClosure.html#seed-closure-new" title="seed_closure_new ()">seed_closure_new</a> (<em class="parameter"><code><a class="link" href="seed-Contexts.html#SeedContext" title="SeedContext"><span class="type">SeedContext</span></a> ctx</code></em>,
<em class="parameter"><code><a class="link" href="seed-JS-Objects.html#SeedObject" title="SeedObject"><span class="type">SeedObject</span></a> function</code></em>,
<em class="parameter"><code><a class="link" href="seed-JS-Objects.html#SeedObject" title="SeedObject"><span class="type">SeedObject</span></a> user_data</code></em>,
<em class="parameter"><code>const <span class="type">gchar</span> *description</code></em>);
<a class="link" href="seed-JS-Objects.html#SeedObject" title="SeedObject"><span class="returnvalue">SeedObject</span></a> <a class="link" href="seed-SeedClosure.html#seed-closure-get-callable" title="seed_closure_get_callable ()">seed_closure_get_callable</a> (<em class="parameter"><code><span class="type">GClosure</span> *c</code></em>);
<a class="link" href="seed-Native-Type-Conversion.html#SeedValue" title="SeedValue"><span class="returnvalue">SeedValue</span></a> <a class="link" href="seed-SeedClosure.html#seed-closure-invoke" title="seed_closure_invoke ()">seed_closure_invoke</a> (<em class="parameter"><code><span class="type">GClosure</span> *closure</code></em>,
<em class="parameter"><code><a class="link" href="seed-Native-Type-Conversion.html#SeedValue" title="SeedValue"><span class="type">SeedValue</span></a> *args</code></em>,
<em class="parameter"><code><span class="type">guint</span> argc</code></em>,
<em class="parameter"><code><a class="link" href="seed-Exceptions.html#SeedException" title="SeedException"><span class="type">SeedException</span></a> *exception</code></em>);
<a class="link" href="seed-Native-Type-Conversion.html#SeedValue" title="SeedValue"><span class="returnvalue">SeedValue</span></a> <a class="link" href="seed-SeedClosure.html#seed-closure-invoke-with-context" title="seed_closure_invoke_with_context ()">seed_closure_invoke_with_context</a> (<em class="parameter"><code><a class="link" href="seed-Contexts.html#SeedContext" title="SeedContext"><span class="type">SeedContext</span></a> ctx</code></em>,
<em class="parameter"><code><span class="type">GClosure</span> *closure</code></em>,
<em class="parameter"><code><a class="link" href="seed-Native-Type-Conversion.html#SeedValue" title="SeedValue"><span class="type">SeedValue</span></a> *args</code></em>,
<em class="parameter"><code><span class="type">guint</span> argc</code></em>,
<em class="parameter"><code><a class="link" href="seed-Exceptions.html#SeedException" title="SeedException"><span class="type">SeedException</span></a> *exception</code></em>);
<span class="returnvalue">void</span> <a class="link" href="seed-SeedClosure.html#seed-closure-warn-exception" title="seed_closure_warn_exception ()">seed_closure_warn_exception</a> (<em class="parameter"><code><span class="type">GClosure</span> *c</code></em>,
<em class="parameter"><code><a class="link" href="seed-Contexts.html#SeedContext" title="SeedContext"><span class="type">SeedContext</span></a> ctx</code></em>,
<em class="parameter"><code><a class="link" href="seed-Exceptions.html#SeedException" title="SeedException"><span class="type">SeedException</span></a> exception</code></em>);
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<div class="refsect1">
<a name="seed-SeedClosure.description"></a><h2>Description</h2>
<p>
Long description
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<a name="seed-SeedClosure.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="SeedClosure"></a><h3>struct SeedClosure</h3>
<pre class="programlisting">struct SeedClosure {
GClosure closure;
JSObjectRef function;
JSValueRef user_data;
GType return_type;
gchar *description;
};
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<div class="refsect2">
<a name="seed-closure-new"></a><h3>seed_closure_new ()</h3>
<pre class="programlisting"><span class="returnvalue">GClosure</span> * seed_closure_new (<em class="parameter"><code><a class="link" href="seed-Contexts.html#SeedContext" title="SeedContext"><span class="type">SeedContext</span></a> ctx</code></em>,
<em class="parameter"><code><a class="link" href="seed-JS-Objects.html#SeedObject" title="SeedObject"><span class="type">SeedObject</span></a> function</code></em>,
<em class="parameter"><code><a class="link" href="seed-JS-Objects.html#SeedObject" title="SeedObject"><span class="type">SeedObject</span></a> user_data</code></em>,
<em class="parameter"><code>const <span class="type">gchar</span> *description</code></em>);</pre>
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<div class="refsect2">
<a name="seed-closure-get-callable"></a><h3>seed_closure_get_callable ()</h3>
<pre class="programlisting"><a class="link" href="seed-JS-Objects.html#SeedObject" title="SeedObject"><span class="returnvalue">SeedObject</span></a> seed_closure_get_callable (<em class="parameter"><code><span class="type">GClosure</span> *c</code></em>);</pre>
<p>
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<div class="refsect2">
<a name="seed-closure-invoke"></a><h3>seed_closure_invoke ()</h3>
<pre class="programlisting"><a class="link" href="seed-Native-Type-Conversion.html#SeedValue" title="SeedValue"><span class="returnvalue">SeedValue</span></a> seed_closure_invoke (<em class="parameter"><code><span class="type">GClosure</span> *closure</code></em>,
<em class="parameter"><code><a class="link" href="seed-Native-Type-Conversion.html#SeedValue" title="SeedValue"><span class="type">SeedValue</span></a> *args</code></em>,
<em class="parameter"><code><span class="type">guint</span> argc</code></em>,
<em class="parameter"><code><a class="link" href="seed-Exceptions.html#SeedException" title="SeedException"><span class="type">SeedException</span></a> *exception</code></em>);</pre>
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<div class="refsect2">
<a name="seed-closure-invoke-with-context"></a><h3>seed_closure_invoke_with_context ()</h3>
<pre class="programlisting"><a class="link" href="seed-Native-Type-Conversion.html#SeedValue" title="SeedValue"><span class="returnvalue">SeedValue</span></a> seed_closure_invoke_with_context (<em class="parameter"><code><a class="link" href="seed-Contexts.html#SeedContext" title="SeedContext"><span class="type">SeedContext</span></a> ctx</code></em>,
<em class="parameter"><code><span class="type">GClosure</span> *closure</code></em>,
<em class="parameter"><code><a class="link" href="seed-Native-Type-Conversion.html#SeedValue" title="SeedValue"><span class="type">SeedValue</span></a> *args</code></em>,
<em class="parameter"><code><span class="type">guint</span> argc</code></em>,
<em class="parameter"><code><a class="link" href="seed-Exceptions.html#SeedException" title="SeedException"><span class="type">SeedException</span></a> *exception</code></em>);</pre>
<p>
</p>
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<div class="refsect2">
<a name="seed-closure-warn-exception"></a><h3>seed_closure_warn_exception ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> seed_closure_warn_exception (<em class="parameter"><code><span class="type">GClosure</span> *c</code></em>,
<em class="parameter"><code><a class="link" href="seed-Contexts.html#SeedContext" title="SeedContext"><span class="type">SeedContext</span></a> ctx</code></em>,
<em class="parameter"><code><a class="link" href="seed-Exceptions.html#SeedException" title="SeedException"><span class="type">SeedException</span></a> exception</code></em>);</pre>
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