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<TITLE>C API Reference -- Ns_TclEval</TITLE>
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<a name="290233">
</a><h3>Ns_TclEval</h3>
<a name="290234">
</a><h4>Overview</h4>
Execute a Tcl script
<a name="290235">
</a><a name="290236">
</a><h4>Syntax</h4>
<pre> <a name="290237"></a>int Ns_TclEval (
<a name="290238"></a>Ns_DString *pds,
<a name="290239"></a>char *hServer
<a name="290240"></a>char *script
<a name="290241"></a>);
</pre><p><a name="290242">
</a><h4>Description</h4>
<p><a name="290243">
</a>The Ns_TclEval function executes the Tcl function specified by <code>script</code> on the server specified by <code>hServer</code>. It writes the results to the passed-in <code>pds</code> variable.</p>
<p><a name="290244">
</a>Note that the string in <code>script</code> may be temporarily modified by Tcl, so it must be writable. For example, use:</p>
<pre> <a name="290245"></a>char script[*]="sometcl";
</pre><p><p><a name="290246">
</a>instead of:</p>
<pre> <a name="290247"></a>char *script="sometcl";
</pre><p><a name="290249">
</a><h4>Examples</h4>
<p><a name="290250">
</a>Use this code to call <b>ns_sendmail</b> from C:</p>
<pre> <a name="290251"></a>NS_DStringVarAppend(&dsScript, "ns_sendmail", to, " ",
<a name="290252"></a>  from, " ", subject, " ", body);
<a name="290253"></a>status=Ns_TclEval(&dsResult, Ns_ConnServer(conn),
<a name="290254"></a>  dsScript.string)
</pre><p>
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