d or 0 if validating the element requires a full node, and -1 in case of error.</td></tr></tbody></table></div><h3><a name="xmlRelaxNGValidityErrorFunc" id="xmlRelaxNGValidityErrorFunc"></a>Function type: xmlRelaxNGValidityErrorFunc</h3><pre class="programlisting">Function type: xmlRelaxNGValidityErrorFunc
void	xmlRelaxNGValidityErrorFunc	(void * ctx, <br />					 const char * msg, <br />					 ... ...)
</pre><p>Signature of an error callback from a Relax-NG validation</p><div class="variablelist"><table bord