l'><CODE>seek</CODE></A> on the first filter or device in this chain, which must be non-empty.
</P>

<A NAME="component_type"></A>
<H4><CODE>chain::component_type</CODE></H4>

<PRE CLASS="broken_ie">    <SPAN CLASS='keyword'>const</SPAN> std::type_info& component_type(<SPAN CLASS="keyword">int</SPAN> n) <SPAN CLASS='keyword'>const</SPAN>;
</PRE>

<P>
      Returns a reference to an instance <CODE>std::type_info</CODE> corresponding to the type of the <CODE>n</CODE><I>th</I> Filter or Device in this chain, w