properly registered
       in the result.)

</P><PRE
CLASS="SYNOPSIS"
>int PQresultSetInstanceData(PGresult *res, PGEventProc proc, void *data);</PRE
><P>
      </P
></DD
><DT
><A
NAME="LIBPQ-PQRESULTINSTANCEDATA"
></A
><CODE
CLASS="FUNCTION"
>PQresultInstanceData</CODE
>
      </DT
><DD
><P
>       Returns the result's <TT
CLASS="LITERAL"
>instanceData</TT
> associated with <TT
CLASS="PARAMETER"
>proc</TT
>, or <TT
CLASS="SYMBOL"
>NULL</TT
>
       if there is none.

</P><PRE
CLASS="SYNOPSIS"
>void *PQresu