+Returns the last occurred error.
+
+\twocolwidtha{7cm}
+\begin{twocollist}\itemsep=0pt
+\twocolitem{{\bf wxPROTO\_NOERR}}{No error.}
+\twocolitem{{\bf wxPROTO\_NETERR}}{A generic network error occurred.}
+\twocolitem{{\bf wxPROTO\_PROTERR}}{An error occurred during negotiation.}
+\twocolitem{{\bf wxPROTO\_CONNERR}}{The client failed to connect the server.}
+\twocolitem{{\bf wxPROTO\_INVVAL}}{Invalid value.}
+\twocolitem{{\bf wxPROTO\_NOHNDLR}}{.}
+\twocolitem{{\bf wxPROTO\_NOFILE}}{The remote file doesn't exist.}
+\twocolitem{{\bf wxPROTO\_ABRT}}{Last action aborted.}
+\twocolitem{{\bf wxPROTO\_RCNCT}}{An error occurred during reconnection.}
+\twocolitem{{\bf wxPROTO\_STREAM}}{Someone tried to send a command during a transfer.}
+\end{twocollist}