\membersection{wxStreamBase::OnSysWrite}\label{wxstreambaseonsyswrite}
-\func{size\_t}{OnSysWrite}{\param{void *}{buffer}, \param{size\_t}{ bufsize}}
+\func{size\_t}{OnSysWrite}{\param{const void *}{buffer}, \param{size\_t}{ bufsize}}
See \helpref{OnSysRead}{wxstreambaseonsysread}.