\membersection{wxStreamBase::IsOk}\label{wxstreambaseisok}
-\constfunc{bool}{IsOk}{\void}
+\constfunc{virtual bool}{IsOk}{\void}
Returns true if no error occurred on the stream.
\helpref{GetLastError}{wxstreambasegetlasterror}
-\membersection{wxStreamBase::IsSeekable}\label{wxstreambaseisok}
+\membersection{wxStreamBase::IsSeekable}\label{wxstreambaseisseekable}
\constfunc{bool}{IsSeekable}{\void}
\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}.