% -----------------------------------------------------------------------------
\section{\class{wxStreamBase}}\label{wxstreambase}
-This class is the base class of most stream related classes in wxWindows. It must
+This class is the base class of most stream related classes in wxWidgets. It must
not be used directly.
\wxheading{Derived from}
% ctor & dtor
% -----------
-\membersection{wxStreamBase::wxStreamBase}
+
+\membersection{wxStreamBase::wxStreamBase}\label{wxstreambasector}
\func{}{wxStreamBase}{\void}
Creates a dummy stream object. It doesn't do anything.
-\membersection{wxStreamBase::\destruct{wxStreamBase}}
+
+\membersection{wxStreamBase::\destruct{wxStreamBase}}\label{wxstreambasedtor}
\func{}{\destruct{wxStreamBase}}{\void}
Destructor.
-\membersection{wxStreamBase::IsOk}\label{wxstreambaseisok}
-\constfunc{wxStreamError}{IsOk}{\void}
+\membersection{wxStreamBase::GetLength}\label{wxstreambasegetlength}
-Returns true if no error occurred on the stream.
+\constfunc{wxFileOffset}{GetLength}{\void}
-\wxheading{See also}
+Returns the length of the stream in bytes. If the length cannot be determined
+(this is always the case for socket streams for example), returns
+\texttt{wxInvalidOffset}.
+
+\newsince{2.5.4}
-\helpref{GetLastError}{wxstreambasegetlasterror}
\membersection{wxStreamBase::GetLastError}\label{wxstreambasegetlasterror}
\twocolitem{{\bf wxSTREAM\_READ\_ERROR}}{A generic error occurred on the last read call.}
\end{twocollist}
+
+\membersection{wxStreamBase::GetSize}\label{wxstreambasegetsize}
+
+\constfunc{size\_t}{GetSize}{\void}
+
+\helpref{GetLength}{wxstreambasegetlength}
+
+This function returns the size of the stream. For example, for a file it is the
+size of the file.
+
+\wxheading{Warning}
+
+There are streams which do not have size by definition, such as socket streams.
+In that cases, GetSize returns $0$ so you should always test its return value.
+
+
+\membersection{wxStreamBase::IsOk}\label{wxstreambaseisok}
+
+\constfunc{bool}{IsOk}{\void}
+
+Returns true if no error occurred on the stream.
+
+\wxheading{See also}
+
+\helpref{GetLastError}{wxstreambasegetlasterror}
+
+
+\membersection{wxStreamBase::IsSeekable}\label{wxstreambaseisseekable}
+
+\constfunc{bool}{IsSeekable}{\void}
+
+Returns true if the streams supports seeking to arbitrary offsets.
+
+
\membersection{wxStreamBase::OnSysRead}\label{wxstreambaseonsysread}
\func{size\_t}{OnSysRead}{\param{void*}{ buffer}, \param{size\_t}{ bufsize}}
Internal function. It is called when the stream wants to read data of the
specified size. It should return the size that was actually read.
-\membersection{wxStreamBase::OnSysSeek}
+
+\membersection{wxStreamBase::OnSysSeek}\label{wxstreambaseonsysseek}
\func{off\_t}{OnSysSeek}{\param{off\_t}{ pos}, \param{wxSeekMode}{ mode}}
Internal function. It is called when the stream needs to change the
current position.
-\membersection{wxStreamBase::OnSysTell}
+
+\membersection{wxStreamBase::OnSysTell}\label{wxstreambaseonsystell}
\constfunc{off\_t}{OnSysTell}{\void}
Internal function. Is is called when the stream needs to know the
real position.
-\membersection{wxStreamBase::OnSysWrite}
-\func{size\_t}{OnSysWrite}{\param{void *}{buffer}, \param{size\_t}{ bufsize}}
+\membersection{wxStreamBase::OnSysWrite}\label{wxstreambaseonsyswrite}
-See \helpref{OnSysRead}{wxstreambaseonsysread}.
-
-\membersection{wxStreamBase::GetSize}\label{wxstreambasegetsize}
-
-\constfunc{size\_t}{GetSize}{\void}
-
-This function returns the size of the stream. For example, for a file it is the size of
-the file.
+\func{size\_t}{OnSysWrite}{\param{const void *}{buffer}, \param{size\_t}{ bufsize}}
-\wxheading{Warning}
-
-There are streams which do not have size by definition, such as socket streams.
-In that cases, GetSize returns $0$ so you should always test its return value.
+See \helpref{OnSysRead}{wxstreambaseonsysread}.