define _HPUX_SOURCE under HP-UX, otherwise many things are not defined in standard...

[wxWidgets.git] / docs / latex / wx / strmbase.tex

diff --git a/docs/latex/wx/strmbase.tex b/docs/latex/wx/strmbase.tex
index 0a6a5a38efb94c49296bb0c4506ae29bf5ad5405..8c495730c309376c74b6282da247072d8f6e68c8 100644 (file)
--- a/docs/latex/wx/strmbase.tex
+++ b/docs/latex/wx/strmbase.tex
@@ -3,7 +3,7 @@
 % -----------------------------------------------------------------------------
 \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}
@@ -27,42 +27,80 @@ None
 % 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 occured 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{LastError}{wxstreambaselasterror}
 
-\membersection{wxStreamBase::LastError}\label{wxstreambaselasterror}
+\membersection{wxStreamBase::GetLastError}\label{wxstreambasegetlasterror}
 
-\constfunc{wxStreamError}{LastError}{\void}
+\constfunc{wxStreamError}{GetLastError}{\void}
 
 This function returns the last error.
 
 \twocolwidtha{5cm}
 \begin{twocollist}\itemsep=0pt
-\twocolitem{{\bf wxSTREAM\_NO\_ERROR}}{No error occured.}
-\twocolitem{{\bf wxSTREAM\_EOF}}{An End-Of-File occured.}
-\twocolitem{{\bf wxSTREAM\_WRITE\_ERROR}}{A generic error occured on the last write call.}
-\twocolitem{{\bf wxSTREAM\_READ\_ERROR}}{A generic error occured on the last read call.}
+\twocolitem{{\bf wxSTREAM\_NO\_ERROR}}{No error occurred.}
+\twocolitem{{\bf wxSTREAM\_EOF}}{An End-Of-File occurred.}
+\twocolitem{{\bf wxSTREAM\_WRITE\_ERROR}}{A generic error occurred on the last write call.}
+\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}}
@@ -70,39 +108,26 @@ This function returns the last error.
 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}
+
+\membersection{wxStreamBase::OnSysWrite}\label{wxstreambaseonsyswrite}
 
 \func{size\_t}{OnSysWrite}{\param{void *}{buffer}, \param{size\_t}{ bufsize}}
 
 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.
-
-\wxheading{Warning}
-
-There are streams which do not have size by definition, such as socket streams.
-In that cases, GetSize returns an invalid size represented by
-
-\begin{verbatim}
-~(size_t)0
-\end{verbatim}
-