X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f2fc7f71ce3878b0f51c4cfa2f9177175788f8e4..d9ff0f91fbddae88286567cab74dcfb59c91fc0f:/docs/latex/wx/strmbase.tex diff --git a/docs/latex/wx/strmbase.tex b/docs/latex/wx/strmbase.tex index cfd0d3bfdd..243e5a48ef 100644 --- a/docs/latex/wx/strmbase.tex +++ b/docs/latex/wx/strmbase.tex @@ -3,10 +3,17 @@ % ----------------------------------------------------------------------------- \section{\class{wxStreamBase}}\label{wxstreambase} +This class is the base class of most stream related classes in wxWindows. It must +not be used directly. + \wxheading{Derived from} None +\wxheading{Include files} + + + \wxheading{See also} \helpref{wxStreamBuffer}{wxstreambuffer} @@ -24,7 +31,7 @@ None \func{}{wxStreamBase}{\void} -Creates a dummy stream object. +Creates a dummy stream object. It doesn't do anything. \membersection{wxStreamBase::\destruct{wxStreamBase}} @@ -32,114 +39,70 @@ Creates a dummy stream object. Destructor. +\membersection{wxStreamBase::IsOk}\label{wxstreambaseisok} + +\constfunc{wxStreamError}{IsOk}{\void} + +Returns TRUE if no error occurred on the stream. + +\wxheading{See also} + +\helpref{LastError}{wxstreambaselasterror} + \membersection{wxStreamBase::LastError}\label{wxstreambaselasterror} \constfunc{wxStreamError}{LastError}{\void} This function returns the last error. -It is of the form: -\twocolwidtha{7cm}% -\begin{twocollist}\itemsep=0pt -\twocolitem{{\bf wxStream_NOERROR}}{No error occured.} -\twocolitem{{\bf wxStream_EOF}}{An End Of File exception occured.} -\twocolitem{{\bf wxStream_WRITE_ERR}{Error during the last write call.} -\twocolitem{{\bf wxStream_READ_ERR}{Error during the last read call.} -\end{twocollist}% - -\membersection{wxStreamBase::StreamSize} -\constfunc{size_t}{StreamSize}{\void} -This function returns the size of the stream. For example, for a file it is the size of -the file). Warning! There are streams which do not have size by definition, such as a socket. +\twocolwidtha{5cm} +\begin{twocollist}\itemsep=0pt +\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::OnSysRead}\label{wxstreambaseonsysread} -\func{size_t}{OnSysRead}{\param{void*}{ buffer}, \param{size_t}{ bufsize}} +\func{size\_t}{OnSysRead}{\param{void*}{ buffer}, \param{size\_t}{ bufsize}} -Internal function. It is called when the stream buffer needs a buffer of the +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::OnSysWrite} - -\func{size_t}{OnSysWrite}{\param{void *}{buffer}, \param{size_t}{ bufsize}} - -See \helpref{OnSysRead}{wxstreambaseonsysread}. - \membersection{wxStreamBase::OnSysSeek} -\func{off_t}{OnSysSeek}{\param{off_t}{ pos}, \param{wxSeekMode}{ mode}} +\func{off\_t}{OnSysSeek}{\param{off\_t}{ pos}, \param{wxSeekMode}{ mode}} -Internal function. It is called when the stream buffer needs to change the -current position in the stream. See \helpref{wxStreamBuffer::Seek}{wxstreambufferseek} +Internal function. It is called when the stream needs to change the +current position. \membersection{wxStreamBase::OnSysTell} -\constfunc{off_t}{OnSysTell}{\void} +\constfunc{off\_t}{OnSysTell}{\void} -Internal function. Is is called when the stream buffer needs to know the -current position in the stream. - -% ----------------------------------------------------------------------------- -% wxInputStream -% ----------------------------------------------------------------------------- -\section{\class{wxInputStream}}\label{wxinputstream} - -\wxheading{Derived from} +Internal function. Is is called when the stream needs to know the +real position. -\helpref{wxStreamBase}{wxstreambase} - -\wxheading{See also} - -\helpref{wxStreamBuffer}{wxstreambuffer} - -% ----------------------------------------------------------------------------- -% Members -% ----------------------------------------------------------------------------- -\latexignore{\rtfignore{\wxheading{Members}}} - -% ----------- -% ctor & dtor -% ----------- - -\membersection{wxInputStream::wxInputStream} -\func{}{wxInputStream}{\void} - -Initializes a dummy input stream. - -\func{}{wxInputStream}{\param{wxStreamBuffer *}{sbuf}} - -Initializes an input stream linked to the specified stream buffer. - -\membersection{wxInputStream::\destruct{wxInputStream}} -\func{}{\destruct{wxInputStream}{\void} +\membersection{wxStreamBase::OnSysWrite} -Destructor. +\func{size\_t}{OnSysWrite}{\param{void *}{buffer}, \param{size\_t}{ bufsize}} -% ------- -% IO call -% ------- +See \helpref{OnSysRead}{wxstreambaseonsysread}. -\membersection{wxInputStream::Peek} -\func{char}{Peek}{\void} +\membersection{wxStreamBase::GetSize}\label{wxstreambasegetsize} -\membersection{wxInputStream::GetC} -\func{char}{GetC}{\void} +\constfunc{size\_t}{GetSize}{\void} -\membersection{wxInputStream::Read} -\func{wxInputStream&}{Read}{\param{void *}{buffer}, \param{size_t}{ size}} -\func{wxInputStream&}{Read}{\param{wxOutputStream&}{ stream_out}} +This function returns the size of the stream. For example, for a file it is the size of +the file. -\membersection{wxInputStream::SeekI} -\func{off_t}{SeekI}{\param{off_t}{ pos}, \param{wxSeekMode}{ mode = wxFromStart}} +\wxheading{Warning} -\membersection{wxInputStream::TellI} -\constfunc{off_t}{TellI}{\void} +There are streams which do not have size by definition, such as socket streams. +In that cases, GetSize returns an invalid size represented by -% ----- -% State -% ----- -\membersection{wxInputStream::InputStreamBuffer} -\func{wxStreamBuffer *}{InputStreamBuffer}{\void} +\begin{verbatim} +~(size_t)0 +\end{verbatim} -\membersection{wxInputStream::LastRead} -\func{size_t}{LastRead}{\void}