X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/cc81d32f2bf8c159f3b1bf6ddaf62e6d77720209..917be7ed065337e8a7a67615969ecaade9eea809:/docs/latex/wx/file.tex?ds=inline diff --git a/docs/latex/wx/file.tex b/docs/latex/wx/file.tex index d8885f878d..0972789d64 100644 --- a/docs/latex/wx/file.tex +++ b/docs/latex/wx/file.tex @@ -6,7 +6,7 @@ %% Created: 14.01.02 (extracted from file.tex) %% RCS-ID: $Id$ %% Copyright: (c) Vadim Zeitlin -%% License: wxWindows license +%% License: wxWidgets license %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \section{\class{wxFile}}\label{wxfile} @@ -19,6 +19,10 @@ its destructor making it unnecessary to worry about forgetting to do it. wxFile is a wrapper around {\tt file descriptor.} - see also \helpref{wxFFile}{wxffile} for a wrapper around {\tt FILE} structure. +{\tt wxFileOffset} is used by the wxFile functions which require offsets as +parameter or return them. If the platform supports it, wxFileOffset if a typedef +for a native 64 bit integer, else a 32 bit integer is used for wxFileOffset. + \wxheading{Derived from} None. @@ -70,7 +74,7 @@ Will fail if the file already exists, else create and open it atomically. Usefu \end{twocollist} Other constants defined elsewhere but used by wxFile functions are wxInvalidOffset which represents an -invalid value of type {\it off\_t} and is returned by functions returning {\it off\_t} on error and the seek +invalid value of type {\it wxFileOffset} and is returned by functions returning {\it wxFileOffset} on error and the seek mode constants used with \helpref{Seek()}{wxfileseek}: \twocolwidtha{7cm} @@ -82,7 +86,7 @@ mode constants used with \helpref{Seek()}{wxfileseek}: \latexignore{\rtfignore{\wxheading{Members}}} -\membersection{wxFile::wxFile}\label{wxfileconstr} +\membersection{wxFile::wxFile}\label{wxfilector} \func{}{wxFile}{\void} @@ -107,7 +111,7 @@ Associates the file with the given file descriptor, which has already been opene \docparam{fd}{An existing file descriptor (see \helpref{Attach()}{wxfileattach} for the list of predefined descriptors)} -\membersection{wxFile::\destruct{wxFile}} +\membersection{wxFile::\destruct{wxFile}}\label{wxfiledtor} \func{}{\destruct{wxFile}}{\void} @@ -204,7 +208,7 @@ Returns true if the file has been opened. \membersection{wxFile::Length}\label{wxfilelength} -\constfunc{off\_t}{Length}{\void} +\constfunc{wxFileOffset}{Length}{\void} Returns the length of the file. @@ -222,7 +226,7 @@ Opens the file, returning true if successful. \membersection{wxFile::Read}\label{wxfileread} -\func{off\_t}{Read}{\param{void*}{ buffer}, \param{off\_t}{ count}} +\func{size\_t}{Read}{\param{void*}{ buffer}, \param{size\_t}{ count}} Reads the specified number of bytes into a buffer, returning the actual number read. @@ -238,7 +242,7 @@ The number of bytes read, or the symbol {\bf wxInvalidOffset} (-1) if there was \membersection{wxFile::Seek}\label{wxfileseek} -\func{off\_t}{Seek}{\param{off\_t }{ofs}, \param{wxSeekMode }{mode = wxFromStart}} +\func{wxFileOffset}{Seek}{\param{wxFileOffset }{ofs}, \param{wxSeekMode }{mode = wxFromStart}} Seeks to the specified position. @@ -254,7 +258,7 @@ The actual offset position achieved, or wxInvalidOffset on failure. \membersection{wxFile::SeekEnd}\label{wxfileseekend} -\func{off\_t}{SeekEnd}{\param{off\_t }{ofs = 0}} +\func{wxFileOffset}{SeekEnd}{\param{wxFileOffset }{ofs = 0}} Moves the file pointer to the specified number of bytes before the end of the file. @@ -268,14 +272,14 @@ The actual offset position achieved, or wxInvalidOffset on failure. \membersection{wxFile::Tell}\label{wxfiletell} -\constfunc{off\_t}{Tell}{\void} +\constfunc{wxFileOffset}{Tell}{\void} Returns the current position or wxInvalidOffset if file is not opened or if another error occurred. \membersection{wxFile::Write}\label{wxfilewrite} -\func{size\_t}{Write}{\param{const void*}{ buffer}, \param{off\_t}{ count}} +\func{size\_t}{Write}{\param{const void*}{ buffer}, \param{wxFileOffset}{ count}} Writes the specified number of bytes from a buffer. @@ -291,10 +295,14 @@ the number of bytes actually written \membersection{wxFile::Write}\label{wxfilewrites} -\func{bool}{Write}{\param{const wxString\& }{s}, \param{wxMBConv\&}{ conv = wxConvLibc}} +\func{bool}{Write}{\param{const wxString\& }{s}, \param{wxMBConv\&}{ conv = wxConvUTF8}} Writes the contents of the string to the file, returns true on success. -The second argument is only meaningful in Unicode build of wxWindows when +The second argument is only meaningful in Unicode build of wxWidgets when {\it conv} is used to convert {\it s} to multibyte representation. +Note that this method only works with {\tt NUL}-terminated strings, if you want +to write data with embedded {\tt NUL}s to the file you should use the other +\helpref{Write() overload}{wxfilewrite}. +