X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/954b8ae60391d18b87a604e7919c87c0c6ae208b..dbddf573912254bb14b4ca70c5c5db6248051294:/docs/latex/wx/outptstr.tex?ds=sidebyside diff --git a/docs/latex/wx/outptstr.tex b/docs/latex/wx/outptstr.tex index eae660ae42..90873de8f9 100644 --- a/docs/latex/wx/outptstr.tex +++ b/docs/latex/wx/outptstr.tex @@ -3,6 +3,8 @@ % ----------------------------------------------------------------------------- \section{\class{wxOutputStream}}\label{wxoutputstream} +wxOutputStream is an abstract base class which may not be used directly. + \wxheading{Derived from} \helpref{wxStreamBase}{wxstreambase} @@ -11,10 +13,6 @@ -\wxheading{See also} - -\helpref{wxStreamBuffer}{wxstreambuffer} - % ----------- % ctor & dtor % ----------- @@ -24,20 +22,18 @@ Creates a dummy wxOutputStream object. -\func{}{wxOutputStream}{\param{wxStreamBuffer*}{ sbuf}} - -Creates an input stream using the specified stream buffer \it{sbuf}. This -stream buffer can point to another stream. - \membersection{wxOutputStream::\destruct{wxOutputStream}} \func{}{\destruct{wxOutputStream}}{\void} Destructor. -% ----------- -% IO function -% ----------- +\membersection{wxOutputStream::LastWrite} + +\constfunc{size\_t}{LastWrite}{\void} + +Returns the number of bytes written during the last Write(). + \membersection{wxOutputStream::PutC} \func{void}{PutC}{\param{char}{ c}} @@ -45,47 +41,75 @@ Destructor. Puts the specified character in the output queue and increments the stream position. +\membersection{wxOutputStream::SeekO} + +\func{off\_t}{SeekO}{\param{off\_t}{ pos}, \param{wxSeekMode}{ mode}} + +Changes the stream current position. + +\membersection{wxOutputStream::TellO} + +\constfunc{off\_t}{TellO}{\void} + +Returns the current stream position. + \membersection{wxOutputStream::Write} -\func{wxOutputStream\&}{Write}{\param{const void *}{buffer}, \param{size_t}{ size}} +\func{wxOutputStream\&}{Write}{\param{const void *}{buffer}, \param{size\_t}{ size}} -Writes the specified amount of bytes using the data of \it{buffer}. -\it{WARNING!} The buffer absolutely needs to have at least the specified size. +Writes the specified amount of bytes using the data of {\it buffer}. +{\it WARNING!} The buffer absolutely needs to have at least the specified size. This function returns a reference on the current object, so the user can test any states of the stream right away. -\func{wxOutputStream\&}{Write}{\param{wxInputStream\&}{ stream_in}} +\func{wxOutputStream\&}{Write}{\param{wxInputStream\&}{ stream\_in}} Reads data from the specified input stream and stores them in the current stream. The data is read until an error is raised by one of the two streams. -% ------------------ -% Position functions -% ------------------ -\membersection{wxOutputStream::SeekO} +% ----------------------------------------------------------------------------- +% wxCountingOutputStream +% ----------------------------------------------------------------------------- +\section{\class{wxCountingOutputStream}}\label{wxcountingoutputstream} -\func{off_t}{SeekO}{\param{off_t}{ pos}, \param{wxSeekMode}{ mode}} +wxCountingOutputStream is specialized output stream which does not write any data anyway, +instead it counts how many bytes would get written if this were a normal stream. This +can sometimes be useful or required if some data gets serialized to a stream or compressed +by using stream compression and thus the final size of the stream cannot be known other +than pretending to write the stream. One case where the resulting size would have to be +known is if the data has to be written to a piece of memory and the memory has to be +allocated before writing to it (which is probably always the case when writing to a +memory stream). -Changes the stream current position. +\wxheading{Derived from} -\membersection{wxOutputStream::TellO} +\helpref{wxOutputStream}{wxoutputstream} +\helpref{wxStreamBase}{wxstreambase} -\constfunc{off_t}{TellO}{\void} +\wxheading{Include files} -Returns the current stream position. + -% --------------- -% State functions -% --------------- -\membersection{wxOutputStream::OutputStreamBuffer} +% ----------- +% ctor & dtor +% ----------- +\membersection{wxCountingOutputStream::wxCountingOutputStream} -\func{wxStreamBuffer *}{OutputStreamBuffer}{\void} +\func{}{wxCountingOutputStream}{\void} -Returns the stream buffer associated with the output stream. +Creates a wxCountingOutputStream object. -\membersection{wxOutputStream::LastWrite} +\membersection{wxCountingOutputStream::\destruct{wxCountingOutputStream}} + +\func{}{\destruct{wxCountingOutputStream}}{\void} + +Destructor. + +\membersection{wxCountingOutputStream::GetSize} + +\constfunc{size\_t}{GetSize}{\void} -\constfunc{size_t}{LastWrite}{\void} +Returns the current size of the stream.