457e6c54a2
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5875 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
116 lines
3.3 KiB
TeX
116 lines
3.3 KiB
TeX
% -----------------------------------------------------------------------------
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% wxOutputStream
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% -----------------------------------------------------------------------------
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\section{\class{wxOutputStream}}\label{wxoutputstream}
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wxOutputStream is an abstract base class which may not be used directly.
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\wxheading{Derived from}
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\helpref{wxStreamBase}{wxstreambase}
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\wxheading{Include files}
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<wx/stream.h>
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% -----------
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% ctor & dtor
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% -----------
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\membersection{wxOutputStream::wxOutputStream}
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\func{}{wxOutputStream}{\void}
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Creates a dummy wxOutputStream object.
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\membersection{wxOutputStream::\destruct{wxOutputStream}}
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\func{}{\destruct{wxOutputStream}}{\void}
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Destructor.
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\membersection{wxOutputStream::LastWrite}
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\constfunc{size\_t}{LastWrite}{\void}
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Returns the number of bytes written during the last Write().
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\membersection{wxOutputStream::PutC}
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\func{void}{PutC}{\param{char}{ c}}
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Puts the specified character in the output queue and increments the
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stream position.
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\membersection{wxOutputStream::SeekO}
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\func{off\_t}{SeekO}{\param{off\_t}{ pos}, \param{wxSeekMode}{ mode}}
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Changes the stream current position.
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\membersection{wxOutputStream::TellO}
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\constfunc{off\_t}{TellO}{\void}
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Returns the current stream position.
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\membersection{wxOutputStream::Write}
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\func{wxOutputStream\&}{Write}{\param{const void *}{buffer}, \param{size\_t}{ size}}
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Writes the specified amount of bytes using the data of {\it buffer}.
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{\it WARNING!} The buffer absolutely needs to have at least the specified size.
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This function returns a reference on the current object, so the user can test
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any states of the stream right away.
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\func{wxOutputStream\&}{Write}{\param{wxInputStream\&}{ stream\_in}}
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Reads data from the specified input stream and stores them
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in the current stream. The data is read until an error is raised
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by one of the two streams.
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% -----------------------------------------------------------------------------
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% wxCountingOutputStream
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% -----------------------------------------------------------------------------
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\section{\class{wxCountingOutputStream}}\label{wxcountingoutputstream}
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wxCountingOutputStream is specialized output stream which does not write any data anyway,
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instead it counts how many bytes would get written if this were a normal stream. This
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can sometimes be useful or required if some data gets serialized to a stream or compressed
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by using stream compression and thus the final size of the stream cannot be known other
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than pretending to write the stream. One case where the resulting size would have to be
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known is if the data has to be written to a piece of memory and the memory has to be
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allocated before writing to it (which is probably always the case when writing to a
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memory stream).
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\wxheading{Derived from}
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\helpref{wxOutputStream}{wxoutputstream}
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\helpref{wxStreamBase}{wxstreambase}
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\wxheading{Include files}
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<wx/stream.h>
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% -----------
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% ctor & dtor
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% -----------
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\membersection{wxCountingOutputStream::wxCountingOutputStream}
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\func{}{wxCountingOutputStream}{\void}
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Creates a wxCountingOutputStream object.
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\membersection{wxCountingOutputStream::\destruct{wxCountingOutputStream}}
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\func{}{\destruct{wxCountingOutputStream}}{\void}
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Destructor.
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\membersection{wxCountingOutputStream::GetSize}
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\constfunc{size\_t}{GetSize}{\void}
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Returns the current size of the stream.
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