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\alias{gFileOpenReadwrite}
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\name{gFileOpenReadwrite}
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\title{gFileOpenReadwrite}
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\description{Opens an existing file for reading and writing. The result is
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a \code{\link{GFileIOStream}} that can be used to read and write the contents of the file.}
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\usage{gFileOpenReadwrite(object, cancellable = NULL, .errwarn = TRUE)}
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\item{\verb{object}}{\code{\link{GFile}} to open}
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\item{\verb{cancellable}}{a \code{\link{GCancellable}}}
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\item{.errwarn}{Whether to issue a warning on error or fail silently}
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\details{If \code{cancellable} is not \code{NULL}, then the operation can be cancelled by
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triggering the cancellable object from another thread. If the operation
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was cancelled, the error \code{G_IO_ERROR_CANCELLED} will be returned.
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If the file does not exist, the G_IO_ERROR_NOT_FOUND error will be returned.
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If the file is a directory, the G_IO_ERROR_IS_DIRECTORY error will be returned.
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Other errors are possible too, and depend on what kind of filesystem the file is on.
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Note that in many non-local file cases read and write streams are not supported,
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so make sure you really need to do read and write streaming, rather than
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just opening for reading or writing.
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A list containing the following elements:
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\item{retval}{[\code{\link{GFileIOStream}}] \code{\link{GFileIOStream}} or \code{NULL} on error.}
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\item{\verb{error}}{a \code{\link{GError}}, or \code{NULL}}
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\author{Derived by RGtkGen from GTK+ documentation}
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man/gFileOpenReadwrite.Rd
