GFileIOStream* g_file_open_readwrite ( GFile* file, GCancellable* cancellable, GError** error )
Opens an existing file for reading and writing. The result is
GFileIOStream that can be used to read and write the contents
of the file.
cancellable is not
NULL, then the operation can be cancelled
by triggering the cancellable object from another thread. If the
operation was cancelled, the error
G_IO_ERROR_CANCELLED will be returned.
If the file does not exist, the
G_IO_ERROR_NOT_FOUND error will
be returned. If the file is a directory, the
error will be returned. Other errors are possible too, and depend on
what kind of filesystem the file is on. Note that in many non-local
file cases read and write streams are not supported, so make sure you
really need to do read and write streaming, rather than just opening
for reading or writing.
|The argument can be |
|The data is owned by the caller of the function.|
|The return location for a
|The caller of the method takes ownership of the data, and is responsible for freeing it.|