Method
GioFileopen_readwrite
Declaration
GFileIOStream*
g_file_open_readwrite (
GFile* file,
GCancellable* cancellable,
GError** error
)
Description
Opens an existing file for reading and writing. The result is
a GFileIOStream
that can be used to read and write the contents
of the file.
If 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 G_IO_ERROR_IS_DIRECTORY
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.
Available since: | 2.22 |
Parameters
cancellable |
GCancellable |
A |
|
The argument can be NULL . | |
The data is owned by the caller of the function. | |
error |
GError ** |
The return location for a GError* , or NULL . |
Return value
Returns: | GFileIOStream |
|
|
The caller of the method takes ownership of the data, and is responsible for freeing it. |