The offset in bytes from the position specified by @type
a #GSeekType. The type %G_SEEK_CUR is only allowed in those cases where a call to g_io_channel_set_encoding () is allowed. See the documentation for g_io_channel_set_encoding () for details.
Return: the status of the operation.
GException on failure.
Replacement for g_io_channel_seek() with the new API.