location to store the number of bytes that was written to the stream
optional #GCancellable object, %NULL to ignore.
location to store the error occurring, or %NULL to ignore
the format string. See the printf() documentation
the parameters to insert into the format string
%TRUE on success, %FALSE if there was an error
2.40
This is a utility function around g_output_stream_write_all(). It uses g_strdup_vprintf() to turn @format and @args into a string that is then written to @stream.
See the documentation of g_output_stream_write_all() about the behavior of the actual write operation.
Note that partial writes cannot be properly checked with this function due to the variable length of the written string, if you need precise control over partial write failures, you need to create you own printf()-like wrapper around g_output_stream_write() or g_output_stream_write_all().