Function

GLiblog_set_writer_func

Declaration

void
g_log_set_writer_func (
  GLogWriterFunc func,
  gpointer user_data,
  GDestroyNotify user_data_free
)

Description

Set a writer function which will be called to format and write out each log message. Each program should set a writer function, or the default writer (g_log_writer_default()) will be used.

Libraries must not call this function — only programs are allowed to install a writer function, as there must be a single, central point where log messages are formatted and outputted.

There can only be one writer function. It is an error to set more than one.

Available since:

2.50

Parameters

`func`	`GLogWriterFunc`
	Log writer function, which must not be `NULL`.
	The argument can be `NULL`.
`user_data`	`gpointer`
	User data to pass to `func`.
	The argument can be `NULL`.
	The data is owned by the caller of the function.
`user_data_free`	`GDestroyNotify`
	Function to free `user_data` once it’s finished with, if non-`NULL`.