g_log_set_writer_func (
  GLogWriterFunc func,
  gpointer user_data,
  GDestroyNotify user_data_free


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


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.