Installs a default log handler which is used if no
log handler has been set for the particular log domain
and log level combination. By default, GLib uses
g_log_default_handler() as default log handler.
This has no effect if structured logging is enabled; see [Using Structured Logging][using-structured-logging].
Available since: 2.6
This function is not directly available to language bindings.
The log handler function.
Data passed to the log handler.
The argument can be
The data is owned by the caller of the function.