pub unsafe extern "C" fn g_log_set_handler_full(
log_domain: *const i8,
log_levels: u32,
log_func: Option<unsafe extern "C" fn(_: *const i8, _: u32, _: *const i8, _: *mut c_void)>,
user_data: *mut c_void,
destroy: Option<unsafe extern "C" fn(_: *mut c_void)>
) -> u32