static void psppire_data_window_base_init (PsppireDataWindowClass *class);
static void psppire_data_window_class_init (PsppireDataWindowClass *class);
static void psppire_data_window_init (PsppireDataWindow *data_editor);
static void psppire_data_window_base_init (PsppireDataWindowClass *class);
static void psppire_data_window_class_init (PsppireDataWindowClass *class);
static void psppire_data_window_init (PsppireDataWindow *data_editor);