def fileno(self):
        return self._fd
recenters the dialog window to the screen
dataset/ETHPy150Open marineam/nagcat/python/nagcat/nagios_api.py/NagiosWriter.fileno--crossover with--dataset/ETHPy150Open eoyilmaz/anima/anima/ui/progress_dialog.py/ProgressDialogManager.center_window