private void invokeCalibrationChanged()
 {
     currentSettings.DpiScalingMode     = DpiScalingMode;
     currentSettings.MonitorDpi         = MonitorDpi;
     currentSettings.VerticalMonitorDpi = VerticalMonitorDpi;
     currentSettings.InvokeChanged();
     CalibrationChanged?.Invoke(this, EventArgs.Empty);
 }
 private void OnCalibrationChanged()
 {
     CalibrationChanged?.Invoke(this, EventArgs.Empty);
 }