FirstFloor.ModernUI.Windows.Controls.DpiAwareWindow.DimOwner C# (CSharp) Method

        private void DimOwner() {
            _dimmedOwner = Owner as DpiAwareWindow;
            if (_dimmedOwner?.IsDimmed == false) {
                _dimmedOwner.IsDimmed = true;
            } else {
                _dimmedOwner = null;
            }
        }