static ColumnManagerCell() { FocusableProperty.OverrideMetadata(typeof(ColumnManagerCell), new FrameworkPropertyMetadata(false)); ReadOnlyProperty.OverrideMetadata(typeof(ColumnManagerCell), new FrameworkPropertyMetadata(true)); ColumnManagerCell.IsPressedProperty = ColumnManagerCell.IsPressedPropertyKey.DependencyProperty; ColumnManagerCell.IsBeingDraggedProperty = ColumnManagerCell.IsBeingDraggedPropertyKey.DependencyProperty; }