C# Definition:

    [Serializable, Flags]
    public enum UI_Invalidations
    {
    State = 0X00000001,         // UI_PKEY_Enabled
    Value = 0X00000002,         // Value property
    Property = 0X00000004,      // Any property
    AllProperties = 0X00000008,     // All properties
    }

Notes:

None.