[Closed] [C#] AddBezierKey

I just created this function to add new bezierkeys on bezier_float controller:

public static class TestClass
{
    static IGlobal globalInterface = GlobalInterface.Instance;
    static IInterface coreInterface = globalInterface.COREInterface;

    public static class TangentType
    {
        public static uint Smooth = 0, Linear = 1, Step = 2, Fast = 3, Slow = 4, User = 5, Flat = 6;
    }

    const uint NUM_TANGENTTYPES = 7;
    const uint BEZKEY_NUMTYPEBITS = 3;
    const int BEZKEY_INTYPESHIFT = 7;
    const int BEZKEY_OUTTYPESHIFT = (int)(BEZKEY_INTYPESHIFT + BEZKEY_NUMTYPEBITS);
    const uint BEZKEY_TYPEMASK = 7;

    public static void SetInTanType(ref IIBezFloatKey key, uint t)
    {
        key.Flags = (key.Flags & (~(BEZKEY_TYPEMASK << BEZKEY_INTYPESHIFT))) | (t << BEZKEY_INTYPESHIFT);
    }

    public static void SetOutTanType(ref IIBezFloatKey key, uint t)
    {
        key.Flags = (key.Flags & (~(BEZKEY_TYPEMASK << BEZKEY_OUTTYPESHIFT))) | (t << BEZKEY_OUTTYPESHIFT);
    }

    public static uint GetTangentType(string type)
    {
        switch (type)
        {
            case "Smooth":
                return 0;
            case "Linear":
                return 1;
            case "Step":
                return 2;
            case "Fast":
                return 3;
            case "Slow":
                return 4;
            case "User":
                return 5;
            case "Flat":
                return 6;
            default:
                return 0;
        }
    }

    public static void AddBezierKeys(UIntPtr controllerHandle,int[] time,float[] value,float[] inTangent,float[] outTangent, float[] inTangentLength,float[] outTangentLength, string[] inTangentType,string[] outTangentType)
    {
        globalInterface.SuspendAnimate();
        IControl control = (IControl)globalInterface.Animatable.GetAnimByHandle(controllerHandle);
        IIKeyControl keyControl = (IIKeyControl)(control.GetInterface(InterfaceID.Keycontrol));
        if (keyControl == null) return;
        IIBezFloatKey key = globalInterface.IBezFloatKey.Create();
        for (var i = 0; i < time.Length; i++)
        {
            control.AddNewKey(time[i]*globalInterface.TicksPerFrame, 1);
            keyControl.GetKey(i, key);
            key.Val = value[i];
            key.Intan = inTangent[i];
            key.Outtan = outTangent[i];
            key.InLength = inTangentLength[i];
            key.OutLength = outTangentLength[i];
            SetInTanType(ref key, GetTangentType(inTangentType[i]));
            SetOutTanType(ref key, GetTangentType(outTangentType[i]));
            keyControl.SetKey(i, key);
        }
        keyControl.SortKeys();
        control.Dispose();
        keyControl.Dispose();
        key.Dispose();
        globalInterface.ResumeAnimate();
    }
}

Everything works find but there is slightly difference between saved and loaded animation.I know I missed 4 key properties x_locked, y_locked, z_locked, constantVelocity, freeHandle. But I couldn’t find them in the IIBezFloatKey.