AntTweakBar.DoubleVariable.SetCallback C# (CSharp) Метод

        private void SetCallback(IntPtr pointer, IntPtr clientData)
        {
            double[] data = new double[1]; /* Value */
            Marshal.Copy(pointer, data, 0, data.Length);

            if (IsValid(data[0]))
            {
                bool changed = (data[0] != value);
                value = data[0];

                if (changed) {
                    OnChanged(EventArgs.Empty);
                }
            }
        }