public void CombineWithGeometry(D2D1Geometry inputGeometry, D2D1CombineMode combineMode, D2D1Matrix3X2F inputGeometryTransform, D2D1SimplifiedGeometrySink geometrySink)
        {
            if (inputGeometry == null)
            {
                throw new ArgumentNullException("inputGeometry");
            }

            if (geometrySink == null)
            {
                throw new ArgumentNullException("geometrySink");
            }

            GCHandle inputGeometryTransformHandle = GCHandle.Alloc(inputGeometryTransform, GCHandleType.Pinned);

            try
            {
                this.GetHandle<ID2D1Geometry>().CombineWithGeometry(inputGeometry.GetHandle<ID2D1Geometry>(), combineMode, inputGeometryTransformHandle.AddrOfPinnedObject(), D2D1Constants.DefaultFlatteningTolerance, geometrySink.GetHandle<ID2D1SimplifiedGeometrySink>());
            }
            finally
            {
                inputGeometryTransformHandle.Free();
            }
        }
        public void CombineWithGeometry(D2D1Geometry inputGeometry, D2D1CombineMode combineMode, D2D1SimplifiedGeometrySink geometrySink)
        {
            if (inputGeometry == null)
            {
                throw new ArgumentNullException("inputGeometry");
            }

            if (geometrySink == null)
            {
                throw new ArgumentNullException("geometrySink");
            }

            this.GetHandle<ID2D1Geometry>().CombineWithGeometry(inputGeometry.GetHandle<ID2D1Geometry>(), combineMode, IntPtr.Zero, D2D1Constants.DefaultFlatteningTolerance, geometrySink.GetHandle<ID2D1SimplifiedGeometrySink>());
        }