Microsoft.VisualStudio.R.Package.Interop.CommandTargetToOleShim.GetShortPositionFromInputArg C# (CSharp) Method

        POINTS[] GetShortPositionFromInputArg(IntPtr location) {
            POINTS[] position = null;

            //the coordiantes are passed as variants containing short values. The y coordinate is an offset sizeof(variant)
            //from pvaIn (which is 16 bytes)
            object xCoordinateVariant = Marshal.GetObjectForNativeVariant(location);
            object yCoordinateVariant = Marshal.GetObjectForNativeVariant(new IntPtr(location.ToInt32() + 16));
            short? xCoordinate = xCoordinateVariant as short?;
            short? yCoordinate = yCoordinateVariant as short?;
            Debug.Assert(xCoordinate.HasValue, "Couldn't parse the provided x coordinate for show context command");
            Debug.Assert(yCoordinate.HasValue, "Couldn't parse the provided y coordinate for show context command");
            if (xCoordinate.HasValue && yCoordinate.HasValue) {
                position = new POINTS[1];
                position[0].x = xCoordinate.Value;
                position[0].y = yCoordinate.Value;
            }

            return position;
        }