static extern IntPtr GetStockObject(StockObjects fnObject);

    Private Shared Function GetStockObject(fnObject As StockObjects) As IntPtr

    public static extern int GetStockObject(int nStockBrush);

int hBrush = GetStockObject(NULL_BRUSH);

            wndclass.hbrBackground = Win32.GetStockObject(StockObjects.WHITE_BRUSH);