//int                 m_IsHighlighted;
        //int                 m_nLineThickness;
        //UINT                m_nLinePattern;

        Color GetColor(UnsafeNativeMethods.DisplayAttrsColor which)
        {
            IntPtr pConstThis = ConstPointer();
            int    argb       = UnsafeNativeMethods.CDisplayPipelineAttributes_GetSetColor(pConstThis, which, false, 0);

            return(System.Drawing.Color.FromArgb(argb));
        }
        void SetColor(UnsafeNativeMethods.DisplayAttrsColor which, Color c)
        {
            IntPtr pThis = NonConstPointer();

            UnsafeNativeMethods.CDisplayPipelineAttributes_GetSetColor(pThis, which, true, c.ToArgb());
        }