System.Windows.Forms.Control.HighOrder C# (CSharp) Method

		internal static int HighOrder (long param) {
			return ((int)(short)(param >> 16));
		}

        protected virtual bool HandleNCHitTest(ref Message m)
        {
            int x = Control.LowOrder((int)m.LParam.ToInt32());
            int y = Control.HighOrder((int)m.LParam.ToInt32());

            NCPointToClient(ref x, ref y);

            FormPos pos = FormPosForCoords(x, y);

            if (pos == FormPos.TitleBar)
            {
                m.Result = new IntPtr((int)HitTest.HTCAPTION);
                return(true);
            }

            if (!IsSizable)
            {
                return(false);
            }

            switch (pos)
            {
            case FormPos.Top:
                m.Result = new IntPtr((int)HitTest.HTTOP);
                break;

            case FormPos.Left:
                m.Result = new IntPtr((int)HitTest.HTLEFT);
                break;

            case FormPos.Right:
                m.Result = new IntPtr((int)HitTest.HTRIGHT);
                break;

            case FormPos.Bottom:
                m.Result = new IntPtr((int)HitTest.HTBOTTOM);
                break;

            case FormPos.TopLeft:
                m.Result = new IntPtr((int)HitTest.HTTOPLEFT);
                break;

            case FormPos.TopRight:
                m.Result = new IntPtr((int)HitTest.HTTOPRIGHT);
                break;

            case FormPos.BottomLeft:
                m.Result = new IntPtr((int)HitTest.HTBOTTOMLEFT);
                break;

            case FormPos.BottomRight:
                m.Result = new IntPtr((int)HitTest.HTBOTTOMRIGHT);
                break;

            default:
                // We return false so that DefWndProc handles things
                return(false);
            }
            return(true);
        }