private void OnTest()
            {
                MxDrawUiPrPoint getPt1 = new MxDrawUiPrPoint();
                getPt1.message = "1点:";
                if(getPt1.go() != MCAD_McUiPrStatus.mcOk)
                    return;

                MxDrawUiPrPoint getPt2 = new MxDrawUiPrPoint();
                getPt2.message = "2点:";
                getPt2.basePoint = getPt1.value();

                if (getPt2.go() != MCAD_McUiPrStatus.mcOk)
                    return;


                MxDrawUiPrPoint getPt3= new MxDrawUiPrPoint();
                getPt3.message = "3点:";
                getPt3.basePoint = getPt1.value();

                MxDrawResbuf param = new MxDrawResbuf();
                param.AddPoint(getPt1.value());
                axMxDrawX1.CallEx("Mx_SetPreviousInputPoint", param);
                if (getPt3.go() != MCAD_McUiPrStatus.mcOk)
                    return;
            }