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打开栅格捕捉:

axMxDrawX1.SetSysVarLong("GRIDMODE", 1);

关闭栅格捕捉:

axMxDrawX1.SetSysVarLong("GRIDMODE", 0);

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MxDrawPoint ptSNAPUNIT = new MxDrawPoint();

ptSNAPUNIT.x = 500;

ptSNAPUNIT.y = 500;

param.AddString("SNAPUNIT");

param.AddPointEx(ptSNAPUNIT,5002);

axMxDrawX1.CallEx("Mx_SetSysVar", param);

CString sVarName

系统变量名

Value

需要设置的值

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        Dim param As MxDrawResbuf

        Set param = New MxDrawResbuf

        param.AddString "CLAYER"

        param.AddString "图层1", 5005 ' 5005 = RTSTR,代码是一个字符串类型的值

        MxDrawX1.CallEx "Mx_SetSysVar", param

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 function CreateCommentLayer()

{

    var mxOcx = document.getElementById("MxDrawXCtrl");

        mxOcx.AddLayer("MyComment");

        mxOcx.LayerName = "MyComment";

        var param = mxOcx.NewResbuf();

        param.AddString("CLAYER");

        param.AddStringEx("MyComment",5005);

        mxOcx.CallEx("Mx_SetSysVar", param);

}

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        Dim param As MxDrawResbuf

        Set param = New MxDrawResbuf

        param.AddString "CELTYPE"

        param.AddString "DOT", 5005 ' 5005 = RTSTR,代码是一个字符串类型的值

        MxDrawX1.CallEx "Mx_SetSysVar", param

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axMxDrawX1.SetSysVarLong("ORTHOMODE", 1);

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resbuf rb;

            rb.restype = RTPOINT;

            rb.resval.rpoint[X]= prvPoint.x;

            rb.resval.rpoint[Y]= prvPoint.y;

            rb.resval.rpoint[Z]= prvPoint.z;

            Mx::mcedSetVar(_T("LASTPOINT"),&rb);

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IDispatchPtr spRet1(m_ocx.CallLongParam1(_T("Mx_SetPoloarTracee"),1),false);

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int iRet = 0;

axMxDrawX1.GetSysVarLong("AUTOSNAP",ref iRet);

iRet |= 8;

axMxDrawX1.SetSysVarLong("AUTOSNAP",iRet);

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MrxDbgRbList spVal  = Mx::mcutNewRb(RTSHORT);

    Mx::mcedGetVar(_T("OSMODE"),spVal.data());

    // 最近点捕足的值为512,进行位运算，去掉最近点捕捉标志 

    int iNewMode = spVal.data()->resval.rint & (~512);

    // 设置新值

    spVal.data()->resval.rint = iNewMode;

Mx::mcedSetVar(_T("OSMODE"),spVal.data() );

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axMxDrawX1.SetSysVarLong("OSMODE", 0);

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MrxDbgUtils::setSysVar(_T("DYNTRACE"),0);

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axMxDrawX1.SetSysVarLong("DYNTRACE", 0);