js代码如下：

  function PointDis() {     var point1 = mxOcx.GetPoint(false,0,0,"\n 点取第一点:");    if(point1 == null)    {        alert("用户取消");        return;    }    var point2 = mxOcx.GetPoint(true,point1.x,point1.y,"\n 点取第二点:");    if(point1 == null)    {        alert("用户取消");        return;    }    var dDis=Math.abs((point1.x - point2.x) * (point1.x - point2.x)        + (point1.y - point2.y) * (point1.y - point2.y));    alert("两点距离:" + dDis.toString()); }