计算两点之间的距离

• 回答：

    
  
      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());