如何设置系统变量？

• 回答：

          private void SetSysVar_Click(object sender, EventArgs e)
          {
               MxDrawResbuf spRet
                   = (MxDrawResbuf)(axMxDrawX1.Call("SetSysVar", "\"ORTHOMODE\",1"));
  
  
              if(spRet.AtString(0) == "Ok")
              {
                  MessageBox.Show("设置ORTHOMODE变量成功");
              }
  
          }