​​private void DrawFlag(object sender, EventArgs e)​​

​​{​​

​​MxDrawResbuf param;​​

​​param = ​​​​new​​​ ​​MxDrawResbuf();​​

​​MxDrawPoint point;​​

​​point = ​​​​new​​​ ​​MxDrawPoint();​​

​​point.x = 100;​​

​​point.y = 100;​​

​​param.AddPoint(point);​​

​​MxDrawResbuf ret;​​

​​ret = (MxDrawResbuf)axMxDrawX1.CallEx(​​​​"ExApp_AddFlag"​​​​, param);​​

​​MessageBox.Show(ret.AtLong(1).ToString());​​

​​}​​