private void OnLButtonDown(int Flags, int X, int Y, ref object pbHandled)
{
object objType, DX, DY, DH, OID;
objType = 63;
IRender.ScreenToWorld(X, Y, ref objType, out DX, out DH, out DY, out OID);
label2.Text = "经度：" + Convert.ToString(DX) + "纬度：" + Convert.ToString(DY);//获取x,y坐标
}
