Can a MQL5 EA draw an (uninterrupted) stop loss line?

Question

Can a MQL5 EA draw an (uninterrupted) stop loss line, like an indicator could?

If yes: how?

If no: what‘s next best solution?

And will they also show in the strategy tester ( backtesting ) visualization?

Thank you!

Answer 1

Yes, it can

As of 2018-03, any MQL4/5 EA can draw exactly the same range of visualisation effects on MT4/5's GUI Graphs as the Custom Indicator can, so only one's imagination is the limit.

Strategy Tester will do the same ( in case it has been invoked in a visual mode [x] set on ).

---

If yes, how?

Principally using:

ObjectCreate( anObjectNAME,
              { OBJ_TREND, OBJ_CHANNEL, OBJ_ARROW, OBJ_HLINE, OBJ_VLINE, ... },
              ...
              );
ObjectSet(    anObjectNAME,
              { OBJPROP_ANGLE, OBJPROP_COLOR, OBJPROP_PRICE1, ... },
              ...
              );

and related GUI tools, present in the MQL4/5 language.

Several "point-and-move" trading automation frameworks have been built this way and are known to support a fully graphically-based human-trader:trading-engine automation, using but mouse on GUI.

Another option is to integrate the MT4/5 Terminal platform, using as an example an external signalling/messaging plane, like ZeroMQ or nanomsg, with another GUI / MMI / smart-analytics proxies and an external GUI-front-end(s), where indeed no limits apply on one's imagination and fulfillment of visually / analytically augmented-trading needs.

Using this technology, I can confirm ~ < 80 ms RTT latencies to be reasonably achievable ( which is 2+ orders of magnitude faster, than a human-trader's perception and reactive latencies are )