Presenting the book "MQL5 Programming for Traders" - page 3

 
Stanislav Korotky #:

What's your problem exactly? The post you quoted is about unimportant warning (due to changes in MQL5) which does not affect EA work - both tester and online runs should be ok.

In my opinion all warnings should be eliminated. At least it is confusing. 
 
Dr Matthias Hammelsbeck #:
In my opinion all warnings should be eliminated. At least it is confusing. 

There were no warnings at the time of writing. It's an artifact of subsequent change in MQL5. You can comment out the line with Print("Unresolved int value as enum: ", i, " for ", TYPENAME(TradeState)) in TradeBaseMonitor.mqh.

Reason: