How do I make an EA "quit"? | Forex Factory

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How do I make an EA "quit"?

  • #1
  • First Post: Sep 5, 2009 4:34pm Sep 5, 2009 4:34pm
Does calling the deinit() function make an EA quit? How can I make an EA bail out or quit, for inistance if it can't connect to a server or such?
  • #2
  • Sep 5, 2009 4:36pm Sep 5, 2009 4:36pm
Quoting FrinkFX
Does calling the deinit() function make an EA quit? How can I make an EA bail out or quit, for inistance if it can't connect to a server or such?
In the start function, as the first thing

if ( your creteria to stop == true ) return(0);

this will just stop it from doing anything past the if statement if it is true. It will not remove the EA from the platform.
  • #3
  • Sep 5, 2009 4:51pm Sep 5, 2009 4:51pm
Thanks for the reply

So if I call return(0) in init() from the startegy tester it will bail out?
You can't prevent the start() function from running every tick so you must specify your own criteria.

I think I get it now
  • #4
  • Sep 5, 2009 4:53pm Sep 5, 2009 4:53pm
Quoting FrinkFX
Thanks for the reply

So if I call return(0) in init() from the startegy tester it will bail out?
You can't prevent the start() function from running every tick so you must specify your own criteria.

I think I get it now
No, return(0) in the init function will just transfer to the start() you must use it in the start() to cause a loop with no instructions in the loop. The EA sits idle



Your test in the if ( ... ) could be a call to another function where your tests are done. like

if ( yourcriteria() == true ) return(0);

There are probably others who are much more gifted at MT4 programing than I, though. Maybe one of those people know how to actually cause the EA to remove itself.
  • #5
  • Last Post: Sep 5, 2009 4:59pm Sep 5, 2009 4:59pm
Quoting FrinkFX
Thanks for the reply

So if I call return(0) in init() from the startegy tester it will bail out?
bail out of init() yes. it then goes straight to start()

you can use the IsConnected() function to find out if your mt4 is connected to the broker's server.

if you want to know if the EA is running on backtester, you can use the IsTesting() function.

an example of what you'll put in the first few lines of the start() function is.

Inserted Code
int start()
{
   if(IsTesting())
   {
      return(0);
   }

   // ... other codes here ...

}

ideally, this is going to effectively disable backtesting of the EA. not sure why you'll want that though.
Programming for a better future.
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