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Attachments: 2 quick questions and hopefully simple answers
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2 quick questions and hopefully simple answers

  • #1
  • First Post: Aug 29, 2009 1:19pm Aug 29, 2009 1:19pm
im just trying to program some stability into my ea
I got the "trade context busy" error and it stopped my EA

How long is it actually busy for?
Is it just whilst an EA sends info to it or is it until the trade comes back as completed?

if(IsTradeAllowed())

if(!IsTradeAllowed())

Does the lower command return the opposite of the upper command?

Thanks
Ben
  • #2
  • Aug 29, 2009 6:37pm Aug 29, 2009 6:37pm
Quoting BenScoobert
im just trying to program some stability into my ea
I got the "trade context busy" error and it stopped my EA

How long is it actually busy for?
Is it just whilst an EA sends info to it or is it until the trade comes back as completed?

if(IsTradeAllowed())

if(!IsTradeAllowed())

Does the lower command return the opposite of the upper command?

Thanks
Ben
At the risk of the blind leading the blind. I can't answer your question but I think you can do this. Give it a shot anyway, it might work.

if(IsTradeAllowed() ==false) return(0);

or

if(IsTradeAllowed() ==true) return(0);
  • #3
  • Aug 29, 2009 9:49pm Aug 29, 2009 9:49pm
Quoting BenScoobert
im just trying to program some stability into my ea
I got the "trade context busy" error and it stopped my EA

How long is it actually busy for?
Is it just whilst an EA sends info to it or is it until the trade comes back as completed?

if(IsTradeAllowed())

if(!IsTradeAllowed())

Does the lower command return the opposite of the upper command?

Thanks
Ben

  1. Depends on the broker, but it's not normally that long. A few milliseconds would be my guess.
  2. EA sends info for it.


Not necessarily. It depends on whether or not IsTradeAllowed() is true or false.

  • #4
  • Aug 30, 2009 2:14pm Aug 30, 2009 2:14pm
Quoting BenScoobert
I got the "trade context busy" error and it stopped my EA

How long is it actually busy for?
milliseconds normally up to seconds if there is a problem with the connection to the server. You can refer to the time delay you have to wait for confirmation to manual trade sometimes.
In rare occasions 'tcb' error caused a deadlock that could be cured by terminal restart only. I haven't seen that for a while though. I suppose the issue was fixed in the latest builds.
Quote
Is it just whilst an EA sends info to it or is it until the trade comes back as completed?
Only the authors of the platform can tell this for sure. What I'm saying is just a guess based on my own experience, nothing more.
Quote

if(IsTradeAllowed())

if(!IsTradeAllowed())

Does the lower command return the opposite of the upper command?
statements A and !A always opposite to each other. That's the idea of ! operator.
  • #5
  • Sep 6, 2009 1:24pm Sep 6, 2009 1:24pm
Thanks for that.

I have another question, for a change.

I have the line.

Inserted Code
if (OrdersTotal()==0) {myOrderType=0;}

Does this OrdersTotal() command return ALL orders or orders of the symbol on which the EA is attached?

I think it returns ALL orders and this is the bug in my EA not restarting until all pairs close, the bug isnt there when you run just 1 chart and 1 EA.
  • #6
  • Sep 6, 2009 1:29pm Sep 6, 2009 1:29pm
Quoting BenScoobert
Thanks for that.

I have another question, for a change.

I have the line.

Inserted Code
if (OrdersTotal()==0) {myOrderType=0;}

Does this OrdersTotal() command return ALL orders or orders of the symbol on which the EA is attached?

I think it returns ALL orders and this is the bug in my EA not restarting until all pairs close, the bug isnt there when you run just 1 chart and 1 EA.
all orders
  • #7
  • Sep 6, 2009 2:01pm Sep 6, 2009 2:01pm
shit, then theres my bug, anyone want to save me the headache and offer up some code?
  • #8
  • Sep 6, 2009 2:02pm Sep 6, 2009 2:02pm
Quoting BenScoobert
shit, then theres my bug, anyone want to save me the headache and offer up some code?
http://codebase.mql4.com/
  • #9
  • Sep 6, 2009 2:08pm Sep 6, 2009 2:08pm
  • #10
  • Sep 7, 2009 1:53pm Sep 7, 2009 1:53pm
this should do it

Inserted Code
OpenOrders=0;
   for(cnt=0;cnt<OrdersTotal();cnt++)   
   {
     OrderSelect(cnt, SELECT_BY_POS, MODE_TRADES);
      if (OrderSymbol()==Symbol())
      {                
            OpenOrders++;
      }
   }
  • #11
  • Jul 1, 2011 1:47am Jul 1, 2011 1:47am
Q1
can a boolean value be assigned to the IsTradeAllowed() function. I am trying to disable expert Advisor from the expert advisor code.

Q2
while trying to debug an EA i tried turning it into an indicator first. the indicator shows buffers but when i converted the indicator to code (i.e removed the indicator properties ) the EA doesn't open trades where the buffers were supposed to be.
  • #12
  • Jul 1, 2011 9:52am Jul 1, 2011 9:52am
Quoting Adewumi
Q1
can a boolean value be assigned to the IsTradeAllowed() function. I am trying to disable expert Advisor from the expert advisor code.
You cannot assign a value to a function. There is no publicly know function that can be used to 'disable expert advisors' in the MT4 API.

Quoting Adewumi
while trying to debug an EA i tried turning it into an indicator first. the indicator shows buffers but when i converted the indicator to code (i.e removed the indicator properties ) the EA doesn't open trades where the buffers were supposed to be.
I have no idea what you are doing and probably nobody else does. It seems you are in way over your head.
  • #13
  • Jul 1, 2011 10:10am Jul 1, 2011 10:10am
Ben:
This might be overkill, but I put it in all my EAs and it works:
if(!IsTradeAllowed()) Sleep(500); //no thread available
if(!IsTradeAllowed()) Sleep(500); //no thread available
if(!IsTradeAllowed()) Sleep(500); //no thread available
if(!IsTradeAllowed())
{
// this gets turned on and off whether thread is available
// it is also set permanently off if account is frozen
return;
}
// = = =
if(IsTradeContextBusy()) Sleep(500); //this is hit whenever there is an order being placed by script
if(IsTradeContextBusy()) Sleep(500); //or another copy of this ea in another thread
if(IsTradeContextBusy())
{
return;
}
===
Ade:
No need to set a reserved word / function, just set one of your own:
bool bKillIt = false
...
if (whatever) bKillIt=true
...
if(bKillIt) return(-1)
  • #14
  • Jul 1, 2011 10:36am Jul 1, 2011 10:36am
Y'all be postin' in a zombie thread.
You are in a maze of twisty little passages, all alike.
  • #15
  • Jul 2, 2011 1:03am Jul 2, 2011 1:03am
Ok, the question may be sound stupid but this is my reason for asking.
i am trying to write an EA that Closes all open equity at set account equity. I got an mq4 from this thread "ALL Order Related Indicators, Scripts and EA" that closes all open orders at a predefined account balance. I changed the variable from Set AccountBalance() to AccountEquity().

But this annoying thing keeps on happening.
At set account equity, The EA (in ex4) keeps on opening new orders while the EA closing the open trades continually closes them incuring several losses in the process.

I will try to make a video of this action on monday when the markets are open.

Quoting stevegee58
Y'all be postin' in a zombie thread.
zombie is not a polite term to use. Nevertheless, I know that the day someone stops learning is the day that person dies.

I have uploaded the mq4 i downloaded from the thread i mentioned earlier. thing i have tried that didn't work. have been commented out. It is however important to know that i just started learning Mql4 3weeks ago, But have been Programming in order languages since 2006.
Attached File(s)
File Type: mq4 Close All OPEN orders At Equity Target.mq4   3 KB | 399 downloads
  • #16
  • Last Post: Jul 2, 2011 5:49am Jul 2, 2011 5:49am
Quoting Adewumi
zombie is not a polite term to use. Nevertheless, I know that the day someone stops learning is the day that person dies.
He means you are posting in a 'dead' thread. Ie. it has been dormant for nearly 2 years. It is usually better to start your own thread and not risk hijacking someone else's thread.
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