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I need an to call a python script in my expert adviser when OnTick occurs which I did via ShellExecuteW. However, I need to EA to wait until ShellExecuteW finishes its job. Is that doable ? I have read this too... 

hi, I come from computer science background and I see it can get tricky to develop complex algorithms in pure MQL. Is there any library for handling creating and using complex data structures (eg. list queue stack) in mql

Dear All, I am trying to run strategy tester for mt4 from command line to see how parameter changes would impact back-test results.  I have found  this link  also I found a help topic "Configuration at start up"... so I followed the

I have been trying to find out what is the use of  IsTradeAllowed   function? in the definition it say " Checks  if the Expert Advisor is allowed to trade and trading context is not busy. " does that mean all trading Expert Advisers

hello all, I am supposed to re-implement iATR in Python cuz we want to show its values on web. I have been trying to do this as described by the wiki page  https://en.wikipedia.org/wiki/Average_true_range But, unfortunately the numbers don't

Hi All, I am new MQL4/5 .... I am just running tests at the moment to familiarize myself with function etc... https://docs.mql4.com/check/isoptimization I tried the below EA code in the optimization mode given the below settings in strategy tester as

I calling an indicator in my EA using iCustom, and the indicator has an input parameter . How can back-test the EA using different input values of the indicator's input parameter... Of course I can set a default value and compile the indicator with

Dear All, It has been 3-4 weeks since I started coding in mq4.  I have developed an EA which creates buy/sell orders. I used slippage = 3, but, since I used to get error 138 reqoute  most of the time I came up with below idea for both