MQL4 Guide

Quoting KuPretMAn

Disliked

hi Rick....
how to code scan profit(plus or minus)???in one OP...
i just want try write EA.... if profit= -50... and then OP opposite order...

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Quoting pgd

Disliked

Hello folks!

I am in the process of learning MQL 4. I am stuck here. could not find a solution through searches on the net. could someone please help...

my script needs to do this:

Check open positions ==>
if I have no long position in EURUSD {Open BUY order in EURUSD at market}.
AND
if I have no short position in EURJPY {Open SELL order in EURJPY at market}.

Thanks in advance.
Cheers.

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int orders = OrdersCount(OP_BUY);
if (orders == 0) Buy(...

int OrdersCount(string symbol, int type)
{
   ...
}

Quoting RickD

Disliked

Right, use OrdersCount function from the first page of the topic.

Inserted Code

int orders = OrdersCount(OP_BUY);
if (orders == 0) Buy(...

You can modify OrdersCount function to pass the symbol as param:

Inserted Code

int OrdersCount(string symbol, int type)
{
   ...
}

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double Lot = 0.1;
 
//+------------------------------------------------------------------+
//| script program start function                                    |
//+------------------------------------------------------------------+
int start()
  {
//----
int orders = OrdersCount("AUDJPY",OP_BUY);
   while(orders == 0)
      {
       OrderSend("AUDJPY",OP_BUY, Lot, MarketInfo("AUDJPY",MODE_ASK), 2, NULL, NULL, NULL, 0, 0, CLR_NONE);
      }
 
orders = OrdersCount("GBPUSD",OP_BUY);
   while(orders == 0)
      {
       OrderSend("GBPUSD",OP_BUY, Lot, MarketInfo("GBPUSD",MODE_ASK), 2, NULL, NULL, NULL, 0, 0, CLR_NONE);
      }
 
//----
   return(0);
  }
//+------------------------------------------------------------------+

Quoting RickD

Disliked

I suggest to use the following function:

Inserted Code

extern double Lots = 0.1;
extern double MinLot = 0.1;
extern double MaxLot = 5.0;
extern int LotPrec = 1;
extern bool DynamicLot = false;
extern double LotStep = 0.1;
extern double BalanceStep = 500;
 
double GetLots() 
{
  double lots = Lots;
 
  if (DynamicLot)
  {
    lots = NormalizeDouble(LotStep*AccountBalance()/BalanceStep, LotPrec);  
  }
 
  lots = MathMax(lots, MinLot);
  lots = MathMin(lots, MaxLot);
  return (lots);
}

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Quoting hefhem911

Disliked

hello Rick please i don't know if you can just teach or explain to me how to save EA's in .ex4 format. thank you.

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Quoting dutch45612

Disliked

Well you have two option to do so....

1.The simpliest, open up your metaquote language editor, you can open it in the metatrader platform by tool==>metaquote language editor, or by pressing F4...Or run the exe file directly in the metatrader folder. Then in the editor, press "compile"...Et voila !

2. Simply put your .mq4 (you could edit your code in a simple notepad and then change the extention .txt to==> .mq4), and put your .mq4 in the right folder, if it is an EA, in the expert folder, if it is an indi, in the expert/indicator folder....And...

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Quoting lordgbengs

Disliked

pls i just need your guide on this,am trying to export data form metatrader to excel which i did successfully,but i want the data to be updating itself daily in excel i.e open.high,low,close.pls how can i do that or if you have someone that can help on this.thanks.

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Quoting Libernati156

Disliked

Where is the best resource for actually learning how to code this language for trading in MT4? I've seen the various online courses but they aren't the full-blown coursework that needs to be out there to show us what you know. I've searched AMazon...there isn't ONE programming book on the market for this language.

I see a ripe market here....

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Quoting pgd

Disliked

RickD,

Did this -- Gives compilation error:
"'OrdersCount' - function is not defined"

[code]
double Lot = 0.1;

//+------------------------------------------------------------------+
//| script program start function...

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Quoting Explorer3333

Disliked

Hi,

I have a question if some programmer kind enough to help.

How to find out programmatically:

1. The account type that I allow to trade? like Standard=100,000 or Mini=10,000

2. The account leverage for my account? like 200:1 or 400:1

3. The minimum lot size that I can trade? like 0.01 lots

All of the above for live account.

Thanks, explorer

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