Guide me in learning MQL coding

Hi

I have started learning MQL and coding my first EA. Whenever I stuck with logic/syntax I search FF for any similar code for reference.

If I failed to find a solution I will post my doubts in this thread and hope Seniors/Experts guide me whenever they find some spare time.

I also welcome any beginners to post their coding doubts here instead of opening a new thread so that we can keep this thread active.

...........
logical doubt.

my EA places buystop /sellstop orders and modifies stoploss to BE at certain pips movement.

Now I wanted to include some commands whenever a BE order is hit.

How do I findout if an Order is stopped out at BE.


Thanks

I am assuming that your EA is as simple as possible. If not, there are too many possibilities for me to answer.

Once the order is opened, you should keep track of its ticket number, which is returned by the OrderSend() function. I assume that you update the SL with OrderModify() at the appropriate point with the order open price. You should also keep track of this price. Once the Bid/Ask has hit this price, you should use OrderSelect() to verify that the trade was closed. It will return false if the order doesn't exist (ie. closed) and true if still open. I suppose you could call OrderSelect() with the History option as well, but that shouldn't be necessary.

Hope this helps.

Thank you.

I have found a solution and it works for now. I am not sure is it fool proof, any comments?

i=OrdersHistoryTotal();
OrderSelect(i, SELECT_BY_TICKET,MODE_HISTORY);
if(OrderCloseTime()!=0)
{
if(OrderType() == OP_BUY && OrderClosePrice() == OrderStopLoss() && secondlong==false)
{
Print("BUY BreakEven "+OrderClosePrice());
longsignal1=true;
secondlong=true;
retrace=0.001;
}
if(OrderType() == OP_SELL && OrderClosePrice() == OrderStopLoss() && secondshort==false)
{
Print("SELL BreakEven "+OrderClosePrice());
shortsignal1=true;
secondshort=true;
retrace=0.001;
}
}

Your code is trying to select the latest trade, but you specified the ticket option, not the position option.


I'm not sure why this clause is required. If you selected the right trade, you don't need this logic - it is redundant.


You should use code tags (# icon) to make your code more readable.

I am basically a copy/paste programmer. I now understand its very dangerous to code without understanding the real concept. I will work on this.

Thanks.

http://www.amazon.com/Expert-Advisor.../dp/0982645902

This book gives a reasonable overview and can get you started.

usasa,

You may as well learn this now.........you are going to have grey hairs with this statement :-


You cannot compare doubles in MQL directly. This is due to the way MQL deals with floating point arithmetic. Let us not even consider the fact that this statement does not factor in any slippage. Your closeprice(or fill) will almost never be spot on with your stoploss.

I can also tell you that you that you are attempting to create an 'event monitoring' function.......and this particular task is quite challenging in MQL....... I, personally, would find something easier to start with. Even amongst the 'pros' there is some debate on the best way to detect if an order has been closed by Stoploss.

Thanks and I totally agree with you.

I am trying to code as advised by CodeMeister to keep track of orders.
which is also a big task for me... let's see.