MT5 Basics

i think this code line should be replaced by this one

with CheckSessionTrade() is the one in the post #229 by Mucky

F-IOC --- important . to avoid error#4756
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do we need to add it for all market orders?

I guess YES to avoid 4756

short quiz: what will happen if you remove SymbolInfoTick() function?
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quiz" how many OrderTickets for any deal?
Position
Order
Deal


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Now:
fracture your code: use mqh files , , , (Data Structure)
advantage ..
you can use for example xy-axis setting using the same ready-made code ,,, for any future new program/expert

put it somewhere where all experts/indicators.scripts can see . .


xy-axis it is a common file . . .
also DPC must be a common file
also ChartSymbol specification must be a common file . ..

phu? any thong is missing for possible common file (code that is valid for any program)
orders entry?
TP/SL modificatio

rule: everything is common expert your own idea

phu make y's to y99 . . .instead of mine y60 .. it is a good idea to make USER-resolution lower . .

let us isolate xy_setting: we will rename function : xy_user_resolution and will be saved under include/_phu_expert/ folder
. . .
we use underscore in _phu to make it on the top

just copy paste from our main program:

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when you compile main program: no errors:

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now to isloate our very important fucntion DPC () ---- D-Theory . .

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remove it from our main code and put under _phu_expert folder
it was here:

Now:

Do it like this:
at the end: our main code . e.u. ***.mq5 may be less than 100 lines . . instead of 2500 ?
now it is available for any other expert
no need to rewrite it each time in the code code . . .

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what else is a common?

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now what about somethings like these:


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or:

is this row must be common?

Margin RESERVED ,,,, PIP VALUE , , , etc . . .
each one need a fucntion . . that recall it once , ,

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one subroutine (RM_and_PV.mqh) ) could include many fuctions like (RESERVED_MARGIN() and PIP_VALUE())

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But you had better move global variables to specific mqh file . . some kind of neatness
and move point, digits etc . . . to one of this common fuctions . .. to make our original OnInit void of these things ... just to include functions inside it. .

like this:


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and put any new variable under specific category . . .

and in this case if you compile mqh file itself, there will be no errors . .


otherwise you have to compile main code

what about this garbage?
it should be a common . . . (carry sense of common)
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