MQL4 changes in language?

Hello.

Currently I save my strategies to source by SQ. 

But on some website I have discovered that old MQL4 will not be supported from MT Build 600+,

Please read details:

http://docs.mql4.com/mql4changes#compiler_difference

Especially:

“Old EX4 applications and DLLs based on old RateInfo format will not work in the new terminal. Conversion to the new format is required.”

and

“Starting from build 600, MQL4 programming language has been completely revised reaching the level of MQL5 – now you can develop trading robots in MQL4/5 using the unified MetaEditor development environment, single style, libraries and debugging tools.”

Any update on this? 

It would be great to see another SQ3 release with the code fixed and a handful of other known bugs fixed.

@Mark – If we collected together a list of high priority known bugs, could you produce another SQ3 release with these in to tide us over until SQ4 is ready?

TIA

Mike

Mike, I’ll surely  consider it.

Please compile a list of bugs you think are high priority and should be fixed in the current version 3.

The best is to contact me by private message on forum or by support email then, so I’ll not miss it here on forum. 

The best is to contact me by private message on forum 

Really? 🙂

File: mark.png

sorry, I didn’t know about this.

what issue is there with compiler exactly? it works fine for MT4.

code generator for MT5 will be only in the new version, it is quite a lot of work to do it twice.

Hard to say. Mql says only that it isnt done with compile strict. Please follow the website that I mentioned. Maybe it will help to solve the problem.

Any update on this, Mark?

Mike, I’ll surely  consider it.

 

Please compile a list of bugs you think are high priority and should be fixed in the current version 3.

 

The best is to contact me by private message on forum or by support email then, so I’ll not miss it here on forum. 

Hi Mark,

I am going to compile a list of bugs and issues I think would be simple to change for a final SQ3 release.  I wil then post it on the forum and send it to you. 

Many thanks,

Mike

Here’s some issues I think should be fixed and go into final SQ3 release.

I just want to let you know that we just released an autoupdate that fixes this. Your SQ should be updated next time you start it.

So ti is now possible to add #property strict to your EA and it will compile correctly.

Ok, I have updated SQ but I see no option to add #property strict.

Where can I find it?

there is no setting for it in SQ, what was changed was that SQ now generates code that can be compiled with #property strict.

You can add the line:

#property strict

to the beginning of generated EA file.

Will it work even if I load “old” strategies files and export again in mql?

yes, you can alway re-export old strategies in SQ and they should work as before.

MQL code was just cleaned up so that there are no errors when compiled with #property strict

#property strict in actual version SQ 3.8.1 is not. If I add line #property strict and compile to ex4 returns this errors. I instaled lasted SQ 3.8.1 and patches from august and september.

‘EURUSD_15M_21.320229.mq4    EURUSD_15M_21.320229.mq4    1    1
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    562    83
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    562    111
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    605    70
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    607    71
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    630    38
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    630    61
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    630    83
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    630    99
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    635    35
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    640    26
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    640    55
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    653    39
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    653    57
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    653    77
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    655    24
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    655    57
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    655    94
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    658    40
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    658    54
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    672    39
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    672    61
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    672    94
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    672    131
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    676    39
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    676    77
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    676    91
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    684    55
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    687    46
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    687    60
‘i’ – undeclared identifier    EURUSD_15M_21.320229.mq4    1048    8
‘i’ – undeclared identifier    EURUSD_15M_21.320229.mq4    1064    8
‘i’ – undeclared identifier    EURUSD_15M_21.320229.mq4    1091    8
‘i’ – undeclared identifier    EURUSD_15M_21.320229.mq4    1107    8
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    1223    19
‘i’ – undeclared identifier    EURUSD_15M_21.320229.mq4    1304    8
‘orderTime’ – undeclared identifier    EURUSD_15M_21.320229.mq4    1306    10
implicit conversion from ‘string’ to ‘number    EURUSD_15M_21.320229.mq4    1306    20
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    1308    13
possible use of uninitialized variable ‘lotMM    EURUSD_15M_21.320229.mq4    1380    15
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    1788    19
possible loss of data due to type conversion    EURUSD_15M_21.320229.mq4    1802    30
possible loss of data due to type conversion    EURUSD_15M_21.320229.mq4    1813    22
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    1815    56
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    1851    60
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    1851    87
possible loss of data due to type conversion    EURUSD_15M_21.320229.mq4    2117    11
implicit conversion from ‘number’ to ‘string    EURUSD_15M_21.320229.mq4    2118    17
possible loss of data due to type conversion    EURUSD_15M_21.320229.mq4    2140    65
possible loss of data due to type conversion    EURUSD_15M_21.320229.mq4    2141    70
6 error(s), 43 warning(s)        7    44
 

I apologize for mistake, it seems the previous update didn’t contain this function. I just released a new update with this fixed.

Now you can use #property strict, it will produce only a few warnings like “implicit conversion from ‘number’ to ‘string’ “.

These warnings have no effect on the EA functionality, it simply says we are converting number to string when writing message to a log.