Forex Software — MQL5 errore in the code

Re: MQL5 errore in the code

2025-06-09T07:42:33Z

Hello Traders!

Thank you for the reports!

This issue appeared in recent days. It resulted from changes in the MQL code in the latest MetaTrader update.

They changed the type of some variables without giving a deprecation warning. (Or, it was!)

I updated the MQL code of all applications to match the latest MetaTrader release.

Please reload your application and re-export the Expert Advisor.

Please report any errors or warnings you may see in the MT compiler.

Trade Safe!

Re: MQL5 errore in the code

2025-06-08T19:11:27Z

HI
I've just run into I think the same issue. This has happened straight after this weekends MT5 update.
Version 5 build 5100 release date 6 June 2025
Now can't compile Expert Studio portfolios.
I'll attatch an example.

errors seen follow:-
'Portfolio Expert EURUSD H4 (3).mq5' 0
'MQL5_TRADE_ALLOWED' is deprecated, use 'MQL_TRADE_ALLOWED' instead Portfolio Expert EURUSD H4 (3).mq5 768 34
'lineWidth' - parameter conversion not allowed Portfolio Expert EURUSD H4 (3).mq5 1128 30
built-in: bool TextGetSize(const string,uint&,uint&) Portfolio Expert EURUSD H4 (3).mq5 1128 30
possible use of uninitialized variable 'lineHeight' Portfolio Expert EURUSD H4 (3).mq5 1132 36
possible use of uninitialized variable 'lineWidth' Portfolio Expert EURUSD H4 (3).mq5 1131 56
possible use of uninitialized variable 'lineHeight' Portfolio Expert EURUSD H4 (3).mq5 1143 52
'lnWidth' - parameter conversion not allowed Portfolio Expert EURUSD H4 (3).mq5 1147 29
built-in: bool TextGetSize(const string,uint&,uint&) Portfolio Expert EURUSD H4 (3).mq5 1147 29
possible use of uninitialized variable 'lineWidth' Portfolio Expert EURUSD H4 (3).mq5 1148 20
possible use of uninitialized variable 'lnWidth' Portfolio Expert EURUSD H4 (3).mq5 1148 10
possible use of uninitialized variable 'lineWidth' Portfolio Expert EURUSD H4 (3).mq5 1152 37
possible use of uninitialized variable 'lineHeight' Portfolio Expert EURUSD H4 (3).mq5 1154 34
2 errors, 8 warnings 2 8

Hope someone can davise please.

Re: MQL5 errore in the code

2025-06-08T17:34:03Z

'BOT EA Farming AUDCAD H1 2122925492.mq5' 0
'MQL5_TRADE_ALLOWED' is deprecated, use 'MQL_TRADE_ALLOWED' instead BOT EA Farming AUDCAD H1 2122925492.mq5 709 34
'lineWidth' - parameter conversion not allowed BOT EA Farming AUDCAD H1 2122925492.mq5 1078 30
built-in: bool TextGetSize(const string,uint&,uint&) BOT EA Farming AUDCAD H1 2122925492.mq5 1078 30
possible use of uninitialized variable 'lineHeight' BOT EA Farming AUDCAD H1 2122925492.mq5 1082 36
possible use of uninitialized variable 'lineWidth' BOT EA Farming AUDCAD H1 2122925492.mq5 1081 56
possible use of uninitialized variable 'lineHeight' BOT EA Farming AUDCAD H1 2122925492.mq5 1093 52
'lnWidth' - parameter conversion not allowed BOT EA Farming AUDCAD H1 2122925492.mq5 1097 29
built-in: bool TextGetSize(const string,uint&,uint&) BOT EA Farming AUDCAD H1 2122925492.mq5 1097 29
possible use of uninitialized variable 'lineWidth' BOT EA Farming AUDCAD H1 2122925492.mq5 1098 20
possible use of uninitialized variable 'lnWidth' BOT EA Farming AUDCAD H1 2122925492.mq5 1098 10
possible use of uninitialized variable 'lineWidth' BOT EA Farming AUDCAD H1 2122925492.mq5 1102 37
possible use of uninitialized variable 'lineHeight' BOT EA Farming AUDCAD H1 2122925492.mq5 1104 34
2 errors, 8 warnings 2 8

int lineWidth, lineHeight;
TextGetSize(robotTagline, lineWidth, lineHeight);

if(maxRectangles == 0)
RectLabelCreate(0, "Stats_background", 0, 0, 30, lineWidth,
linesCount * lineHeight, GetChartBackColor(0));

Re: MQL5 errore in the code

2025-06-08T15:22:42Z

Me too, but time to time it write some line that doesn’t allow the mt5 to compile it.
Look at these 2, same EA MT4 get attaced and MT5 not (will send them via PM)
Would be great to get a feedback.

Re: MQL5 errore in the code

2025-06-08T12:39:55Z

Which lines?

I have been using Mt5 ea's for a long time without noticing this error.

MQL5 errore in the code

2025-06-08T10:09:18Z

Hello,

I am getting problems when try to instal MT5 EAs, it looks like EA Studio includes some wromg Lines in the code and the MQL5 does not compile the Experts.

Any experiences?
BR
Vincenzo