OrderModify undeclared identifier

[Thomas Mainguy]

Hi everyone,

The include of the file Trade.mqh doesn't seem to be working for me (see picture include)... I still get the error 'OrderModify' - undeclared identifier

I've tried all there is in the picture joined (solutions).

[Fernando Carreiro]

Thomas Mainguy: The include of the file Trade.mqh doesn't seem to be working for me (see picture include)... I still get the error 'OrderModify' - undeclared identifier. I've tried all there is in the picture joined (solutions).

Regarding the image "solutions.png", I have no idea where you got that, but there is no OrderModify function in MQL5, only in MQL4.

There is however, an OrderModify CTrade class method, under the MQL5 Standard Library, but it has a different functionality to the function as used in MQL4.

MQL4:

OrderModify

Modification of characteristics of the previously opened or pending orders

Trade Functions

MQL5 Standard Library:

OrderModify

Modifies the pending order parameters

[Fernando Carreiro]

Thomas Mainguy: The include of the file Trade.mqh doesn't seem to be working for me (see picture include)... I still get the error 'OrderModify' - undeclared identifier.  I've tried all there is in the picture joined (solutions).

If you need help with your code, please show all relevant code usingthe CODE button (Alt-S). Don't show screenshots of code.

Your topic has been moved to the section: Expert Advisors and Automated Trading — In the future, please consider which section is most appropriate for your query.

[Thomas Mainguy]

Thanks a lot Fernando Carreiro. Sorry for the misscategorisation and would you happen to know if we can modify an already open order in mql5?

[Fernando Carreiro]

By the way, if this is about generated code by ChatGPT, then please stop using it. It produces horrible code, mixing MQL4 and MQL5, which cannot be fixed.

[Fernando Carreiro]

Thomas Mainguy #: Thanks a lot Fernando Carreiro. Sorry for the misscategorisation and would you happen to know if we can modify an already open order in mql5?

Do you mean a Pending Order or do you mean a Position?

For a Position, ...

Yes! Either use the PositionModify method from the CTrade class or ...
... use the OrderSend function with the TRADE_ACTION_SLTP request action.

For a Pending Order, ...

Yes! Either use the  OrderModify method from the CTrade class (as already mentioned) or ...
... use the OrderSend function with the TRADE_ACTION_MODIFY request action.

[Thomas Mainguy]

Fernando Carreiro #:

Do you mean a Pending Order or do you mean a Position?

Thanks a lot that worked!