How to invoke MQL4 functions from C++?

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I'm a C++ programer, I want to write my trading system that only use C++, I see that ea can use dll, but how the dll invoke scripts function such as iMACD?
is there any header files for c++?

If not, should support OOP programming in next version?
thanks

[Rashid Umarov]

No, it's impossible to invoke invoke MQL4 scripts functions from dll.

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How about the system lib functions, such as iMACD, iBands?

[Rashid Umarov]

No.

[okwh]

you can use MQL to call dll function to send data to dll. but can not use dll to call MQL function to get data.