is mql4 and mql5 still is different?

[mh_amri]

I've read some post that MQL5 is merged into the MQL4 but still couldn't find a definitive answer that what language I should write my code?

checking the documentations, for example, for `ENUM_INIT_RETCODE` the number of item in the enum is different

https://docs.mql4.com/basis/function/events

https://www.mql5.com/en/docs/event_handlers/oninit

MetaEditor also is no help in here. either I write Mql5 syntax or Mql4 it get compiled

• I'm targeting MetaTrader4 so as a newbie I don't know which language I should write?
• is every single syntax of MQL5 works in MT4 or just a bunch of them? which one and how can I find them?
• what MQL language version MetaTrader4 supports?
• for working with MetaTrader4, what articles I should read? those on Mql5.com or those on Mql4.com?
• for working with MetaTrader4, if I want to use a library, I should use those on MQL5.com or those on MQL4.com?
  

[Carl Schreiber]

mh_amri:

I've read some post that MQL5 is merged into the MQL4 but still couldn't find a definitive answer that what language I should write my code?

checking the documentations, for example, for `ENUM_INIT_RETCODE` the number of item in the enum is different

https://docs.mql4.com/basis/function/events

https://www.mql5.com/en/docs/event_handlers/oninit

MetaEditor also is no help in here. either I write Mql5 syntax or Mql4 it get compiled

I'm targeting MetaTrader4 so as a newbie I don't know which language I should write? is every single syntax of MQL5 works in MT4 or just a bunch of them? which one and how can I find them?

what MQL language version MetaTrader4 supports?

Choose MQL5 - it is the newer one, regularly updated, faster, ..., in short its the futrure, mql4 the past.

[mh_amri]

Carl Schreiber:
Choose MQL5 - it is the newer one, regularly updated, faster, ..., in short its the futrure, mql4 the past.

 

in my limited knowledge for example , the order types are different in MetaTrader4 to MetaTrader5? so how do I target MQL5?