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Import historical data in MT5

Hi guys, I would like to develop an EA to mainly trade CFD (indices, commodities etc...) and I would obviously like to backtest the whole thing... The problem is that on that kind of CFD historical data provided by the broker is not complete, usually only a few months are available and that's simply

Using classes defined in a .dll

Hi everybody, I was evaluating which is the best choice among MQL4 and MQL5, I'm a software developer so I really appreciate the OOP introduced in MQL5. I have a C++ .dll which exposes some useful classes, my question is: can I directly use the classes defined in an external .dll from MQL5. I think