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In MetaTrader 4 EA running,what is the error 133 of OrderSend function?

In MetaTrader 4 EA running,what is the error 133 of OrderSend function

1

Can you explain tick_volume and real_volume in struct MqlRates?

Can you explain tick_volume and real_volume in struct MqlRates

2

In EA testing, the data can not be written to a CSV file?

In EA testing , the data can not be written to a CSV file

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"MetaTrader has stopped working...". Have you encountered this problem? Thank you for entering my topic.

The MQL program (script or Expert Advisor) calls the Visual C++ DLL for network communication, the DLL interface function creates a thread to wait for and receive data, when the socket has data arrival, the thread receives the data and then inform the script or Expert Advisor to display it in the