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C++/CLI. I can use serial port in myForm.h, but I need to send serial port messages also from file.cpp. How do I do that?

private: System::IO::Ports::SerialPort^ serialPort1;

In myForm.h I can send message to serial port this way:

What I have tried:

I don't have a clue how to send a message to serial port from some other file than myForm.h...
Updated 25-Jan-23 4:54am

1 solution

You do it exactly the same way, create a SerialPort object reference and call the relevant method(s).
System::IO::Ports::SerialPort^ serialPort1;
// set any speed. parity values etc.
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WantToLearn1 26-Jan-23 5:00am    
Even the port is already opened in myForm.h?
Richard MacCutchan 26-Jan-23 6:03am    
Then you just need to pass the reference object to the other file. Same as any similar methods in C++/CLI.
WantToLearn1 26-Jan-23 7:09am    
Is the serialPort1 the object? I changed it to public for a start.
Richard MacCutchan 26-Jan-23 7:46am    
Yes, but you only need to make it public if the code that you want to run is using a reference to the myForm class.
WantToLearn1 26-Jan-23 8:58am    
Thanks. I need to study more how these things work and how to use myForm class from another cpp.

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