CODEWITHSUNDEEP
pythonc++dllctypes
Wock
Wock

Reputation: 53

ctypes can't find find dll function

I'm a complete beginner at C++ and have been trying to access a C++ function from Python using a DLL through ctypes. I always get the error AttributeError: function 'my_function' not found when running my code.

Header.h

#pragma once

int my_function(void);

Source.cpp

#include "Header.h"

int my_function(void)
{
    return(17); //test
}

ctypesTest.py

import ctypes

if __name__ == "__main__":

    mydll = ctypes.CDLL("MyDLL.dll")

    print(mydll.my_function())

Every time I run the Python script I get the attribute error.

I only need values out of my intended function.

Upvotes: 1

Views: 1738

Answers (1)

Wock
Wock

Reputation: 53

@Mikel Rychliski answered my question.

Header.h

#pragma once

#define DllExport __declspec( dllexport )

extern "C"
{
    __declspec(dllexport) int my_function(void);
}

Upvotes: 2

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