Hi,
I have a managed class dll from c#. Using this guide here https://www.codeproject.com/articles/556582/usingplusc-plusfromplusnativeplusc-b-bpluswith I was able to create a wrapper around my managed library with C++/CLI. Then created a unmanaged c++ library using that. I've tested it in a console application and everything works fine, but when I try to access the unmanaged c++ library using DllCall it does not work.
#C sharp
public class MathTest
{
public int add(int x, int y) {
return x + y;
}
}
#Wrapper
#include "pch.h"
#using "TEST3.dll"
#include <msclr\auto_gcroot.h>
#include "Wrapper.h"
using namespace System::Runtime::InteropServices;
class MathTestWrapperPrivate
{
public: msclr::auto_gcroot<MathTest^> MathTest;
};
MathTestWrapper::MathTestWrapper() {
_private = new MathTestWrapperPrivate();
_private->MathTest = gcnew MathTest();
}
int MathTestWrapper::add(int a, int b) {
return _private->MathTest->add(a, b);
}
#Unmanaged dll
#include "pch.h"
#include "testdll.h"
#include "Wrapper.h"
int add(int a, int b) {
MathTestWrapper w;
return w.add(a, b);
}
#testdll.h
#pragma once
#ifdef TESTDLL_EXPORTS
#define TESTDLL __declspec(dllexport)
#else
#define TESTDLL __declspec(dllimport)
#endif
extern "C" TESTDLL int add(int a, int b);
