我需要将dll函数导入到我的项目中并使用它。但是，当使用GetProcAddress（）函数将其导入到我的项目中时，它似乎不起作用。函数返回null和简单的if check结束程序。
我很确定我的代码有问题，但我似乎找不到它。下面是Library.h文件的代码

#pragma once

#include <iostream>
#include <windows.h>
#include <string>
#include <cmath>
using namespace std;

#ifdef MY_DLL_EXPORTS

#define MY_DLL_API extern "C" _declspec(dllexport)

#else 

#define MY_DLL_API extern "C" _declspec(dllimport)

#endif

struct args
{
    int Elements;
    int sum;
    int* Array;
};

DWORD WINAPI NoSynchroSum(LPVOID);
void Monitoring(int);

库. cpp文件

#include "pch.h"
#include "framework.h"
#include "Library.h"
using namespace std;

DWORD WINAPI NoSynchroSum(LPVOID arg)
{
    args* _args = (args*)arg;
    for (int i = 0; i < _args->Elements; i++)
    {
        _args->sum += _args->Array[i];
    }
    return 0;
}

void Monitoring(int Elements)
{
    int ElementsAmount = Elements;
    HANDLE handle;
    int suspendCount = 1;
    int sum = 0;
    srand(time(0));
    int* Array = new int[ElementsAmount];
    for (int i = 0; i < ElementsAmount; i++)
    {
        Array[i] = rand() % 21 - 10;
    }
    args* _args = new args;
    _args->Elements = ElementsAmount;
    _args->sum = sum;
    _args->Array = Array;
    handle = CreateThread(NULL, 0, NoSynchroSum, (LPVOID)_args, NULL, NULL);
    cout << "Counted Sum = " << sum << endl;
    CloseHandle(handle);
    delete[] Array;
    delete _args;
}

以及我的其他项目代码，我尝试在其中导入并使用函数

#include <iostream>
#include <Windows.h>
using namespace std;

int main() {

    HINSTANCE hInstance = LoadLibrary(L"D:\\Visual Studio 2022\\repos\\LabOS_7_DLL\\x64\\Debug\\DLLibrary.dll");

    if (!hInstance) {

        std::cout << "Library not loaded.\n";
        return 1;
    }

    void (*pMainFunc)(int);
    pMainFunc = (void(*)(int))GetProcAddress(hInstance, "Monitoring"); // експорт функції створення потоку
    if (!pMainFunc) 
    {
        std::cout << "Function not loaded.\n";
        return 1;
    }
    int ElementsAmount = 0;
    while (true)
    {
        cout << "enter size of array: ";
        cin >> ElementsAmount;
        if (ElementsAmount < 100)
        {
            cout << "size of array must be >=100\n";
            continue;
        }
        break;
    }
    pMainFunc(ElementsAmount);
    FreeLibrary(hInstance);

    return 0;
}