从dll导出包含std :: objects(vector,map等)的类

// MyClass.h
#pragma once

#include<vector>
#include <map>

class __declspec(dllexport) MyClass
{
public:
    std::vector<int> GetVector();
    std::map<int, std::string> GetMap();
};

// MyClass.cpp
#include "MyClass.h"

std::vector<int> MyClass::GetVector()
{
    std::vector<int> vec = {1, 2, 3};
    return vec;
}

std::map<int, std::string> MyClass::GetMap()
{
    std::map<int, std::string> myMap = {{1, "one"}, {2, "two"}, {3, "three"}};
    return myMap;
}

// main.cpp
#include<iostream>
#include "MyClass.h"

// 添加__declspec(dllimport)以导入MyClass
class __declspec(dllimport) MyClass
{
public:
    std::vector<int> GetVector();
    std::map<int, std::string> GetMap();
};

int main()
{
    MyClass myObj;
    std::vector<int> vec = myObj.GetVector();
    std::map<int, std::string> myMap = myObj.GetMap();

    for (int num : vec)
    {
        std::cout<< num<< std::endl;
    }

    for (const auto& [key, value] : myMap)
    {
        std::cout<< key << ": "<< value<< std::endl;
    }

    return 0;
}