生成dll并供外部调用

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头文件

#pragma once
#define DLL_EXPORT
#if defined (DLL_EXPORT)
#define GIRLAPI _declspec(dllexport)
#else
#define GIRLAPI _declspec(dllimport)
#endif

#include<string>

class Girl
{
public:
    virtual void           getType() = 0;
    virtual std::string    getType(std::string) = 0;
};
extern "C" GIRLAPI Girl * createGirl();

源文件

#include"girlBase.h"
#include<iostream>
class MyGirl :public Girl
{
public:
    void getType()
    {
        std::cout << "fill up her cunt?
";
    }
    std::string getType(std::string str)
    {
        return str;
    }
};

Girl* createGirl()
{
    MyGirl *girl=new MyGirl;
    return girl;
}

测试文件

#include "../testDll/girlBase.h"
#pragma comment(lib,"testDll.lib")

#include <iostream>

using namespace std;

int main()
{
    Girl*girl=createGirl();
    girl->getType();
    cout<<girl->getType("HOT")<<endl;
    delete girl;

    system("pause");
    return 0;
}

运行结果：