Dll 导出类 [示例代码]

1、Dll相关代码

MyDll.h

#ifdef DLL1_API
#else
#define DLL1_API extern "C" __declspec(dllimport)
#endif
DLL1_API int Add(int a,int b);
DLL1_API int Sub(int a,int b);
class __declspec(dllexport) Person
{
public:
    Person(char *name);
    char*   m_Name;
    int     m_Age;
};

#ifdef DLL1_API #else #define DLL1_API extern "C" __declspec(dllimport) #endif DLL1_API int Add(int a,int b); DLL1_API int Sub(int a,int b); class __declspec(dllexport) Person { public: Person(char *name); char* m_Name; int m_Age; };

MyDll.cpp

#define DLL1_API extern "C" __declspec(dllexport)
#include "MyDll.h"
#include <Windows.h>
#include <stdio.h>
#pragma comment(linker,"/DLL")
#pragma comment(linker,"/ENTRY:DllMain")
int Add(int a,int b)
{
    return a+b;
}
int Sub(int a,int b)
{
    return a-b;
}
Person::Person(char *name)
{
    m_Name = name;
}

#define DLL1_API extern "C" __declspec(dllexport) #include "MyDll.h" #include <Windows.h> #include <stdio.h> #pragma comment(linker,"/DLL") #pragma comment(linker,"/ENTRY:DllMain") int Add(int a,int b) { return a+b; } int Sub(int a,int b) { return a-b; } Person::Person(char *name) { m_Name = name; }

编译链接，如下图：

2、调用dll中类

Main.cpp

#include <iostream.h>
#include <stdio.h>
#include <windows.h>
#include "MyDll.h"
#pragma comment(lib,"MyDll.lib")
void main()
{
    int x=3;
    int y=9;
    int z=Add(x,y);
    printf("%d+%d=%d /r/n", x,y,z);

    Person pt("123");
    cout<<pt.m_Name<<endl;
}

#include <iostream.h> #include <stdio.h> #include <windows.h> #include "MyDll.h" #pragma comment(lib,"MyDll.lib") void main() { int x=3; int y=9; int z=Add(x,y); printf("%d+%d=%d /r/n", x,y,z); Person pt("123"); cout<<pt.m_Name<<endl; }

编译链接，如下图：

from:

http://blog.csdn.net/wangningyu/article/details/5467550