C++ dll调用-动态（显式）

浏览数：28 / 时间：2015年06月08日

C++ dll调用-动态（显式）

废话不说上代码, 
dll 头文件 j_test.h

#pragma once
extern "C"_declspec(dllexport) void maopao(int *p, int count);
extern "C"_declspec(dllexport) int test(int *p, char* count);
extern "C"_declspec(dllexport) int sum(int  i1,  int  i2);
class j_test
{

public:
    j_test();
    ~j_test();
    void maopao(int *p, int count);
    int sum(int  i1, int  i2);
    int test(int *p, char* count);
};

dll 实现类 j_test.cpp

#include "j_test.h"


j_test::j_test()
{
}


j_test::~j_test()
{
}

 
void maopao(int *p, int count)
{
    int temp = 0;
    for (int i = 1; i<count; i++)
    {
        for (int j = count - 1; j >= i; j--)
        {
            if (p[j]>p[j - 1])
            {
                temp = p[j];
                p[j] = p[j - 1];
                p[j - 1] = temp;
            }
        }
    }
}

int test(int *p, char* count){
    count[0] = (char)p[0];
    count[1] = (char)p[1];
    return 0;
}
int sum(int  i1, int  i2){

    return i1 + i2;
}

调用方头文件

goo.h

#pragma once
class goo
{
public:
    goo();
    ~goo();
    void main(void);
};

goo.cpp

#include "goo.h"


goo::goo()
{
}


goo::~goo()
{
}
 
#include<iostream>
#include<Windows.h>
#include<time.h>
typedef int(*Dllfun)(int *, int);
typedef int(*TestFun)(int *, char *);
typedef int(*SumFun)(int  , int  );
using namespace std;
int main()
{
    Dllfun maopao1;
    HINSTANCE hdll;
    hdll = LoadLibrary("F:/workspaces/visual studio 2013/Projects/project-1/Project1/Debug/Project1.dll");
    if (hdll == NULL)
    {
        FreeLibrary(hdll);
    }
    maopao1 = (Dllfun)GetProcAddress(hdll, "maopao");
    if (maopao1 == NULL)
    {
        FreeLibrary(hdll);
    }
    int a[10];
    srand(time(0));
    for (int i = 0; i<10; i++)
        a[i] = rand() % 50;
    maopao1(a, 10);
    for (int i = 0; i<10; i++)
        cout << a[i] << endl;
    int b;
    char cs[10];
    TestFun testFun = (TestFun)GetProcAddress(hdll, "test");
    b = testFun(a, cs);
    cout << "cs = .............."  << endl;
    for (int i = 0; i<10; i++)
        cout << cs[i] << endl;
    cout << "b=" << b << endl;

    cout << "sumFun = .............." << endl;
    SumFun  sumFun = (SumFun)GetProcAddress(hdll, "sum");
    b = sumFun(3, 4);
    cout << "b=" << b << endl;





    cin >>  b;
    
    FreeLibrary(hdll);

}