• windows c dll的创建与调用


    DLL代码:

    // TestDynamic.cpp: implementation of the TestDynamic class.
    //
    //////////////////////////////////////////////////////////////////////
    
    #include "TestDynamic.h"
    #include <windows.h>
    
    //////////////////////////////////////////////////////////////////////
    // Construction/Destruction
    //////////////////////////////////////////////////////////////////////
    
    BOOL APIENTRY DllMain( HANDLE hModule,   
                           DWORD  ul_reason_for_call,   
                           LPVOID lpReserved  
                         )  
    {  
        return TRUE;  
    }  
    
    __stdcall int Plus(int x, int y)
    {
        return x + y;
    }
    
    __stdcall int Sub(int x, int y)
    {
        return x - y;
    }
    
    __stdcall int Mul(int x, int y)
    {
        return x * y;
    }
    
    __stdcall int Div(int x, int y)
    {
        return x / y;
    }
    // TestDynamic.h: interface for the TestDynamic class.
    //
    //////////////////////////////////////////////////////////////////////
    
    #if !defined(AFX_TESTDYNAMIC_H__5BBAD36E_608D_4D94_B6D6_19404806F6AE__INCLUDED_)
    #define AFX_TESTDYNAMIC_H__5BBAD36E_608D_4D94_B6D6_19404806F6AE__INCLUDED_
    
    #if _MSC_VER > 1000
    #pragma once
    #endif // _MSC_VER > 1000
    
    extern "C" __declspec(dllexport) __stdcall int Plus(int x, int y);
    
    extern "C" __declspec(dllexport) __stdcall int Sub(int x, int y);
    
    extern "C" __declspec(dllexport) __stdcall int Mul(int x, int y);
    
    extern "C" __declspec(dllexport) __stdcall int Div(int x, int y);
    
    #endif // !defined(AFX_TESTDYNAMIC_H__5BBAD36E_608D_4D94_B6D6_19404806F6AE__INCLUDED_)

    调用程序主代码:

    // TestDll.cpp : Defines the entry point for the console application.
    // 隐式调用
    
    #include "stdafx.h"
    
    #pragma comment(lib,"testDynamic.lib");
    
    extern "C" __declspec(dllimport) __stdcall int Plus(int x, int y);
    extern "C" __declspec(dllimport) __stdcall int Sub(int x, int y);
    extern "C" __declspec(dllimport) __stdcall int Mul(int x, int y);
    extern "C" __declspec(dllimport) __stdcall int Miv(int x, int y);
    
    int main(int argc, char* argv[])
    {
        int t = Plus(1,1); 
        printf("%d
    ",t);
        return 0;
    }
    // TestDll.cpp : Defines the entry point for the console application.
    // 显式调用
    
    #include "stdafx.h"
    #include <windows.h>
    
    
    typedef int (__stdcall *lpPlus)(int, int);
    typedef int (__stdcall *lpSub)(int, int);
    typedef int (__stdcall *lpMul)(int, int);
    typedef int (__stdcall *lpDiv)(int, int);
    
    int main(int argc, char* argv[])
    {
        lpPlus myPlus;
        lpSub mySub;
        lpMul myMul;
        lpDiv myDiv;
    
        HINSTANCE hModule = LoadLibrary("testDynamic.dll");
        myPlus = (lpPlus)GetProcAddress(hModule, "Plus");
    
        int x = myPlus(1,1);
        printf("%d
    ",x);
    
        return 0;
    }

    PS:注意__stdcall如果DLL中没有定义为__stdcall在调用时就不要用

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  • 原文地址:https://www.cnblogs.com/zheh/p/4943626.html
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