DLL--显示链接调用符号表接口的非MFC动态链接库

最新推荐文章于 2024-01-01 19:03:53 发布

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最新推荐文章于 2024-01-01 19:03:53 发布

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分类专栏：经验帖 C/C++ Coperator 文章标签： DLL

本文链接：https://blog.youkuaiyun.com/coperator/article/details/18712365

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详细介绍如何在Visual Studio 2010中开发和调用DLL。DLL开发和调用分为多种，这里仅列举的是显示链接调用符号表接口的非MFC动态链接库。

生成DLL的代码

//-----------------------------------------------------------------------------   
// 作者：寇香龙   
// 日期：2014-01-23   
//   QQ: 643166601   
// 邮箱：643166601@qq.com   
// 说明：显示链接调用符号表接口的非MFC动态链接库，生成DLL程序
//-----------------------------------------------------------------------------

// dllmain.cpp : 定义 DLL 应用程序的入口点。
#include "stdafx.h"

#include <iostream>
using namespace std;

void MQ_Function()
{
	cout << "=================================================================" << endl;
	cout << "  CoperatorTestDLL"                                                << endl;
	cout << "                                                 --by Coperator"   << endl;
	cout << "=================================================================" << endl;
}

BOOL APIENTRY DllMain( HMODULE hModule,
                       DWORD  ul_reason_for_call,
                       LPVOID lpReserved
					 )
{
	switch (ul_reason_for_call)
	{
	case DLL_PROCESS_ATTACH:
	case DLL_THREAD_ATTACH:
	case DLL_THREAD_DETACH:
	case DLL_PROCESS_DETACH:
		break;
	}
	return TRUE;
}

调用DLL代码

//-----------------------------------------------------------------------------   
// 作者：寇香龙   
// 日期：2014-01-23  
//   QQ: 643166601   
// 邮箱：643166601@qq.com   
// 说明：显示链接调用符号表接口的非MFC动态链接库，调用DLL程序
//-----------------------------------------------------------------------------

#include <Windows.h> //LoadLibrary
#include <iostream>
using namespace std;

typedef void(*DLL_MQ_Function)();

int main()
{
	DLL_MQ_Function pDLL_MQ_Function_GetProcAddress;

	HMODULE hLoadLibrary;
	hLoadLibrary = LoadLibrary(TEXT("CoperatorTestDLL"));
	if(NULL != hLoadLibrary)
	{
		cout << "Step 1: LoadLibrary succeed!" << endl;
		pDLL_MQ_Function_GetProcAddress = (DLL_MQ_Function)GetProcAddress(hLoadLibrary, "MQ_Function");
		if(NULL != pDLL_MQ_Function_GetProcAddress)
		{
			cout << "Step 2: GetProcAddress succeed!" << endl;
			(pDLL_MQ_Function_GetProcAddress)();
		}
		else
		{
			cout << "Step 2: GetProcAddress fail!" << endl;
		}

		int nFreeLibrary = 0;
		nFreeLibrary = FreeLibrary(hLoadLibrary);
		if(0 < nFreeLibrary)
		{
			cout << "Step 3: FreeLibrary succeed!" << endl;
		}
		else
		{
			cout << "Step 3: FreeLibrary fail!" << endl;
		}

	}
	else
	{
		cout << "Step 1: LoadLibrary fail!" << endl;
	}

	getchar();
	return 0;
}

运行结果