学步园

IKPerson.h

#ifndef _IKPERSON_H_<br /> #define _IKPERSON_H_<br /> #ifdef DLL_EXPORT<br /> #define DLL_API extern "C" __declspec(dllexport)<br /> #else<br /> #define DLL_API extern "C" __declspec(dllimport)<br /> #endif<br /> /*<br /> 设计这个接口类的作用：<br /> 能采用动态调用方式使用这个类<br /> */<br /> class IKPerson<br /> {<br /> public:<br /> virtual ~IKPerson(void) //对于基类，显示定义虚析构函数是个好习惯（注意，为什么请google）<br /> {<br /> }<br /> virtual int GetOld(void) const = 0;<br /> virtual void SetOld(int nOld) = 0;<br /> virtual const char* GetName(void) const = 0;<br /> virtual void SetName(const char* szName) = 0;<br /> };<br /> /* 导出函数声明 */<br /> DLL_API IKPerson* _cdecl GetIKPerson(void);<br /> typedef IKPerson* (__cdecl *PFNGetIKPerson)(void);<br /> #endif

KChinese.h

#pragma once<br /> #define DLL_EXPORT<br /> #include "ikperson.h"<br /> class CKChinese :<br /> public IKPerson<br /> {<br /> public:<br /> CKChinese(void);<br /> ~CKChinese(void);<br /> virtual int GetOld(void) const;<br /> virtual void SetOld(int nOld);<br /> virtual const char* GetName(void) const;<br /> virtual void SetName(const char* szName);<br /> private:<br /> int m_nOld;<br /> char m_szName[64];<br /> };<br />

KChinese.cpp

#include "StdAfx.h"<br /> #include "KChinese.h"<br /> CKChinese::CKChinese(void) : m_nOld(0)<br /> {<br /> memset(m_szName, 0, 64);<br /> }<br /> CKChinese::~CKChinese(void)<br /> {<br /> }<br /> int CKChinese::GetOld(void) const<br /> {<br /> return m_nOld;<br /> }<br /> void CKChinese::SetOld(int nOld)<br /> {<br /> this->m_nOld = nOld;<br /> }<br /> const char* CKChinese::GetName(void) const<br /> {<br /> return m_szName;<br /> }<br /> void CKChinese::SetName(const char* szName)<br /> {<br /> strncpy(m_szName, szName, 64);<br /> }<br /> /* 导出函数定义 */<br /> IKPerson* __cdecl GetIKPerson(void)<br /> {<br /> IKPerson* pIKPerson = new CKChinese();<br /> return pIKPerson;<br /> }

调用代码

callclassExportDll.cpp

// callclassExportDll.cpp : Defines the entry point for the console application.<br /> //<br /> #include "stdafx.h"<br /> #include <iostream><br /> using namespace std;<br /> #include "../../classExportDll/classExportDll/IKPerson.h"<br /> int _tmain(int argc, _TCHAR* argv[])<br /> {<br /> HMODULE hDll = ::LoadLibrary(_T("classExportDll.dll"));<br /> if (NULL != hDll)<br /> {<br /> PFNGetIKPerson pFun = (PFNGetIKPerson)::GetProcAddress(hDll, "GetIKPerson");<br /> if (NULL != pFun)<br /> {<br /> IKPerson* pIKPerson = (*pFun)();<br /> if (NULL != pIKPerson)<br /> {<br /> pIKPerson->SetOld(103);<br /> pIKPerson->SetName("liyong");<br /> cout << pIKPerson->GetOld() << endl;<br /> cout << pIKPerson->GetName() << endl;<br /> delete pIKPerson;<br /> }<br /> }<br /> ::FreeLibrary(hDll);<br /> }<br /> return 0;<br /> }<br />