linux windows跨平台C++例子

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跨平台这里就定义了一个宏，如果该宏在windows上则定义，如果在linux上则不定义。

跨平台开发只需要改一个地方即可：将#define __Win32__ 1注释掉即表示在linux上开发，如果将其保留，则表示在windows上开发。

同时linux上需要多些一个makefile文件。

注意:linux下默认定义了宏__linux__

#pragma once#define __Win32__ 1#ifdef __Win32__#include "targetver.h"#include <stdio.h>#include <tchar.h>#include <iostream>using namespace std;#include <process.h>#include <Windows.h>#else#include <unistd.h>#include<pthread.h>#include <iostream>  using namespace std; #endif

#include "common.h"#include "OSThread.h"int main(int argc, char* argv[]){COSThread osThread;osThread.Start();cout << "press any key to exit\n" << endl;int n;cin >> n;return 0;}

#pragma once#include "common.h"class COSThread{public:COSThread(void);~COSThread(void);bool   Start();protected:#ifdef __Win32__static unsigned int __stdcall _Entry(void* inThread);#elif __linux__static void*    _Entry(void* inThread); #endifprivate:#ifdef __Win32__unsigned int          fThreadID;#elif __linux__pthread_t       fThreadID;#endif};

#include "OSThread.h"COSThread::COSThread(void){}COSThread::~COSThread(void){}bool COSThread::Start(){#ifdef __Win32__unsigned int theId = 0; // We don't care about the identifierfThreadID = _beginthreadex( NULL,   // Inherit security0,      // Inherit stack size_Entry, // Entry function(void*)this,    // Entry arg0,      // Begin executing immediately&theId );#elif __linux__ pthread_attr_t* theAttrP = NULL;int err = pthread_create((pthread_t*)&fThreadID, theAttrP, _Entry, (void*)this);#endifreturn true;}#ifdef __Win32__unsigned int __stdcall COSThread::_Entry( void* inThread ){int nCOunt = 0;while(true){cout << "value:" << nCOunt++ << endl;Sleep(1000);}}#endif#ifdef __linux__void* COSThread::_Entry( void* inThread ){int nCOunt = 0;while(true){cout << "value:" << nCOunt++ << endl;::usleep(1000 * 1000);}}#endif

main.out:g++ test123.cpp OSThread.cpp common.h -lpthread -o a.out

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