linux windows跨平台C++例子

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 
#include 
#include 
using namespace std;
#include 
#include 
#else

#include 
#include
#include   
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);

 #endif


private:

#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 identifier
	fThreadID = _beginthreadex( NULL,   // Inherit security
		0,      // Inherit stack size
		_Entry, // Entry function
		(void*)this,    // Entry arg
		0,      // Begin executing immediately
		&theId );
#elif __linux__
	 pthread_attr_t* theAttrP = NULL;
	int err = pthread_create((pthread_t*)&fThreadID, theAttrP, _Entry, (void*)this);
#endif
	return 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