跨平台生成GUID/UUID

#ifndef XGUID_H

#define XGUID_H

#include <string>

#include <stdio.h>

#ifdef WIN32

#include <objbase.h>

#else

#include <uuid/uuid.h>

typedef struct _GUID

{

unsigned long Data1;

unsigned short Data2;

unsigned short Data3;

unsigned char Data4[8];

} GUID, UUID;

#endif

namespace XGUID

{

GUID CreateGuid()

{

GUID guid;

#ifdef WIN32

CoCreateGuid(&guid);

#else

uuid_generate(reinterpret_cast<unsigned char *>(&guid));

#endif

return guid;

}

std::string GuidToString(const GUID &guid)

{

char buf[64] = {0};

#ifdef __GNUC__

snprintf(

#else // MSVC

_snprintf_s(

#endif

buf,

sizeof(buf),

"{%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X}",

guid.Data1, guid.Data2, guid.Data3,

guid.Data4[0], guid.Data4[1],

guid.Data4[2], guid.Data4[3],

guid.Data4[4], guid.Data4[5],

guid.Data4[6], guid.Data4[7]);

return std::string(buf);

}

std::string CreateGuidString()

{

return GuidToString(CreateGuid());

}

}//namespace

#endif // XGUID_H

eg:

QString str1(XGUID::CreateGuidString().c_str());