Platform-independent GUID generation in C++?

Question

What is the best way to programmatically generate a GUID or UUID in C++ without relying on a platform-specific tool? I am trying to make unique identifiers for objects in a

Answer 1

on linux: man uuid

on win: check out for UUID structure and UuidCreate function in msdn

[edit] the function would appear like this

extern "C"
{
#ifdef WIN32
#include 
#else
#include 
#endif
}

std::string newUUID()
{
#ifdef WIN32
    UUID uuid;
    UuidCreate ( &uuid );

    unsigned char * str;
    UuidToStringA ( &uuid, &str );

    std::string s( ( char* ) str );

    RpcStringFreeA ( &str );
#else
    uuid_t uuid;
    uuid_generate_random ( uuid );
    char s[37];
    uuid_unparse ( uuid, s );
#endif
    return s;
}