cocos2dx转换文字为utf-8

在cocos2dx中经常需要转换文字为utf-8

// 转成UTF-8inline const char* G2U(const char* str){#if (CC_TARGET_PLATFORM == CC_PLATFORM_WIN32)    int len = MultiByteToWideChar(CP_ACP,0,str,-1,NULL,0);    wchar_t* wstr = new wchar_t[len+1];    memset(wstr,0,len+1);    MultiByteToWideChar(CP_ACP,0,str,-1,wstr,len);    len = WideCharToMultiByte(CP_UTF8,0,wstr,-1,NULL,0,NULL,NULL);    char* temp = new char[len +1];    memset(temp,0,len+1);    WideCharToMultiByte(CP_UTF8,0,wstr,-1,temp,len,NULL,NULL);    if (wstr)    {        delete []wstr;    }    return temp;#else    return str;#endif}