获取系统时间

//while(1) 放在主函数里不能实时更新shijain/*void BV::nowtime(){while (1){ui.setupUi(this);tm *year; //年tm *month; //月tm *day; //日tm *hour;//时tm *minute;tm *second;time_t t;t = time(0);year = localtime(&t);month = localtime(&t);day = localtime(&t);hour = localtime(&t);minute = localtime(&t);QString year1 = QString::number((year->tm_year + 1900), 10);QString month1 = QString::number((year->tm_mon + 1), 10);QString day1 = QString::number((year->tm_mday), 10);QString hour1 = QString::number((year->tm_hour), 10);QString minute1 = QString::number((year->tm_min), 10);QString sec1 = QString::number((year->tm_sec), 10);ui.label_year->setText(year1);ui.label_month->setText(month1);ui.label_day->setText(day1);ui.label_hour->setText(hour1);ui.label_minute->setText(minute1);ui.label_second->setText(sec1);}}*/