c++ - Qt 秒到 DD HH SS

Question

如何使用 Qt 4.8 以 DD HH SS 格式打印时间？我有秒数，我想取回该格式的字符串。

Answer 1

QDateTime::fromTime_t(seconds).toString("ss hh DD");

参见 http://qt-project.org/doc/qt-5.0/qdatetime.html#toString

如果你想要一个持续时间(你的问题真的不清楚)尝试类似的东西:

QString seconds_to_DHMS(quint32 duration)
{
  QString res;
  int seconds = (int) (duration % 60);
  duration /= 60;
  int minutes = (int) (duration % 60);
  duration /= 60;
  int hours = (int) (duration % 24);
  int days = (int) (duration / 24);
  if((hours == 0)&&(days == 0))
      return res.sprintf("%02d:%02d", minutes, seconds);
  if (days == 0)
      return res.sprintf("%02d:%02d:%02d", hours, minutes, seconds);
  return res.sprintf("%dd%02d:%02d:%02d", days, hours, minutes, seconds);
}