您可以使用dbus与定时守护程序进行交互/wiki/Software/systemd/timedated/
设置时间和日期。
Qt提供了一种从xml http://doc.qt.io/qt-5/qdbusxml2cpp.html生成接口代码的方法 。您可以通过内省获得xml。
我不喜欢生成的代码格式，所以我自己编写了接口代码
H：
#ifndef TIMEDATE1SERVICE_H
#define TIMEDATE1SERVICE_H
#include
#include
#include
#include
class Timedate1Interface: public QDBusAbstractInterface
{
Q_OBJECT
Q_PROPERTY(bool CanNTP READ CanNTP)
Q_PROPERTY(bool LocalRTC READ LocalRTC)
Q_PROPERTY(bool NTP READ NTP)
Q_PROPERTY(bool NTPSynchronized READ NTPSynchronized)
Q_PROPERTY(qulonglong RTCTimeUSec READ RTCTimeUSec)
Q_PROPERTY(qulonglong TimeUSec READ TimeUSec)
Q_PROPERTY(QString Timezone READ Timezone)
public:
explicit Timedate1Interface(QObject *parent = nullptr);
bool CanNTP() const;
bool LocalRTC() const;
bool NTP() const;
bool NTPSynchronized() const;
qulonglong RTCTimeUSec() const;
qulonglong TimeUSec() const;
QString Timezone() const;
void SetLocalRTC(bool localRTC, bool fixSystem, bool userInteraction);
void SetNTP(bool useNTP, bool userInteraction);
void SetTime(qlonglong usecUTC, bool relative, bool userInteraction);
void SetTimezone(const QString &timezone, bool userInteraction);
};
#endif // TIMEDATE1SERVICE_H
cpp：
#include "timedate1service.h"
Timedate1Interface::Timedate1Interface(QObject *parent)
: QDBusAbstractInterface("org.freedesktop.timedate1", "/org/freedesktop/timedate1",
"org.freedesktop.timedate1", QDBusConnection::systemBus(), parent)
{
}
bool Timedate1Interface::CanNTP() const
{
return qvariant_cast(property("CanNTP"));
}
bool Timedate1Interface::LocalRTC() const
{
return qvariant_cast(property("LocalRTC"));
}
bool Timedate1Interface::NTP() const
{
return qvariant_cast(property("NTP"));
}
bool Timedate1Interface::NTPSynchronized() const
{
return qvariant_cast(property("NTPSynchronized"));
}
qulonglong Timedate1Interface::RTCTimeUSec() const
{
return qvariant_cast(property("RTCTimeUSec"));
}
qulonglong Timedate1Interface::TimeUSec() const
{
return qvariant_cast(property("TimeUSec"));
}
QString Timedate1Interface::Timezone() const
{
return qvariant_cast(property("Timezone"));
}
void Timedate1Interface::SetLocalRTC(bool localRTC, bool fixSystem, bool userInteraction)
{
call("SetLocalRTC", localRTC, fixSystem, userInteraction);
}
void Timedate1Interface::SetNTP(bool useNTP, bool userInteraction)
{
call("SetNTP", useNTP, userInteraction);
}
void Timedate1Interface::SetTime(qlonglong usecUTC, bool relative, bool userInteraction)
{
call("SetTime", usecUTC, relative , userInteraction);
}
void Timedate1Interface::SetTimezone(const QString &timezone, bool userInteraction)
{
call("SetTimezone", timezone, userInteraction);
}
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