1.IDE：QTCreator

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2.实验：

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3.记录

 

 

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4.代码

#include "widget.h"
#include "ui_widget.h"
#include <QDateTime>
#include <QCalendar>
#include <QCalendarWidget>
Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
}

Widget::~Widget()
{
    delete ui;
}

void Widget::on_dial_valueChanged(int value)   //当旋钮改变值时
{
    ui->show_dialvalue->display(value);
}




void Widget::on_get_DateTime_pb_clicked()    //获取日期时间按钮按下时
{
    QDateTime datetime = QDateTime::currentDateTime();
    ui->time_hour->display(datetime.toString("hh"));
    ui->time_minu->display(datetime.toString("mm"));
    ui->time_seco->display(datetime.toString("ss"));

    ui->Datetime_tx->setText(datetime.toString("yyyy-MM-dd hh:mm:ss"));

    ui->timeEdit->setTime(datetime.time());
}


void Widget::on_calendarWidget_selectionChanged() //选中日期改变时
{
    QDate date= ui->calendarWidget->selectedDate();
    ui->calender_tx->setText(date.toString("yyyy年MM月dd日"));

}


void Widget::on_settime_pb_clicked()
{
    QString time_string= ui->settime_tx->text();
    QTime time= QTime::fromString(time_string,"hh:mm,ss");
    ui->timeEdit->setTime(time);
}