QTday4

标签：Widget 定时器 pushButton ui ti include QTday4

思维导图

 第二题

 widget.h

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QTime>
#include <QTimerEvent>
#include <QTextToSpeech>

QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACE

class Widget : public QWidget
{
    Q_OBJECT

public:
    Widget(QWidget *parent = nullptr);
    ~Widget();
    void timerEvent(QTimerEvent *e);

private slots:
    void on_pushButton_clicked();

private:
    Ui::Widget *ui;
    int id;
    QString ti;
    int id2;
    QTextToSpeech *speecher;
};
#endif // WIDGET_H

 widget.cpp

#include "widget.h"
#include "ui_widget.h"

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
    , speecher(new QTextToSpeech(this))
{
    ui->setupUi(this);
    //启动一个定时器
    id = startTimer(1000);
}

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

//定时器超时时，自动执行的功能函数
void Widget::timerEvent(QTimerEvent *t)
{
    //判断哪个定时器超时
    if(t->timerId() == id)
    {
        //获取系统时间
        QTime tim = QTime::currentTime();
        //将时间转换成字符串
        ti = tim.toString("hh:mm:ss");
        //将系统时间放入lab中
        ui->label->setText(ti);
        //文本居中显示
        ui->label->setAlignment(Qt::AlignCenter);
    }
    else
    {
        //判断是否到定闹钟的时间
        if(ui->lineEdit->text() == ti)
        {
            for(int i=0;i<5;i++)
            {
                //读lab中内容
                speecher->say(ui->label_3->text());
            }
        }
    }
}

//启动按钮对应的槽函数
void Widget::on_pushButton_clicked()
{
    if(ui->pushButton->text() == "启动")
    {
        //启动一个定时器
        id2 = startTimer(1000);
        //将文本设置“关闭”
        ui->pushButton->setText("关闭");
    }
    else
    {
        //关闭定时器
        killTimer(id2);
        //将文本设置“启动”
        ui->pushButton->setText("启动");
    }
}

标签：Widget,定时器,pushButton,ui,ti,include,QTday4
From： https://blog.csdn.net/chenyangboVb/article/details/141368021