#include "widget.h"
#include "ui_widget.h"Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{ui->setupUi(this);speecher = new QTextToSpeech(this);
}Widget::~Widget()
{delete ui;
}//定时器超时时，自动执行的功能代码
void Widget::timerEvent(QTimerEvent *e)
{//判断哪个定时器超时if(e->timerId() == id){//获取系统时间QTime sys_time = QTime::currentTime();//将时间转换成QStringQString s =sys_time.toString("hh:mm:ss");//将获取的系统时间放入到label中ui->xianshi_lab->setText(s);//居中显示ui->xianshi_lab->setAlignment(Qt::AlignCenter);}else if(e->timerId() == id2){//判断时间和显示时间是否一致if(ui->lineEdit->text() == ui->xianshi_lab->text()){int i = 5;while(i--){speecher->say(ui->xuexi_lab->text());}}}}//按钮对应的槽函数处理
void Widget::on_pushButton_clicked()
{if(ui->pushButton->text() == "启动"){//启动一个定时器id = startTimer(1000);//启动第二个定时器id2 = startTimer(1000);//将按钮文本设置为“关闭”ui->pushButton->setText("关闭");}else{ui->pushButton->setText("启动");}
}

头文件

#ifndef WIDGET_H
#define WIDGET_H#include <QWidget>
#include <QTimerEvent>
#include <QTime>
#include <QtTextToSpeech>QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACEclass Widget : public QWidget
{Q_OBJECTpublic:Widget(QWidget *parent = nullptr);~Widget();void timerEvent(QTimerEvent *e);private slots:void on_pushButton_clicked();private:Ui::Widget *ui;//定义一个定时器int id;int id2;//定义一个语音播报者QTextToSpeech *speecher;
};
#endif // WIDGET_H

运行结构：

思维导图：