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widget.h头文件

#ifndef WIDGET_H
#define WIDGET_H#include <QWidget>
#include <QTime>
#include <QTimer>
#include <QTimerEvent>
#include <QTextToSpeech>QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACEclass Widget : public QWidget
{Q_OBJECTpublic:Widget(QWidget *parent = nullptr);~Widget();int tid = 0;//定义计时器idQTextToSpeech *speaker;//声明语音播报类名private slots:void on_start_clicked();void timerEvent(QTimerEvent *event) override; //重写时间事件处理函数void on_end_clicked();private:Ui::Widget *ui;
};
#endif // WIDGET_H

widget.cpp源文件

#include "widget.h"
#include "ui_widget.h"Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{ui->setupUi(this);speaker = new QTextToSpeech(this);
}Widget::~Widget()
{delete ui;
}void Widget::on_start_clicked()
{tid = this->startTimer(1000);//启动定时器
}
void Widget::on_end_clicked()
{this->killTimer(tid);//关闭定时器
}void Widget::timerEvent(QTimerEvent *event)
{if(event->timerId()==tid){QDateTime systime = QDateTime::currentDateTime();//获取系统时间QString rel_time = systime.toString("yyyy/M/d h:mm:ss"); //将时间转换为字符串类型ui->lab->setText(rel_time);//展示时间if(rel_time == ui->tm->text()){speaker->say(ui->txt->toPlainText());qDebug("123");}}
}