实现闹钟

weiget.h
#ifndef WIDGET_H
#define WIDGET_H#include <QWidget>
#include<QTimer>
#include<QTime>
#include<QTimerEvent>
#include<QString>
#include<QtTextToSpeech>
QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACEclass Widget : public QWidget
{Q_OBJECTpublic:Widget(QWidget *parent = nullptr);~Widget();private slots:void on_Start_Button_clicked();//启动对应的槽函数
public slots:void  showTime();//显示系统时间对应的槽函数private:Ui::Widget *ui;QTimer *timer;//定时器QTextToSpeech *qtspeetch;//实例化语音播报
};
#endif // WIDGET_Hwidget.cpp
#include "widget.h"
#include "ui_widget.h"Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget),timer(new QTimer)//给timer实例化空间,qtspeetch(new QTextToSpeech(this))//给播报实例化空间
{ui->setupUi(this);connect(timer,&QTimer::timeout,this,&Widget::showTime);//将定时器和界面进行连接timer->start(1000);//超时}Widget::~Widget()
{delete ui;
}//点击启动按钮，开始判断是否到达闹钟时间
void Widget::on_Start_Button_clicked()//闹钟启动
{QString alarm=ui->lineEdit->text();if(ui->Show_Timelabel->text()>=alarm)//判断当前系统时间是否大于或者等于闹钟时间{qtspeetch->say(ui->Speak_label->text());//播放内容}}
//标签中显示系统时间
void Widget::showTime()
{QTime sys_time=QTime::currentTime();//获取当前的时间QString s=sys_time.toString("hh:mm:ss");//将时间转换为字符串ui->Show_Timelabel->setText(s);//将时间显示在标签中}