闹钟

.h代码

#ifndef WIDGET_H
#define WIDGET_H#include <QWidget>
#include <QTimerEvent>
#include <QTime>
#include <QTextToSpeech>QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACEclass Widget : public QWidget
{Q_OBJECTpublic:Widget(QWidget *parent = nullptr);~Widget();void timerEvent(QTimerEvent *event) override;int t1;int t2;private slots:void on_pushButton_clicked();private:Ui::Widget *ui;QTextToSpeech *speech;
};
#endif // WIDGET_H

.cpp代码

#include "widget.h"
#include "ui_widget.h"Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{ui->setupUi(this);t1=startTimer(1000);speech = new QTextToSpeech(this);
}Widget::~Widget()
{delete ui;
}void Widget::timerEvent(QTimerEvent *e)
{if(e->timerId()==t1){QTime sys_time = QTime::currentTime();QString s=sys_time.toString("hh:mm:ss");ui->label->setText(s);}if(e->timerId()==t2){for (int i=0;i<5;i++){ui->label_3->setText("好好学习天天向上");speech->say(ui->label_3->text());}killTimer(t2);}
}void Widget::on_pushButton_clicked()
{QTime sys_time =QTime::currentTime();QTime alarm_time=ui->timeEdit->time();int current_s=sys_time.hour()*3600+sys_time.minute()*60+sys_time.second();int alarm_s=alarm_time.hour()*3600+alarm_time.minute()*60+alarm_time.second();t2=startTimer((alarm_s-current_s)*1000);
}

效果图