Qtday3作业

作业 

 头文件

#ifndef WIDGET_H
#define WIDGET_H#include <QPushButton>
#include <QTextToSpeech>
#include <QWidget>
#include <QDebug>
#include <QTimer>   //定时器类
#include <QTime>    //时间类
#include <QTimerEvent>   //定时器事件类
#include <QDateTime>     //日期时间类
#include <QTextEdit>#include <QString>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_start_btn_clicked();void on_stop_btn_clicked();private:Ui::Widget *ui;int tId;  // 闹钟定时器QTextToSpeech *Text_Speech; // 语音播报者};
#endif // WIDGET_H

源文件 

#include "widget.h"#include <QApplication>int main(int argc, char *argv[])
{QApplication a(argc, argv);Widget w;w.show();return a.exec();
}

#include "widget.h"
#include "ui_widget.h"Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{tId = startTimer(1000);   // 启动定时器ui->setupUi(this);//改变窗口标题this->setWindowTitle("闹钟");Text_Speech =new QTextToSpeech(this);}Widget::~Widget()
{delete ui;
}
void Widget::timerEvent(QTimerEvent *e)
{if(e->timerId() == tId){//获取系统时间QTime sys_time = QTime ::currentTime();//将时间转化成字符串QString t = sys_time.toString("hh:mm:ss");//将字符串展示到ui界面ui->time_lab->setText(t);ui->time_lab->setAlignment(Qt::AlignCenter);if (ui->time_lab->text() == ui->clockEdit->toPlainText()){Text_Speech->say(ui->speechEdit->toPlainText());}}}void Widget::on_start_btn_clicked()
{//在按下启动按钮后启动按钮为不可用状态ui->start_btn->setEnabled(false);ui->speechEdit->setEnabled(false);ui->clockEdit->setEnabled(false);}void Widget::on_stop_btn_clicked()
{//在按下停止按钮后启动按钮为可用状态ui->start_btn->setEnabled(true);ui->speechEdit->setEnabled(true);ui->clockEdit->setEnabled(true);}