QT【day3】

思维导图：

闹钟：

//widget.h
#ifndef WIDGET_H
#define WIDGET_H#include <QWidget>
#include<QTimerEvent>
#include<QTimer>
#include<QTime>   //时间类
#include<QPushButton> //按钮类头文件
#include<QDebug>  //信息调试类，用于打印输出
#include<QTextBrowser>
#include<QMessageBox>
#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 *e);private slots:void on_activateBtn_clicked();void on_stopBtn_clicked();void my_slot();void on_timeLab_linkActivated(const QString &link);private:Ui::Widget *ui;int tId;QPushButton *activateBtn;QTextToSpeech *speecher;};
#endif // WIDGET_H

//widget.cpp
#include "widget.h"
#include "ui_widget.h"Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{ui->setupUi(this);tId = startTimer(1000);//实例化一个语言播报员speecher = new QTextToSpeech(this);
}Widget::~Widget()
{delete ui;
}//定时器处理函数
void Widget::timerEvent(QTimerEvent *e)
{//判断是那个定时器到位if(e->timerId() == tId){//获取系统时间QTime sys_time = QTime::currentTime();//将时间转化为字符串QString t = sys_time.toString("hh-mm-ss");ui->timeLab->setText(t);ui->timeLab->setAlignment(Qt::AlignCenter);}
}//启动按钮对应的槽函数
void Widget::on_activateBtn_clicked()
{while(1){if(ui->timeLab->text() == ui->lineEdit->text()){int i = 0;while(i < 5){speecher->say(ui->txtLab->toPlainText());i++;}break;}}}//停止按钮对应的槽函数
void Widget::on_stopBtn_clicked()
{my_slot();
}//自定义槽函数
void Widget::my_slot()
{int ret = QMessageBox::information(this,"提示","您是否确定停止？",QMessageBox::Yes | QMessageBox::No,QMessageBox::No);if(ret == QMessageBox::Yes){ui->activateBtn->setEnabled(false);ui->txtLab->setEnabled(false);ui->timeLab->setEnabled(false);}else{ui->activateBtn->setEnabled(true);ui->txtLab->setEnabled(true);ui->timeLab->setEnabled(true);}
}