C++&QT---QT-day3

#include "widget.h"
#include "ui_widget.h"
//需要在.pro文件第一行加 texttospeech
 
Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
    ui->lineEdit->setPlaceholderText("时:分:秒");//设定框占位字符
    //ui->textEdit->setText("春眠不觉晓");
    ui->lineEdit->setAlignment(Qt::AlignCenter);//居中显示
    ui->textEdit->setAlignment(Qt::AlignCenter);
    speecher=new QTextToSpeech(this);//给播报员分配空间
}
 
Widget::~Widget()
{
    delete ui;
}
 
void Widget:: timerEvent(QTimerEvent *e)
{
    if(e->timerId() == tId)
    {
        QTime sys_time = QTime::currentTime(); //获取当前系统时间
        QString s = sys_time.toString("hh:mm:ss");//把系统时间转换成字符串
        ui->lab_time->setText(s);//将系统时间放入标签中
        ui->lab_time->setAlignment(Qt::AlignCenter);//居中显示
        if(s == ui->lineEdit->text())//判断设定时间与系统时间是否匹配
        {
            speecher->say(ui->textEdit->toPlainText());
        }
    }
}
 
void Widget::on_startBtn_clicked()//定时器启动事件
{
    tId=startTimer(1000);
}
 
void Widget::on_stopBtn_clicked()//定时器关闭事件
{
    this->killTimer(tId);
}

#ifndef WIDGET_H
#define WIDGET_H
 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
 
QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACE
 
class Widget : public QWidget
{
    Q_OBJECT
 
public:
    Widget(QWidget *parent = nullptr);
    ~Widget();
    void timerEvent(QTimerEvent *e);
 
private slots:
    void on_startBtn_clicked();
 
    void on_stopBtn_clicked();
 
private:
    Ui::Widget *ui;
    int tId;
    QTextToSpeech *speecher;
};
#endif // WIDGET_H