C++&QT—QT-day3

#include "widget.h"#include "ui_widget.h"//需要在.pro文件第一行加 texttospeechWidget::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_NAMESPACEnamespace Ui { class Widget; }QT_END_NAMESPACEclass Widget : public QWidget{Q_OBJECTpublic: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