#include "mywidget.h"
#include "ui_mywidget.h"MyWidget::MyWidget(QWidget *parent): QWidget(parent), ui(new Ui::MyWidget)
{ui->setupUi(this);//居中ui->label02->setAlignment(Qt::AlignCenter);ui->Edit1->setAlignment(Qt::AlignCenter);id = startTimer(1000);
}QString time_str;void MyWidget::timerEvent(QTimerEvent *e)
{//显示系统时间QTime sys_time = QTime::currentTime();time_str = sys_time.toString("hh:mm:ss");ui->label02->setText(time_str);//获取输入的时间，和系统时间比较QString setTime = ui->Edit1->text();//时间到则语音播报label文本内容QTextToSpeech *tts = new QTextToSpeech(this);if(setTime == time_str){for(int i = 1; i <= 5; i++){tts->say(ui->label01->text());}ui->label01->setText("播报完毕，关闭闹钟");killTimer(id);}
}MyWidget::~MyWidget()
{delete ui;
}void MyWidget::on_Btn1_clicked()
{if(ui->Btn1->text()=="启动"){ui->Btn1->setText("关闭");ui->Edit1->setEnabled(false);ui->label01->setEnabled(false);}else{killTimer(id);ui->Btn1->setText("启动");ui->Edit1->setEnabled(true);ui->label01->setEnabled(true);}
}

运行结果：