未启动:

启动：

 

 

 .cpp

#include "widget.h"
#include "ui_widget.h"

void Widget::btn1_slots()
{
    //点击启动开始定时
    event_timer = this->startTimer(1000);
    btn1->setEnabled(false);
    btn2->setEnabled(true);
    edit2->setEnabled(false);
    txtEit->setEnabled(false);
}

void Widget::btn2_slots()
{
    this->killTimer(event_timer);
    btn1->setEnabled(true);
    btn2->setEnabled(false);
    edit2->setEnabled(true);
    txtEit->setEnabled(true);
}

void Widget::btn3_slots()
{
    this->close();
}

Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
    ui->setupUi(this);

    lab1 = new QLabel("背景",this);
    movie = new QMovie(":/Logo/nan.gif");
    lab1->setMovie(movie);
    movie->start();
    lab1->adjustSize();

    //当前系统时间框位置
    edit1 = new QLineEdit("当前时间",this);
    edit1->resize(230,45);
    edit1->move(420,165);
    edit1->setFont(QFont("微软雅黑",12));
    edit1->setStyleSheet("border:none;border-bottom:1px solid black;background:transparent");
    edit1->setEnabled(false);

    //用户手动输入时间
    edit2 = new QLineEdit("定闹钟啦",this);
    edit2->resize(160,35);
    edit2->move(420,300);
    edit2->setFont(QFont("微软雅黑",10));
    edit2->setStyleSheet("border:none;border-bottom:1px solid black;background:transparent");

    //文本编辑框
    txtEit = new QTextEdit("输入闹钟文本",this);
    txtEit->resize(230,280);
    txtEit->move(90,250);
    txtEit->setFont(QFont("微软雅黑",16));
    txtEit->setStyleSheet("border:none;border-top:1px solid black;border-bottom:1px solid black;background:transparent");

    //启动按钮
    btn1 = new QPushButton(QIcon(""),"启动",this);
    btn1->resize(120,60);
    btn1->move(380,350);
    btn1->setFont(QFont("微软雅黑",15));
    btn1->setStyleSheet("border-radius:10");
    connect(btn1,&QPushButton::clicked,this,&Widget::btn1_slots);

    //停止按钮
    btn2 = new QPushButton(QIcon(""),"停止",this);
    btn2->resize(120,60);
    btn2->move(490,350);
    btn2->setFont(QFont("微软雅黑",15));
    btn2->setStyleSheet("border-radius:10");
    //设置初始不可以使用
    btn2->setEnabled(false);
    connect(btn2,&QPushButton::clicked,this,&Widget::btn2_slots);

    //关闭按钮
    btn3 = new QPushButton(QIcon(":/Logo/quxiao.png"),"关闭",this);
    btn3->resize(70,50);
    btn3->move(500,60);
    btn3->setFont(QFont("微软雅黑",10));
    btn3->setStyleSheet("border-radius:10");
    connect(btn3,&QPushButton::clicked,this,&Widget::btn3_slots);
    //speecher.say(this->txtEit->toPlainText());

}
Widget::~Widget()
{
    delete ui;
}

void Widget::mousePressEvent(QMouseEvent *event)
{
    //获取当前的vector位置
    vector = event->globalPos() - this->frameGeometry().topLeft();
             //光标的全局坐标        //当前界面的几何图形的左上角的坐标
}

void Widget::mouseMoveEvent(QMouseEvent *event)
{
    //将lab标签，跟随鼠标一起移动
    this->move(event->globalPos()-vector);
}

void Widget::timerEvent(QTimerEvent *e)
{
    if(e->timerId() == event_timer)
    {
        this->edit1->setAlignment(Qt::AlignHCenter | Qt::AlignHCenter);
        //获取系统时间
        QDateTime sys_dt = QDateTime::currentDateTime();
        //把时间转换为字符串并写在edit2上
        this->edit1->setText(sys_dt.toString("HH:mm:ss"));
    }
    if(edit2->text() == edit1->text())
    {
        speecher.say(this->txtEit->toPlainText());
        QMessageBox::information(this,"提示","闹钟开始");
    }
}

.h

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QWidget>
#include <QDebug>
#include <QIcon>//图标头文件
#include <QPushButton>
#include <QLabel> //标签类头文件
#include <QLineEdit>
#include <cstring>
#include <QTextToSpeech>
#include <QMovie>
#include <QMessageBox>
#include <QTextEdit>
#include <QMouseEvent>
#include <QDateTime>//定义日期时间类

namespace Ui {
class Widget;
}

class Widget : public QWidget
{
    Q_OBJECT
private slots:
    void btn1_slots();
    void btn2_slots();
    void btn3_slots();

public:
    explicit Widget(QWidget *parent = nullptr);
    ~Widget();

    void mousePressEvent(QMouseEvent *event) override;
    void mouseMoveEvent(QMouseEvent *event) override;

    //重写定时器事件处理函数
    void timerEvent(QTimerEvent *e);

private:
    Ui::Widget *ui;

    //定义一个定时器id，int类型
    int event_timer;

    QLabel *lab1;
    QLineEdit *edit1;   //当前时间
    QLineEdit *edit2;   //用户所定时间

    QMovie *movie;
    QPoint vector;//鼠标组件向量
    QTextToSpeech speecher;//播报

    QPushButton *btn1;
    QPushButton *btn2;
    QPushButton *btn3;
    QTextEdit *txtEit;
};

#endif // WIDGET_H