要求：
结果图：
clock.pro:
QT += core gui
QT += texttospeechgreaterThan(QT_MAJOR_VERSION, 4): QT += widgetsCONFIG += c++11# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0SOURCES += \main.cpp \widget.cppHEADERS += \widget.hFORMS += \widget.ui# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target
widget.h:
#ifndef WIDGET_H
#define WIDGET_H#include <QWidget>
#include <QTimerEvent> //定时器事件处理函数
#include <QTime> //时间类
#include <QPushButton> //按钮类头文件
#include <QTextToSpeech> //文本转语音类头文件QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACEclass Widget : public QWidget
{Q_OBJECTpublic:Widget(QWidget *parent = nullptr);~Widget();void timerEvent(QTimerEvent *e); //要重写的关于定时器事件处理函数的声明private slots:void on_start_Btn_clicked();void on_stop_Btn_clicked();private:Ui::Widget *ui;static int count; //定义静态变量QTextToSpeech *speecher; //定义一个播报者//定义一个基于事件处理的定时器idint tid1;int tid2;
};
#endif // WIDGET_Hwidget.cpp:
#include "widget.h"
#include "ui_widget.h"Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{ui->setupUi(this);tid1 = startTimer(1000); //启动一个定时器，隔1s会自动执行timerevent函数//设置占位符ui->clock_lineEdit->setPlaceholderText("输入多少秒后开启闹铃");speecher = new QTextToSpeech(this);
}int Widget::count = 0;Widget::~Widget()
{delete ui;
}void Widget::timerEvent(QTimerEvent *event)
{if(event->timerId() == tid1){//获取系统事件QTime sys_time = QTime::currentTime(); //QTime类对象//将时间转化为字符串QString t = sys_time.toString("hh:mm:ss");//将字符串展示到ui界面ui->time_lab->setText(t);ui->time_lab->setAlignment(Qt::AlignHCenter);}else if(event->timerId() == tid2){count++;//将clock_lineEdit 的文本转化为整数int m = ui->clock_lineEdit->text().toInt();if(count == m){//进行语音播报speecher->say(ui->read_textEdit->toPlainText());//停止计时器killTimer(tid2);}}}void Widget::on_start_Btn_clicked()
{//将start_Btn设置成不可用状态ui->start_Btn->setEnabled(false);//将clock_lineEdit设置成不可用状态ui->clock_lineEdit->setEnabled(false);//将stop_Btn设置成可用状态ui->stop_Btn->setEnabled(true);//启动第二个计时器tid2 = startTimer(1000); //启动一个定时器，隔1s会自动执行timerevent函数//将count置零count = 0;}void Widget::on_stop_Btn_clicked()
{//停止语音播报speecher->stop();//将stop_Btn设置成不可用状态ui->stop_Btn->setEnabled(false);//将start_Btn设置成可用状态ui->start_Btn->setEnabled(true);ui->clock_lineEdit->setEnabled(true);//停止计时器killTimer(tid2);//将count置零count = 0;
}widget.ui:
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0"><class>Widget</class><widget class="QWidget" name="Widget"><property name="geometry"><rect><x>0</x><y>0</y><width>800</width><height>613</height></rect></property><property name="windowTitle"><string>Widget</string></property><widget class="QLabel" name="time_lab"><property name="geometry"><rect><x>50</x><y>60</y><width>321</width><height>161</height></rect></property><property name="font"><font><pointsize>22</pointsize><weight>75</weight><italic>false</italic><bold>true</bold><underline>true</underline></font></property><property name="styleSheet"><string notr="true">background-color: rgb(85, 255, 255);</string></property><property name="text"><string/></property></widget><widget class="QLineEdit" name="clock_lineEdit"><property name="geometry"><rect><x>430</x><y>60</y><width>291</width><height>71</height></rect></property><property name="styleSheet"><string notr="true">background-color: rgb(255, 255, 0);</string></property></widget><widget class="QPushButton" name="start_Btn"><property name="geometry"><rect><x>430</x><y>160</y><width>121</width><height>61</height></rect></property><property name="text"><string>开始</string></property></widget><widget class="QPushButton" name="stop_Btn"><property name="geometry"><rect><x>590</x><y>160</y><width>121</width><height>61</height></rect></property><property name="text"><string>停止</string></property></widget><widget class="QTextEdit" name="read_textEdit"><property name="geometry"><rect><x>50</x><y>250</y><width>671</width><height>341</height></rect></property><property name="html"><string><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd">
<html><head><meta name="qrichtext" content="1" /><style type="text/css">
p, li { white-space: pre-wrap; }
</style></head><body style=" font-family:'SimSun'; font-size:9pt; font-weight:400; font-style:normal;">
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-size:18pt; color:#55ffff;">故人西辞黄鹤楼，唱跳Rap打篮球。春风又绿江南岸，练习长达两年半。清明时节雨坤坤，路上行人梳中分，借问背带何处有，牧童遥指我爱坤。长江后浪推前浪，爱坤啥样我啥样。鸡冠头背带裤，我是爱坤你记住。向阳花木易为春，听说你爱蔡徐坤。小黑子树枝666，蒸虾头，好丸吗？树枝赶人，蒸五鱼，食不食油饼，我家鸽鸽在胎上拿姜拿到手软，他那么努力，这样叫我怎么荔枝？已经橘爆你了，再这样我就抱紧了，劝你苏珊，不然我们爱坤就紫砂了。</span></p></body></html></string></property></widget></widget><resources/><connections/>
</ui>
思维导图：
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