C++ Qt作业 day1

要求

3个按钮，一个按钮点击后就退出，
一个按钮点击后就播报退出按钮的名字，并无法再点击
一个按钮点击后就恢复播报按钮的功能

代码

homewok.pro 配置文件

QT       += core gui texttospeech

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += 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 6.0.0

SOURCES += \
    main.cpp \
    homework.cpp

HEADERS += \
    homework.h

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

homewok.h 头文件

#include 
#include "QDebug"
#include 

class HomeWork : public QWidget
{
    Q_OBJECT
signals:
public slots:
    void showMes();
    void open();

public:
    HomeWork(QWidget *parent = nullptr);
    ~HomeWork();
    QPushButton* btn1;
    QPushButton* btn2;
    QPushButton* btn3;

    //定义播报者
    QTextToSpeech speech;
};
#endif // HOMEWORK_H

homewok.cpp

 #include "homework.h"

void HomeWork::showMes()
{
    speech.say(btn3->text());
    btn2->setEnabled(false);
}

void HomeWork::open()
{
    speech.say(btn1->text());
    btn2->setEnabled(true);
}

HomeWork::HomeWork(QWidget *parent)
    : QWidget(parent)
{
    this->resize(1100,600);//重新设置主控件大小
    this->setMaximumSize(1600,1000);//设置最大尺寸
    this->setMinimumSize(500,400);//设置最小尺寸
    //this->setFixedSize(1100,600);//设置固定尺寸

    //设置窗口标题
    this->setWindowTitle("作业");

    //获取标题
    QString title=this->windowTitle();
    qDebug()<<"title："<<title;

    //设置背景颜色
    this->setBackgroundRole(QPalette::Dark);
    this->setAutoFillBackground(true);

    this->move(50,50);    //移动位置
    //输出坐标点
    qDebug()<<"x:"<<this->x()<<" y:"<<this->y();
    qDebug()<<this->pos();

    //输出宽度和高度
    qDebug()<<"width:"<<width()<<"  height:"<<height();



    //3个按钮
    btn1=new QPushButton(this);
    btn2=new QPushButton();
    btn2->setParent(this);
    btn3=new QPushButton(this);

    //btn1
    btn1->setText("恢复播报");
    btn1->resize(75,30);
    btn1->move(0,height()/2);
    connect(btn1,&QPushButton::clicked,this,&HomeWork::open);

    //btn2
    btn2->resize(75,30);
    btn2->setText("播报");
    btn2->move(width()/2,height()/2);

    connect(btn2,&QPushButton::clicked,this,&HomeWork::showMes);

    //btn3
    btn3->setText("退出");
    btn3->resize(75,30);
    btn3->move(width()-75,height()/2);
    connect(btn3,&QPushButton::clicked,[&](){
        this->close();
    });



}

HomeWork::~HomeWork()
{
}

main.cpp

#include "homework.h"

#include 

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    HomeWork w;
    w.show();
    return a.exec();
}