对话框资源

优化登录框：

当用户点击取消按钮，弹出问题对话框，询问是否要确定退出登录，并提供两个按钮，yes|No，如果用户点击的Yes，则关闭对话框，如果用户点击的No，则继续登录

当用户点击的登录按钮，进行账号和密码的匹配，如果匹配成功，则弹出信息对话框，给出信息为，登录成功，并给出一个确定按钮，当用户点击该按钮后，关闭登录界面，弹出另一个界面

当账号和密码不匹配是，给出错误对话框，给出信息为账号和密码不匹配，是否重新登录，并提供两个按钮 Yes|No,如果用户点击了Yes，则清空密码框后，继续登录。如果用户点击的取消，则关闭登录界面

要求：静态成员函数版本和对象版本各至少实现一个

头文件：lili.h

#ifndef LILI_H
#define LILI_H

#include <QWidget>

namespace Ui {
class lili;
}

class lili : public QWidget
{
    Q_OBJECT

public:
    explicit lili(QWidget *parent = nullptr);
    ~lili();
public slots:
    void jump_slot()
    {
        this->show();
    }

private:
    Ui::lili *ui;
};

#endif // LILI_H

头文件：widget.h

#ifndef WIDGET_H
#define WIDGET_H
#include<QLineEdit>
#include <QWidget>
#include<QPushButton>

QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACE

class Widget : public QWidget
{
    Q_OBJECT

public:
    Widget(QWidget *parent = nullptr);
    ~Widget();
signals:
    void jump();
private slots:
    void my_slot();
    void my_slot1();

private:
    Ui::Widget *ui;
    QLineEdit *edit1;
    QLineEdit *edit2;
    QPushButton *btn1;
    QPushButton *btn2;

};
#endif // WIDGET_H

源文件：lili.cpp

#include "lili.h"
#include "ui_lili.h"

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

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

源文件：main.cpp

#include "widget.h"
#include "lili.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    w.show();
    lili l;
    QObject::connect(&w,&Widget::jump,&l,&lili::jump_slot);
    return a.exec();
}

源文件：widget.cpp

#include "widget.h"
#include "ui_widget.h"
#include<QDebug>
#include<QIcon>
#include<QPushButton>
#include<QLineEdit>
#include<QLabel>
#include <QMessageBox>

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
    this->setWindowTitle("lili's window");
    this->setWindowIcon(QIcon(":/tp/f54cccba4ab9b9122909fb0e0a4f3d3.jpg"));
    this->setMaximumSize(800,600);
    this->setMinimumSize(400,300);
    this->setFixedSize(500,400);
    //this->resize(800,600);
    //this->set(QIcon("D:/BaiduNetdiskDownload/qt/yingyong/7adcf1a6baf7073e8434ae912bbb52a.png"));
    this->setWindowOpacity(0.9);
    this->move(400,300);
    //QPainter a(this);
    //a.drawPixmap(rect(),QPixmap("D:/BaiduNetdiskDownload/qt/yingyong/7adcf1a6baf7073e8434ae912bbb52a.png"),QRect());

    QLabel *lab3=new QLabel(this);
    lab3->resize(500,500);
    lab3->setStyleSheet("background:skyblue;");
    //QMovie *movie=new QMovie("");
    //lab3->setScaledContents(true);
    //lab3->setPixmap(QPixmap("D:/BaiduNetdiskDownload/qt/yingyong/218f6c69c7208efb13d66d558999dec.jpg"));
    lab3->setPixmap(QPixmap(":/tp/1111.png"));
    lab3->setScaledContents(true);




    btn1=new QPushButton(QIcon(":/tp/12067205a1d2c773274d113ab9594f8.jpg"),"登录",this);
    btn1->resize(60,30);
    btn1->move(150,300);
    btn1->setStyleSheet("color:white;background:pink;border-radius:10px;");

    btn2=new QPushButton("注册",this);
    btn2->resize(btn1->size());
    btn2->move(btn1->x()+btn1->width()+70,btn1->y());
    btn2->setStyleSheet("color:white;background:pink;border-radius:10px;");
    btn2->setIcon(QIcon(":/tp/1359e195af6400e83b7490ddae6808f.jpg"));


    QLabel *lab1=new QLabel("账号：",this);
    lab1->resize(50,30);
    lab1->move(btn1->x()-60,btn1->y()-90);
    lab1->setStyleSheet("color:black;");



    QLabel *lab2=new QLabel("密码：",this);
    lab2->resize(50,30);
    lab2->move(btn1->x()-60,lab1->y()+40);
    lab2->setStyleSheet("color:black;");


    edit1=new QLineEdit(this);
    edit1->resize(250,30);
    edit1->move(lab1->x()+lab1->width()+10,lab1->y());
    edit1->clear();
    edit1->setStyleSheet("color:pink");
    edit1->setAlignment(Qt::AlignCenter);
    edit1->setPlaceholderText("请输入账号");

    edit2=new QLineEdit("密码",this);
    edit2->resize(250,30);
    edit2->move(edit1->x(),edit1->y()+40);
    edit2->clear();
    edit2->setStyleSheet("color:pink");
    edit2->setAlignment(Qt::AlignCenter);
    edit2->setPlaceholderText("请输入密码");
    edit2->setEchoMode(QLineEdit::Password);

    //connect(btn2,SIGNAL(clicked()),this,SLOT(close()));
    connect(btn1,&QPushButton::clicked,this,&Widget::my_slot);
    connect(btn2,&QPushButton::clicked,this,&Widget::my_slot1);
}
void Widget::my_slot()
{
    QString username =edit1->text();
    QString password =edit2->text();
    if(username==password)
    {
        QMessageBox box(QMessageBox::Information,
                        "信息",
                        "登陆成功",
                        QMessageBox::Ok,
                        this);
        box.setButtonText(QMessageBox::Ok,"确定");
        box.setDefaultButton(QMessageBox::Ok);
        int btn=box.exec();
        if(btn==QMessageBox::Ok)
        {
            this->close();
            emit jump();
        }
    }else{
        int btn1=QMessageBox::warning(this,
                                      "错误",
                                      "账号和密码不相等，是否重新登陆",
                                      QMessageBox::Yes|QMessageBox::No,
                                      QMessageBox::Yes);
        if(btn1==QMessageBox::Yes)
        {
            edit2->clear();
        }else if(btn1==QMessageBox::No)
        {
            this->close();
        }
    }
}
void Widget::my_slot1()
{
    QMessageBox box(QMessageBox::Question,
                    "error",
                    "是否退出登录",
                    QMessageBox::Yes|QMessageBox::No,
                    this);
    box.setDefaultButton(QMessageBox::Yes);
    int btn=box.exec();
    if(btn==QMessageBox::Yes)
    {
        this->close();
    }
}

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