0209作业

思维导图

作业

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，yeSINO，
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|N0,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

widget.cpp
 

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


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

    //设置界面尺寸
    //this->resize(320,448);
    this->setFixedSize(320,448);
    this->setWindowFlag(Qt::FramelessWindowHint);
    this->setStyleSheet("background-color:white");
    this->setWindowOpacity(0.7);

    //按钮组件
    btn1 = new QPushButton("登陆",this);
    btn1->setStyleSheet("background-color:blue;color:white");
    btn1->setWindowOpacity(0.5);
    btn1->resize(110,40);
    btn1->move(30,320);

    btn2 = new QPushButton("取消",this);
    btn2->setStyleSheet("background-color:blue;color:white");
    btn2->setWindowOpacity(0.5);
    btn2->resize(btn1->size());
    btn2->move(btn1->x()+btn1->width()+40,btn1->y());

    btn3 = new QRadioButton("已阅读并同意服务协议和QQ隐私保护指引",this);
    btn3->setStyleSheet("background-color:white;color:black");
    btn3->setWindowOpacity(0.7);
    btn3->move(30,290);



    //行编辑器
    edit1 = new QLineEdit(this);
    edit1->resize(260,50);
    edit1->setStyleSheet("background-color:white");
    edit1->setWindowOpacity(0.3);
    edit1->move(30,170);
    edit1->setAlignment(Qt::AlignCenter);
    edit1->setPlaceholderText("输入QQ账号");

    edit2 = new QLineEdit(this);
    edit2->resize(edit1->size());
    edit2->setStyleSheet("background-color:white");
    edit2->setWindowOpacity(0.3);
    edit2->move(edit1->x(),edit1->y()+edit1->height()+10);
    edit2->setAlignment(Qt::AlignCenter);
    edit2->setPlaceholderText("输入QQ密码");
    edit2->setEchoMode(QLineEdit::Password);

    //标签类
    lab = new QLabel(this);
    lab->resize(80,80);
    lab->setStyleSheet("background-color:white");
    lab->setWindowOpacity(0.7);
    lab->setPixmap(QPixmap(":/tupian/QQ_1739084470578.png"));
    lab->move(120,60);

    QObject::connect(btn1,
                     &QPushButton::clicked,
                     this,
                     &Widget::clicked_slot);

    QObject::connect(btn2,
                     &QPushButton::clicked,
                     this,
                     &Widget::clicked1_slot);


}

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

//按钮1的槽函数
void Widget::clicked_slot()
{
    QString username = edit1->text();
    QString password = edit2->text();
    if(username==password)
    {
        QMessageBox box(QMessageBox::Information,
                        "提示",
                        "登陆成功",
                        QMessageBox::Yes,
                        this);
        box.setWindowFlag(Qt::FramelessWindowHint);
        box.setButtonText(QMessageBox::Yes,"确定");
        int res = box.exec();
        if(res==QMessageBox::Yes)
        {
            this->close();
            emit jump();
        }
    }
    else
    {
        QMessageBox box1(QMessageBox::Critical,
                         "错误",
                         "账号和密码不匹配",
                         QMessageBox::Yes | QMessageBox::No,
                         this);
        box1.setWindowFlag(Qt::FramelessWindowHint);
        int res = box1.exec();
        if(res==QMessageBox::Yes)
        {
            edit2->clear();
        }
        else
        {
            this->close();
        }

    }
}

//按钮2的槽函数
void Widget::clicked1_slot()
{
    int res = QMessageBox::question(
                    this,
                    "问题",
                    "是否确定退出登录",
                    QMessageBox::Yes | QMessageBox::No,
                    QMessageBox::Yes
                    );
    if(res==QMessageBox::Yes)
    {
        this->close();
    }
}

second.cpp

#include "second.h"
#include "ui_second.h"



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

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

//跳转槽函数
void second::jump_slot()
{
    this->show();
}

main.cpp

#include "widget.h"
#include"second.h"

#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    w.show();
    second s;

    QObject::connect(&w,&Widget::jump,&s,&second::jump_slot);




    return a.exec();
}

效果展示