0406作业

Posted 2023-04-07 weixin_46087836

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

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)

    ui->setupUi(this);

    //获取界面尺寸
    QSize s = this->size();
    qDebug()<<"w:"<<s.width()<<" h:"<<s.height();
    qDebug()<<this->size();

    //更改尺寸
    this->resize(100,200);
    this->resize(QSize(500,500));

    //设置最小尺寸
    this->setMinimumSize(500,400);
    this->setMaximumSize(500,400);

    //设置窗口标题
    this->setWindowTitle("登录界面");

    //设置窗口图标
    this->setWindowIcon(QIcon(":/picture/qq.png"));

    //第一个lable
    QLabel  *lab = new QLabel;
    lab->setParent(this);
    lab->resize(500,150);
    lab->setPixmap(QPixmap(":/picture/1.png"));
    //用户名lable
    QLabel  *lab1 = new QLabel;
    lab1->setParent(this);
    lab1->move(50,200);
    lab1->setPixmap(QPixmap(":/picture/yhm.png"));
    //密码lable
    QLabel  *lab2 = new QLabel(this);
    lab2->move(50,250);
    lab2->setPixmap(QPixmap(":/picture/mm.png"));

    //将自定义的信号与槽函数进行连接
    //将自定义的函数，与自定义槽函数进行连接
        connect(this, &Widget::mySignal, [](QString e)
            qDebug()<<e;
        );



Widget::~Widget()

    delete ui;






void Widget::on_pb1_clicked()

    if(ui->line1->text()=="admin"&&ui->line2->text()=="123456")
    
        ui->label2->setText("登录成功！");
          QMessageBox box;
          box.setText("登录成功");
          box.setStandardButtons(QMessageBox::Ok);

          int ret = box.exec();
          if(ret == QMessageBox::Ok)
           
               qDebug()<<"Ok";
               //关闭自身界面
                this->close();

               //跳转到其他界面
                emit mySignal("hello world");       //发射自定义的信号
           



    
    else
    
        ui->label2->setText("账户密码不匹配");
         int ret = QMessageBox::information(this,
                        "信息",
                        "账号密码不匹配，是否重新登录？",
                        QMessageBox::Ok|QMessageBox::No
                        );

        if(ret == QMessageBox::No)
        
            qDebug()<<"no";
            close();
        
        else
        

            ui->line2->clear();
            qDebug()<<"yes";
        

    





void Widget::on_pb2_clicked()

    //实例化对象
    QMessageBox box(QMessageBox::Information,
                    "信息",
                    "确定退出吗",
                    QMessageBox::Ok|QMessageBox::No,
                    this);
    //调用进入运行态
    int ret = box.exec();
    
    if(ret == QMessageBox::No)
    
        ui->line2->clear();
        qDebug()<<"no";
    
    else
    
        qDebug()<<"yes";
        close();