qt 10.8作业

源文件

#include "widget.h"



Widget::Widget(QWidget *parent)
    : QWidget(parent)

{
    //输出数据
    qDebug()<<"hellow";

    //更改窗口名字
    qDebug()<<"当前界面标题为:"<<this->windowType();
    this->setWindowTitle("My first window");

    //更改窗口图标
    this->setWindowIcon(QIcon(":/map/wenjian.png"));

    //设置窗口尺寸
    qDebug()<<"width:"<<this->width()<<"  height:"<<this->height();
    qDebug()<<"size :"<<this->size();
    this->setMaximumSize(800,600);
    this->setMinimumSize(QSize(400,300));
    this->resize(700,600);
//    this->setFixedSize((500,400));

    //标签组件(账号密码）
    label1 = new QLabel(this);
    label1->setText("账号");
    label1->resize(40,40);
    label1->move(130,300);

    label2 = new QLabel(this);
    label2->setText("密码");
    label2->resize(label1->size());
//    label2->move(label1->x(),label1->y()+width()+10-label2->y());
    label2->move(130,340);

    //行编辑（账号密码的输入）
    line1 = new QLineEdit(this);
    line1->resize(300,30);
    line1->move(label1->x()+label1->width()+2,label1->y());

    line2 = new QLineEdit(this);
    line2->resize(300,30);
    line2->move(label2->x()+label2->width()+2,label2->y());
    line2->clear();
    line2->setPlaceholderText("             请输入密码");
    line2->setEchoMode(QLineEdit::Password);

    //按钮（登录/退出）
    btn1 = new  QPushButton(this);
    btn1->setText("登录");
    btn1->resize(80,40);
    btn1->move(250,400);
    btn1->setStyleSheet("color:white;background-color:skyblue;border-radius:10px;");

    btn2 = new  QPushButton(this);
    btn2->setText("退出");
    btn2->resize(80,40);
    btn2->move(350,400);
    btn2->setStyleSheet("color:red;background-color:yellow;border-radius:10px;");

    //logo
    lab = new QLabel(this);
    lab->resize(120,120);
    lab->setPixmap(QPixmap(":/map/tu.jpg"));
    lab->setScaledContents(true);
    lab->move(270,150);

    //登录链接
    connect(this->btn1,&QPushButton::clicked,this,&Widget::my_reg);

    //取消链接
    connect(this->btn2,&QPushButton::clicked,this,&Widget::on_QuesIcon_clicked);

}

void Widget::my_reg()
{
    if(line1->text() == line2->text())
    {
        int btn = QMessageBox::information(this,
                                           "登录",
                                           "登录成功",
                                           QMessageBox::Ok,
                                           QMessageBox::Ok);

        if(btn == QMessageBox::Ok)
        {
            qDebug() <<"确认执行";

            this->close();
            emit jump();
        }
    }
    else
    {
        QMessageBox box(QMessageBox::Critical,          //问题图标
                        "登录",                          //对话框标题
                        "登录失败，账号密码不匹配",                          // 对话框文本内容
                        QMessageBox::Ok|QMessageBox::No,    //对话框提供按钮
                        this);

        //调用函数设置相关属性
        box.setButtonText(QMessageBox::Ok,"重新登陆");
        box.setButtonText(QMessageBox::No,"退出");

        box.setDefaultButton(QMessageBox::Ok);

        //显示对话框，并返回用户点击的那个按钮值
        int btn = box.exec();

        //判断用户点击按钮值
        if(btn == QMessageBox::Ok)
        {
          line2->clear();

        }
        else if(btn == QMessageBox::No)
        {
            this->close();
        }
    }

}
void Widget::on_QuesIcon_clicked()
{
    QMessageBox box(QMessageBox::Question,          //问题图标
                    "问题",                          //对话框标题
                    "走吗",                          // 对话框文本内容
                    QMessageBox::Ok|QMessageBox::No,    //对话框提供按钮
                    this);

    //调用函数设置相关属性
    box.setButtonText(QMessageBox::Ok,"确认");
    box.setButtonText(QMessageBox::No,"下次一定");

    box.setDefaultButton(QMessageBox::No);

    //显示对话框，并返回用户点击的那个按钮值
    int btn = box.exec();

    //判断用户点击按钮值
    if(btn == QMessageBox::Ok)
    {
        qDebug() <<"走了";
        this->close();

    }
    else if(btn == QMessageBox::No)
    {
        qDebug() <<"下次一定";
    }
}

Widget::~Widget()
{
}

头文件

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QDebug>
#include <QIcon>
#include <QLabel>
#include <QLineEdit>
#include <QPushButton>
#include <QMessageBox>

QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACE

class Widget : public QWidget
{
    Q_OBJECT
public:
    QLabel *label1;
    QLabel *label2;
    QLineEdit *line1;
    QLineEdit *line2;
    QPushButton *btn1;
    QPushButton *btn2;
    QLabel *lab;

public:
    Widget(QWidget *parent = nullptr);
    ~Widget();

signals:
    void jump();



private slots:
//    void my_signal_1_slot();

      void my_reg();
      void on_QuesIcon_clicked();

};
#endif // WIDGET_H