qtday2

头文件?

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QIcon>
#include <QLabel>
#include <QLineEdit>
#include <QPushButton>
#include <QDebug>
QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACE

class Widget : public QWidget
{
    Q_OBJECT

public:
    Widget(QWidget *parent = nullptr);
    ~Widget();
public slots:
    void btn1_slot();

private:
    Ui::Widget *ui;
};
#endif // WIDGET_H

函数

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

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
    //设置窗口
    this->setWindowTitle("GTA5");
    this->setWindowIcon(QIcon(":/pictrue/gta.jfif"));
    this->setWindowFlags(Qt::FramelessWindowHint);


    //设置标签
    //整个背景
    ui->lab1->setPixmap(QPixmap(":/pictrue/gta_login.jpg"));
    ui->lab1->setScaledContents(true);

    //R星logo
    ui->lab2->setPixmap(QPixmap(":/pictrue/rxing.png"));
    ui->lab2->setScaledContents(true);
    ui->lab2->setStyleSheet("border-radius:10px");

    ui->lab3->setPixmap(QPixmap(":/pictrue/denglu.webp"));
    ui->lab4->setPixmap(QPixmap(":/pictrue/passwd.jpg"));
    ui->lab3->setScaledContents(true);
    ui->lab4->setScaledContents(true);

    //设置行编辑器
    ui->edit1->setPlaceholderText("账号/邮箱");
    ui->edit2->setPlaceholderText("密码");
    ui->edit2->setEchoMode(QLineEdit::Password);

    //QT4手动关闭槽函数
    connect(ui->btn2,SIGNAL(clicked()),this,SLOT(close()));
    connect(ui->btn1,&QPushButton::clicked,this,&Widget::btn1_slot);

}

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


void Widget::btn1_slot()
{
    if(ui->edit1->text()=="admin"&&ui->edit2->text()=="123456")
    {
        qDebug()<<"登录成功";
        this->close();
    }
    else
    {
        qDebug()<<"登录失败";
        ui->edit2->setText("");
    }

}

效果图

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