12.8作业

1.头文件
 

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QDebug>
#include <QMovie>

QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACE

class Widget : public QWidget
{
    Q_OBJECT

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

private slots:
    void login();

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

2.源文件
 

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

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    this->setWindowFlag(Qt::FramelessWindowHint);
    ui->setupUi(this);
    ui->logolab->setPixmap(QPixmap(":/pictrue/5.png"));
    ui->logolab->setScaledContents(true);

    ui->passwdlab->setPixmap(QPixmap(":/pictrue/2.jpg"));
    ui->passwdlab->setScaledContents(true);

    ui->userlab->setPixmap(QPixmap(":/pictrue/6.jpg"));
    ui->userlab->setScaledContents(true);

    QMovie *mv = new QMovie(":/pictrue/4.gif");
    ui->lab1->setMovie(mv);
    mv->start();
    ui->lab1->setScaledContents(true);

    QMovie *mv1 = new QMovie(":/pictrue/6.gif");
    ui->lab2->setMovie(mv1);
    mv1->start();
    ui->lab2->setScaledContents(true);

    ui->passwdedit->setEchoMode(QLineEdit::Password);
    //qt4 实现取消按钮关闭窗口
    connect(ui->cancelbtn,SIGNAL(clicked()),this,SLOT(close()));
    //qt5
    connect(ui->dengbtn,&QPushButton::clicked,this,&Widget::login);


}

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

void Widget::login()
{

   if(ui->useredit->text() == "admin" && ui->passwdedit->text() == "123456")
   {
       qDebug() << "登陆成功" ;
       this->close();
   }
   else
   {
       ui->passwdedit->clear();
       qDebug() <<"登陆失败";
   }
}