一、思维导图

二、练习

   QMovie *mv= new QMovie(":/Logo/giphy (2).gif");
    ui->label_5->setMovie(mv);
    ui->label_5->setScaledContents(true);
    mv->start();
    this->setWindowIcon(QIcon(":/Logo/bdf48b5198c8417da0e4fef6b72c5657.png"));


    //设置纯净窗口
    this->setWindowFlag(Qt::FramelessWindowHint);
    //去掉空白
    this->setAttribute(Qt::WA_TranslucentBackground);

}

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


void Widget::on_pushButton_clicked()
{

    emit my_signal();
    if(ui->acEdit->text()=="admin" && ui->psEdit->text()=="123456")
    {
        qDebug() << "登陆成功";
    }
    else
    {
        qDebug() << "登陆失败";
        ui->psEdit->setText("");
    }
}