QTDay2

使用手动连接，将登录框中的取消按钮使用qt4版本的连接到自定义的槽函数中，在自定义的槽函数中调用关闭函数

将登录按钮使用qt5版本的连接到自定义的槽函数中，在槽函数中判断ui界面上输入的账号是否为"admin"，密码是否为"123456",如果账号密码匹配成功，则输出“登录成功”，并关闭该界面，如果匹配失败，则输出登录失败，并将密码框中的内容清空

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

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
    this->setWindowTitle("QQ");
    //ui->logoLabel->setPixmap(QPixmap(":/ICon/qq.gif"));
    QMovie *mv = new QMovie(":/ICon/qq.gif");
    ui->logoLabel->setMovie(mv);
    mv->start();
    ui->logoLabel->setScaledContents(true);
    ui->usernameLabl->setPixmap(QPixmap(":/ICon/qq2.png"));
    ui->usernameLabl->resize(40,40);
    ui->usernameLabl->setScaledContents(true);
    ui->passwdLabl->setPixmap(QPixmap(":/ICon/qq3.png"));
    ui->passwdLabl->resize(40,40);
    ui->passwdLabl->setScaledContents(true);
    ui->usernameEdit->setPlaceholderText("QQ账号/手机号");
    ui->passwdEdit->setEchoMode(QLineEdit::Password);
    ui->loginBtn->setIcon(QIcon(":/ICon/qq2.png"));
    ui->guanbiBtn->setIcon(QIcon(":/ICon/qq3.png"));
    //1
    connect(ui->guanbiBtn,SIGNAL(clicked()),this,SLOT(close()));

    speecher = new QTextToSpeech(this);
    connect(ui->speakBtn,&QPushButton::clicked,this,&Widget::btn4_slot);
    connect(this,&Widget::my_signal,[&](){
        ui->biggerBtn->resize(ui->biggerBtn->width()+5,ui->biggerBtn->height()+5);
    });

}

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

void Widget::btn4_slot()
{
    static int flag =0;
    if(flag%3 == 0)
    {
        speecher->say("我没k");
    }
    else if(flag%3 == 1)
    {
        speecher->say("山驴波一");
    }
    else if(flag%3 == 2)
    {
        speecher->say("桀桀桀");
    }

    flag++;
}


void Widget::on_biggerBtn_clicked()
{
    emit my_signal();
}

void Widget::on_loginBtn_clicked()
{
    if(ui->usernameEdit->text() == "admin" && ui->passwdEdit->text() == "123456")
    {
        qDebug("%s","登录成功");
        this->close();
    }
    else
    {
        qDebug("%s","登录失败");
        ui->passwdEdit->setText("");
    }

}