qtqtqtqtqtqtqtqtqtqtqt

loginwidget.h

#include "LoginWidget.h"

LoginWidget::LoginWidget(QWidget *parent)
    : QWidget(parent)
{
    setupUI();
}

void LoginWidget::setupUI()
{

    setWindowTitle("登录界面");
    setFixedSize(300, 150);


    QLabel *userLabel = new QLabel("账号:", this);
    QLabel *passLabel = new QLabel("密码:", this);
    m_userEdit = new QLineEdit(this);
    m_passEdit = new QLineEdit(this);
    m_passEdit->setEchoMode(QLineEdit::Password); // 密码显示模式

    m_loginBtn = new QPushButton("登录", this);
    m_cancelBtn = new QPushButton("取消", this);


    QVBoxLayout *mainLayout = new QVBoxLayout(this);
    QHBoxLayout *btnLayout = new QHBoxLayout;


    QHBoxLayout *userLayout = new QHBoxLayout;
    userLayout->addWidget(userLabel);
    userLayout->addWidget(m_userEdit);


    QHBoxLayout *passLayout = new QHBoxLayout;
    passLayout->addWidget(passLabel);
    passLayout->addWidget(m_passEdit);


    btnLayout->addStretch();
    btnLayout->addWidget(m_loginBtn);
    btnLayout->addWidget(m_cancelBtn);


    mainLayout->addLayout(userLayout);
    mainLayout->addLayout(passLayout);
    mainLayout->addLayout(btnLayout);


    connect(m_loginBtn, &QPushButton::clicked, this, &LoginWidget::onLoginClicked);
    connect(m_cancelBtn, &QPushButton::clicked, this, &LoginWidget::onCancelClicked);
}

void LoginWidget::onLoginClicked()
{
    checkCredentials();
}

void LoginWidget::onCancelClicked()
{
    close();
}

void LoginWidget::checkCredentials()
{
    QString username = m_userEdit->text();
    QString password = m_passEdit->text();


    if(username == password && !username.isEmpty()) {
        QMessageBox::information(this, "成功", "登录成功！");
        emit jumpSignal();
        close();
    } else {
        QMessageBox::warning(this, "失败", "账号或密码错误");
        m_passEdit->clear();
        m_passEdit->setFocus();
    }
}