constructor

login::login(QWidget *parent)
    :   QWidget(parent)
{
    int width  = 420;
    int height = 260;

    resize(width, height);
    //  Sorgt dafür, dass das Fenster nicht verkleinert werden kann
    //  (max|min Weite, max|min Höhe)
    setMaximumSize(width, height);
    setMinimumSize(width, height);

    //  um den Maximierungs Button abzuschalten
    Qt::WindowFlags flags;
    flags = Qt::Widget //Qt::Window
          | Qt::CustomizeWindowHint
          | Qt::WindowTitleHint
          | Qt::WindowMinimizeButtonHint
          | Qt::WindowCloseButtonHint;
    setWindowFlags(flags);

    l_titel = new QLabel(this);
    /*
    l_login = new QLabel("<h1><center>Login</center></h1>", this);
    l_name  = new QLabel("Name:", this);
    l_pass  = new QLabel("Passwort:", this);
    */
    l_login = new QLabel(tr("<h1><center>Login</center></h1>"), this);
    l_name  = new QLabel(tr("&Name:"), this);
    l_pass  = new QLabel(tr("&Password:"), this);

    le_name = new QLineEdit(this);
    le_pass = new QLineEdit(this);

    l_name->setBuddy(le_name);
    l_pass->setBuddy(le_pass);

    le_pass->setEchoMode(QLineEdit::Password);

    /*
    pb_login = new QPushButton("Login", this);
    pb_acc = new QPushButton("Neues Konto", this);
    */
    pb_login = new QPushButton(tr("&OK"), this);
    pb_login->setEnabled(false);
    pb_acc = new QPushButton(tr("New &user"), this);

    QPixmap image(QLatin1String(":/images/el_konjungunto_logo_0.3.png"));

    l_titel->setPixmap(image);
    l_titel->setScaledContents(true);

    //  Zentriert den Titel
    l_titel->setAlignment(Qt::AlignCenter);

    QGridLayout *layout = new QGridLayout;
    QHBoxLayout *buttonsLayout = new QHBoxLayout;

    layout->addWidget(l_titel, 0, 0, 1, -1);
    layout->addWidget(l_login, 1, 0, 1, -1);

    layout->addWidget(l_name, 2, 0);
    layout->addWidget(le_name, 2, 1);

    layout->addWidget(l_pass, 3, 0);
    layout->addWidget(le_pass, 3, 1);

    buttonsLayout->addWidget(pb_login);
    buttonsLayout->addWidget(pb_acc);

    layout->addLayout(buttonsLayout, 4, 1);
    setLayout(layout);

    le_name->setFocus();
    pb_login->setDefault(true);

    connect(le_name, SIGNAL(textChanged(const QString&)), SLOT(enableLoginButton(const QString&)));
    connect(pb_login, SIGNAL(clicked()), SLOT(s_login()));
    connect(pb_acc, SIGNAL(clicked()), SLOT(s_reg()));

}