[Qt-interest] application won't terminate

[Kurtis Nusbaum]

My understanding of Qt says the following code should work. I have a
MainWindow that upon startup prompts the user for a password. The password
is then hashed and compared to another hash value. If the two do not match
the application should quit. But for some reason, when I call the close()
function, the Main window will close but the application does not terminate.
Anybody have some ideas? When I call the close function in other places in
my code the program terminates just fine.

Main function:
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();
    w.checkPassword();
    return a.exec();
}


MaindWindow CheckPassword Function:
void MainWindow::checkPassword(){
        if(passwordHash.isEmpty()){
                setupNewPassword();
        }
        else{
                bool ok = true;
                QString passwordInput = QInputDialog::getText(this,
tr("Enter Password"), tr("Password:"), QLineEdit::Password, QString(), &ok);
                if(ok){
                        QByteArray inputHash =
QCryptographicHash::hash(passwordInput.toUtf8(), QCryptographicHash::Sha1);
                        if(inputHash != passwordHash){
                                QMessageBox::critical(this, "Error",
"Incorrect Password");
                                close();
                        }
                }
                else{
                        QMessageBox::critical(this, "Error", "Bad
Password");
                        close();
                }
        }
}

MainWindow closeEvent function:
void MainWindow::closeEvent(QCloseEvent *event){
        saveSettings();
        event->accept();
}

-Kurtis
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