Question

I need to validate that the text entered in a qlineedit has the form of the regexp, I tried to use this:

void MainWindow::checkReg( QLineEdit& mail, const QCheckBox& skip, string type )
{
    if(type == "mail")
    {
        if( skip.checkState() != 2)
        {
            QRegExp mailREX("\\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\\.[A-Z]{2,4}\\b");

            mailREX.setCaseSensitivity(Qt::CaseInsensitive);

            mailREX.setPatternSyntax(QRegExp::Wildcard);

            bool regMat = mailREX.exactMatch(mail.text());

            if(regMat == false)
            {
                QMessageBox *message = new QMessageBox(this);
                message->setWindowModality(Qt::NonModal);
                message->setText("Inserte los datos en el formato correcto");
                message->setStandardButtons(QMessageBox::Ok);
                message->setWindowTitle("MainWindow");
                message->setIcon(QMessageBox::Information);
                message->exec();

                this->ok = 0;

                mail.clear();
            }
            else
                this->ok = 1;
        }
    }
}

but every mail mail I entered like [e-mail], the error message appear. I also tried using

int regMat = mailREX.indexIn(mail.text());

and it didnt work.

Thanks in advance

Answer 1

Why did you set pattern syntax to wildcard? Your code works (assuming you understand, that your regexp itself is simplified) with RegExp pattern syntax:

QRegExp mailREX("\\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\\.[A-Z]{2,4}\\b");
mailREX.setCaseSensitivity(Qt::CaseInsensitive);
mailREX.setPatternSyntax(QRegExp::RegExp);
qDebug() << mailREX.exactMatch("[e-mail]");

prints true