#include <QtGui/QApplication>
#include <QLocale>
#include <QValidator>
#include <QDebug>

static void check( const QValidator& qv, const QString& input, const bool shouldBeValid)
{
    int p( 0);
    QString s( input);
    const bool isValid( qv.validate( s, p) == QValidator::Acceptable);
    qDebug() << s << (isValid ? "is valid" : "is not valid");
    QString msg;
    if( isValid != shouldBeValid) {
       qDebug() << "PROBLEM";
    } 
    qDebug() << "expected behaviour (" << (isValid ? "" : "not") << "valid value)" << endl;
}

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    // first try: German locale
    QLocale german(QLocale::German, QLocale::Germany);
    QLocale::setDefault(german);
    QDoubleValidator germanV( 2.0, 2222.0, 5, 0);
    check( germanV, "1.000", false);
    check( germanV, "1,000", false);

    // second try: English locale
    QLocale::setDefault(QLocale::c());
    QDoubleValidator englishV( 2.0, 2222.0, 5, 0);
    check( englishV, "1.000", false);
    check( englishV, "1,000", false);

    return 0;
}