/******************************************************************************** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).** All rights reserved.** Contact: Nokia Corporation (qt-info@nokia.com)**** This file is part of the examples of the Qt Toolkit.**** $QT_BEGIN_LICENSE:LGPL$** No Commercial Usage** This file contains pre-release code and may not be distributed.** You may use this file in accordance with the terms and conditions** contained in the Technology Preview License Agreement accompanying** this package.**** GNU Lesser General Public License Usage** Alternatively, this file may be used under the terms of the GNU Lesser** General Public License version 2.1 as published by the Free Software** Foundation and appearing in the file LICENSE.LGPL included in the** packaging of this file. Please review the following information to** ensure the GNU Lesser General Public License version 2.1 requirements** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.**** In addition, as a special exception, Nokia gives you certain additional** rights. These rights are described in the Nokia Qt LGPL Exception** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.**** If you have questions regarding the use of this file, please contact** Nokia at qt-info@nokia.com.****************** $QT_END_LICENSE$******************************************************************************/#include <qdebug.h>#include <QApplication>#include <QLineEdit>#include <QValidator>#include "ui_validators.h"class ValidatorWidget : public QWidget, public Ui::ValidatorsForm{ Q_OBJECTpublic: ValidatorWidget(QWidget *parent = 0);private slots: void updateValidator(); void updateDoubleValidator(); void _setLocale(const QLocale &l) { setLocale(l); updateValidator(); updateDoubleValidator(); }private: QIntValidator *validator; QDoubleValidator *doubleValidator;};ValidatorWidget::ValidatorWidget(QWidget *parent) : QWidget(parent){ setupUi(this); connect(localeSelector, SIGNAL(localeSelected(QLocale)), this, SLOT(_setLocale(QLocale))); connect(minVal, SIGNAL(editingFinished()), this, SLOT(updateValidator())); connect(maxVal, SIGNAL(editingFinished()), this, SLOT(updateValidator())); connect(editor, SIGNAL(editingFinished()), ledWidget, SLOT(flash())); connect(doubleMaxVal, SIGNAL(editingFinished()), this, SLOT(updateDoubleValidator())); connect(doubleMinVal, SIGNAL(editingFinished()), this, SLOT(updateDoubleValidator())); connect(doubleDecimals, SIGNAL(valueChanged(int)), this, SLOT(updateDoubleValidator())); connect(doubleFormat, SIGNAL(activated(int)), this, SLOT(updateDoubleValidator())); connect(doubleEditor, SIGNAL(editingFinished()), doubleLedWidget, SLOT(flash())); validator = 0; doubleValidator = 0; updateValidator(); updateDoubleValidator();};void ValidatorWidget::updateValidator(){ QIntValidator *v = new QIntValidator(minVal->value(), maxVal->value(), this); v->setLocale(locale()); editor->setValidator(v); delete validator; validator = v; QString s = editor->text(); int i = 0; if (validator->validate(s, i) == QValidator::Invalid) { editor->clear(); } else { editor->setText(s); }}void ValidatorWidget::updateDoubleValidator(){ QDoubleValidator *v = new QDoubleValidator(doubleMinVal->value(), doubleMaxVal->value(), doubleDecimals->value(), this); v->setNotation(static_cast<QDoubleValidator::Notation>(doubleFormat->currentIndex())); v->setLocale(locale()); doubleEditor->setValidator(v); delete doubleValidator; doubleValidator = v; QString s = doubleEditor->text(); int i = 0; if (doubleValidator->validate(s, i) == QValidator::Invalid) { doubleEditor->clear(); } else { doubleEditor->setText(s); }}int main(int argc, char **argv){ Q_INIT_RESOURCE(validators); QApplication app(argc, argv); ValidatorWidget w; w.show(); return app.exec();}#include "main.moc"