--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/widgets/calculator/calculator.h	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,108 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef CALCULATOR_H
+#define CALCULATOR_H
+
+#include <QDialog>
+
+QT_BEGIN_NAMESPACE
+class QLineEdit;
+QT_END_NAMESPACE
+class Button;
+
+//! [0]
+class Calculator : public QDialog
+{
+    Q_OBJECT
+
+public:
+    Calculator(QWidget *parent = 0);
+
+private slots:
+    void digitClicked();
+    void unaryOperatorClicked();
+    void additiveOperatorClicked();
+    void multiplicativeOperatorClicked();
+    void equalClicked();
+    void pointClicked();
+    void changeSignClicked();
+    void backspaceClicked();
+    void clear();
+    void clearAll();
+    void clearMemory();
+    void readMemory();
+    void setMemory();
+    void addToMemory();
+//! [0]
+
+//! [1]
+private:
+//! [1] //! [2]
+    Button *createButton(const QString &text, const char *member);
+    void abortOperation();
+    bool calculate(double rightOperand, const QString &pendingOperator);
+//! [2]
+
+//! [3]
+    double sumInMemory;
+//! [3] //! [4]
+    double sumSoFar;
+//! [4] //! [5]
+    double factorSoFar;
+//! [5] //! [6]
+    QString pendingAdditiveOperator;
+//! [6] //! [7]
+    QString pendingMultiplicativeOperator;
+//! [7] //! [8]
+    bool waitingForOperand;
+//! [8]
+
+//! [9]
+    QLineEdit *display;
+//! [9] //! [10]
+
+    enum { NumDigitButtons = 10 };
+    Button *digitButtons[NumDigitButtons];
+};
+//! [10]
+
+#endif