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# objects.cpp Example File
activeqt/hierarchy/objects.cpp

     /****************************************************************************
     **
     ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
     **
     ** This file is part of the example classes of the Qt Toolkit.
     **
     ** This file may be used under the terms of the GNU General Public
     ** License version 2.0 as published by the Free Software Foundation
     ** and appearing in the file LICENSE.GPL included in the packaging of
     ** this file.  Please review the following information to ensure GNU
     ** General Public Licensing requirements will be met:
     ** http://www.trolltech.com/products/qt/opensource.html
     **
     ** If you are unsure which license is appropriate for your use, please
     ** review the following information:
     ** http://www.trolltech.com/products/qt/licensing.html or contact the
     ** sales department at sales@trolltech.com.
     **
     ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
     ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
     **
     ****************************************************************************/

     #include "objects.h"
     #include <QLayout>
     #include <QPainter>

     /* Implementation of QParentWidget */
     QParentWidget::QParentWidget(QWidget *parent)
     : QWidget(parent)
     {
         vbox = new QVBoxLayout(this);
     }

     void QParentWidget::createSubWidget(const QString &name)
     {
         QSubWidget *sw = new QSubWidget(this, name);
         vbox->addWidget(sw);
         sw->setLabel(name);
         sw->show();
     }

     QSubWidget *QParentWidget::subWidget(const QString &name)
     {
         return qFindChild<QSubWidget*>(this, name);
     }

     QSize QParentWidget::sizeHint() const
     {
         return QWidget::sizeHint().expandedTo(QSize(100, 100));
     }

     /* Implementation of QSubWidget */
     QSubWidget::QSubWidget(QWidget *parent, const QString &name)
     : QWidget(parent)
     {
         setObjectName(name);
     }

     void QSubWidget::setLabel(const QString &text)
     {
         lbl = text;
         setObjectName(text);
         update();
     }

     QString QSubWidget::label() const
     {
         return lbl;
     }

     QSize QSubWidget::sizeHint() const
     {
         QFontMetrics fm(font());
         return QSize(fm.width(lbl), fm.height());
     }

     void QSubWidget::paintEvent(QPaintEvent *)
     {
         QPainter painter(this);
         painter.setPen(palette().text().color());
         painter.drawText(rect(), Qt::AlignCenter, lbl);
     }