Long live Qt 4.5!

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diff --git a/src/gui/widgets/qgroupbox.cpp b/src/gui/widgets/qgroupbox.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 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 the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qgroupbox.h"
+#ifndef QT_NO_GROUPBOX
+#include "qapplication.h"
+#include "qbitmap.h"
+#include "qdrawutil.h"
+#include "qevent.h"
+#include "qlayout.h"
+#include "qradiobutton.h"
+#include "qstyle.h"
+#include "qstyleoption.h"
+#include "qstylepainter.h"
+#ifndef QT_NO_ACCESSIBILITY
+#include "qaccessible.h"
+#endif
+#include <private/qwidget_p.h>
+
+#include "qdebug.h"
+
+QT_BEGIN_NAMESPACE
+
+class QGroupBoxPrivate : public QWidgetPrivate
+{
+    Q_DECLARE_PUBLIC(QGroupBox)
+
+public:
+    void skip();
+    void init();
+    void calculateFrame();
+    QString title;
+    int align;
+#ifndef QT_NO_SHORTCUT
+    int shortcutId;
+#endif
+
+    void _q_fixFocus(Qt::FocusReason reason);
+    void _q_setChildrenEnabled(bool b);
+    void click();
+    bool flat;
+    bool checkable;
+    bool checked;
+    bool hover;
+    bool overCheckBox;
+    QStyle::SubControl pressedControl;
+};
+
+/*!
+    Initialize \a option with the values from this QGroupBox. This method
+    is useful for subclasses when they need a QStyleOptionGroupBox, but don't want
+    to fill in all the information themselves.
+
+    \sa QStyleOption::initFrom()
+*/
+void QGroupBox::initStyleOption(QStyleOptionGroupBox *option) const
+{
+    if (!option)
+        return;
+
+    Q_D(const QGroupBox);
+    option->initFrom(this);
+    option->text = d->title;
+    option->lineWidth = 1;
+    option->midLineWidth = 0;
+    option->textAlignment = Qt::Alignment(d->align);
+    option->activeSubControls |= d->pressedControl;
+    option->subControls = QStyle::SC_GroupBoxFrame;
+
+    if (d->hover)
+        option->state |= QStyle::State_MouseOver;
+    else
+        option->state &= ~QStyle::State_MouseOver;
+
+    if (d->flat)
+        option->features |= QStyleOptionFrameV2::Flat;
+
+    if (d->checkable) {
+        option->subControls |= QStyle::SC_GroupBoxCheckBox;
+        option->state |= (d->checked ? QStyle::State_On : QStyle::State_Off);
+        if ((d->pressedControl == QStyle::SC_GroupBoxCheckBox
+            || d->pressedControl == QStyle::SC_GroupBoxLabel) && (d->hover || d->overCheckBox))
+            option->state |= QStyle::State_Sunken;
+    }
+
+    if (!option->palette.isBrushSet(isEnabled() ? QPalette::Active : 
+                                    QPalette::Disabled, QPalette::WindowText))
+        option->textColor = QColor(style()->styleHint(QStyle::SH_GroupBox_TextLabelColor,
+                                   option, this));
+
+    if (!d->title.isEmpty())
+        option->subControls |= QStyle::SC_GroupBoxLabel;
+}
+
+void QGroupBoxPrivate::click()
+{
+    Q_Q(QGroupBox);
+
+    QPointer<QGroupBox> guard(q);
+    q->setChecked(!checked);
+    if (!guard)
+        return;
+    emit q->clicked(checked);
+}
+
+/*!
+    \class QGroupBox
+    \brief The QGroupBox widget provides a group box frame with a title.
+
+    \ingroup organizers
+    \ingroup geomanagement
+    \ingroup appearance
+    \mainclass
+
+    A group box provides a frame, a title and a keyboard shortcut, and
+    displays various other widgets inside itself. The title is on top,
+    the keyboard shortcut moves keyboard focus to one of the group
+    box's child widgets.
+
+    QGroupBox also lets you set the \l title (normally set in the
+    constructor) and the title's \l alignment. Group boxes can be
+    \l checkable; child widgets in checkable group boxes are enabled or
+    disabled depending on whether or not the group box is \l checked.
+
+    You can minimize the space consumption of a group box by enabling
+    the \l flat property. In most \l{QStyle}{styles}, enabling this
+    property results in the removal of the left, right and bottom
+    edges of the frame.
+
+    QGroupBox doesn't automatically lay out the child widgets (which
+    are often \l{QCheckBox}es or \l{QRadioButton}s but can be any
+    widgets). The following example shows how we can set up a
+    QGroupBox with a layout:
+
+    \snippet examples/widgets/groupbox/window.cpp 2
+
+    \table 100%
+    \row \o \inlineimage windowsxp-groupbox.png Screenshot of a Windows XP style group box
+         \o \inlineimage macintosh-groupbox.png Screenshot of a Macintosh style group box
+         \o \inlineimage plastique-groupbox.png Screenshot of a Plastique style group box
+    \row \o A \l{Windows XP Style Widget Gallery}{Windows XP style} group box.
+         \o A \l{Macintosh Style Widget Gallery}{Macintosh style} group box.
+         \o A \l{Plastique Style Widget Gallery}{Plastique style} group box.
+    \endtable
+
+    \sa QButtonGroup, {Group Box Example}
+*/
+
+
+
+/*!
+    Constructs a group box widget with the given \a parent but with no title.
+*/
+
+QGroupBox::QGroupBox(QWidget *parent)
+    : QWidget(*new QGroupBoxPrivate, parent, 0)
+{
+    Q_D(QGroupBox);
+    d->init();
+}
+
+/*!
+    Constructs a group box with the given \a title and \a parent.
+*/
+
+QGroupBox::QGroupBox(const QString &title, QWidget *parent)
+    : QWidget(*new QGroupBoxPrivate, parent, 0)
+{
+    Q_D(QGroupBox);
+    d->init();
+    setTitle(title);
+}
+
+
+/*!
+    Destroys the group box.
+*/
+QGroupBox::~QGroupBox()
+{
+}
+
+void QGroupBoxPrivate::init()
+{
+    Q_Q(QGroupBox);
+    align = Qt::AlignLeft;
+#ifndef QT_NO_SHORTCUT
+    shortcutId = 0;
+#endif
+    flat = false;
+    checkable = false;
+    checked = true;
+    hover = false;
+    overCheckBox = false;
+    pressedControl = QStyle::SC_None;
+    calculateFrame();
+    q->setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred, 
+                     QSizePolicy::GroupBox));
+}
+
+void QGroupBox::setTitle(const QString &title)
+{
+    Q_D(QGroupBox);
+    if (d->title == title)                                // no change
+        return;
+    d->title = title;
+#ifndef QT_NO_SHORTCUT
+    releaseShortcut(d->shortcutId);
+    d->shortcutId = grabShortcut(QKeySequence::mnemonic(title));
+#endif
+    d->calculateFrame();
+
+    update();
+    updateGeometry();
+#ifndef QT_NO_ACCESSIBILITY
+    QAccessible::updateAccessibility(this, 0, QAccessible::NameChanged);
+#endif
+}
+
+/*!
+    \property QGroupBox::title
+    \brief the group box title text
+
+    The group box title text will have a keyboard shortcut if the title
+    contains an ampersand ('&') followed by a letter.
+
+    \snippet doc/src/snippets/code/src_gui_widgets_qgroupbox.cpp 0
+
+    In the example above, \key Alt+U moves the keyboard focus to the
+    group box. See the \l {QShortcut#mnemonic}{QShortcut}
+    documentation for details (to display an actual ampersand, use
+    '&&').
+
+    There is no default title text.
+
+    \sa alignment
+*/
+
+QString QGroupBox::title() const
+{
+    Q_D(const QGroupBox);
+    return d->title;
+}
+
+/*!
+    \property QGroupBox::alignment
+    \brief the alignment of the group box title.
+
+    Most styles place the title at the top of the frame. The horizontal
+    alignment of the title can be specified using single values from
+    the following list:
+
+    \list
+    \i Qt::AlignLeft aligns the title text with the left-hand side of the group box.
+    \i Qt::AlignRight aligns the title text with the right-hand side of the group box.
+    \i Qt::AlignHCenter aligns the title text with the horizontal center of the group box.
+    \endlist
+
+    The default alignment is Qt::AlignLeft.
+
+    \sa Qt::Alignment
+*/
+Qt::Alignment QGroupBox::alignment() const
+{
+    Q_D(const QGroupBox);
+    return QFlag(d->align);
+}
+
+void QGroupBox::setAlignment(int alignment)
+{
+    Q_D(QGroupBox);
+    d->align = alignment;
+    updateGeometry();
+    update();
+}
+
+/*! \reimp
+*/
+void QGroupBox::resizeEvent(QResizeEvent *e)
+{
+    QWidget::resizeEvent(e);
+}
+
+/*! \reimp
+*/
+
+void QGroupBox::paintEvent(QPaintEvent *)
+{
+    QStylePainter paint(this);
+    QStyleOptionGroupBox option;
+    initStyleOption(&option);
+    paint.drawComplexControl(QStyle::CC_GroupBox, option);
+}
+
+/*! \reimp  */
+bool QGroupBox::event(QEvent *e)
+{
+    Q_D(QGroupBox);
+#ifndef QT_NO_SHORTCUT
+    if (e->type() == QEvent::Shortcut) {
+        QShortcutEvent *se = static_cast<QShortcutEvent *>(e);
+        if (se->shortcutId() == d->shortcutId) {
+            if (!isCheckable()) {
+                d->_q_fixFocus(Qt::ShortcutFocusReason);
+            } else {
+                d->click();
+                setFocus(Qt::ShortcutFocusReason);
+            }
+            return true;
+        }
+    }
+#endif
+    QStyleOptionGroupBox box;
+    initStyleOption(&box);
+    switch (e->type()) {
+    case QEvent::HoverEnter:
+    case QEvent::HoverMove: {
+        QStyle::SubControl control = style()->hitTestComplexControl(QStyle::CC_GroupBox, &box,
+                                                                    static_cast<QHoverEvent *>(e)->pos(),
+                                                                    this);
+        bool oldHover = d->hover;
+        d->hover = d->checkable && (control == QStyle::SC_GroupBoxLabel || control == QStyle::SC_GroupBoxCheckBox);
+        if (oldHover != d->hover) {
+            QRect rect = style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxCheckBox, this)
+                         | style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxLabel, this);
+            update(rect);
+        }
+        return true;
+    }
+    case QEvent::HoverLeave:
+        d->hover = false;
+        if (d->checkable) {
+            QRect rect = style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxCheckBox, this)
+                         | style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxLabel, this);
+            update(rect);
+        }
+        return true;
+    case QEvent::KeyPress: {
+        QKeyEvent *k = static_cast<QKeyEvent*>(e);
+        if (!k->isAutoRepeat() && (k->key() == Qt::Key_Select || k->key() == Qt::Key_Space)) {
+            d->pressedControl = QStyle::SC_GroupBoxCheckBox;
+            update(style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxCheckBox, this));
+            return true;
+        }
+        break;
+    }
+    case QEvent::KeyRelease: {
+        QKeyEvent *k = static_cast<QKeyEvent*>(e);
+        if (!k->isAutoRepeat() && (k->key() == Qt::Key_Select || k->key() == Qt::Key_Space)) {
+            bool toggle = (d->pressedControl == QStyle::SC_GroupBoxLabel
+                           || d->pressedControl == QStyle::SC_GroupBoxCheckBox);
+            d->pressedControl = QStyle::SC_None;
+            if (toggle)
+                d->click();
+            return true;
+        }
+        break;
+    }
+    default:
+        break;
+    }
+    return QWidget::event(e);
+}
+
+/*!\reimp */
+void QGroupBox::childEvent(QChildEvent *c)
+{
+    Q_D(QGroupBox);
+    if (c->type() != QEvent::ChildAdded || !c->child()->isWidgetType())
+        return;
+    QWidget *w = (QWidget*)c->child();
+    if (d->checkable) {
+        if (d->checked) {
+            if (!w->testAttribute(Qt::WA_ForceDisabled))
+                w->setEnabled(true);
+        } else {
+            if (w->isEnabled()) {
+                w->setEnabled(false);
+                w->setAttribute(Qt::WA_ForceDisabled, false);
+            }
+        }
+    }
+}
+
+
+/*!
+    \internal
+
+    This private slot finds a widget in this group box that can accept
+    focus, and gives the focus to that widget.
+*/
+
+void QGroupBoxPrivate::_q_fixFocus(Qt::FocusReason reason)
+{
+    Q_Q(QGroupBox);
+    QWidget *fw = q->focusWidget();
+    if (!fw) {
+        QWidget * best = 0;
+        QWidget * candidate = 0;
+        QWidget * w = q;
+        while ((w = w->nextInFocusChain()) != q) {
+            if (q->isAncestorOf(w) && (w->focusPolicy() & Qt::TabFocus) == Qt::TabFocus && w->isVisibleTo(q)) {
+                if (!best && qobject_cast<QRadioButton*>(w) && ((QRadioButton*)w)->isChecked())
+                    // we prefer a checked radio button or a widget that
+                    // already has focus, if there is one
+                    best = w;
+                else
+                    if (!candidate)
+                        // but we'll accept anything that takes focus
+                        candidate = w;
+            }
+        }
+        if (best)
+            fw = best;
+        else
+            if (candidate)
+                fw = candidate;
+    }
+    if (fw)
+        fw->setFocus(reason);
+}
+
+/*
+    Sets the right frame rect depending on the title.
+*/
+void QGroupBoxPrivate::calculateFrame()
+{
+    Q_Q(QGroupBox);
+    QStyleOptionGroupBox box;
+    q->initStyleOption(&box);
+    QRect contentsRect = q->style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxContents, q);
+    q->setContentsMargins(contentsRect.left() - box.rect.left(), contentsRect.top() - box.rect.top(),
+                          box.rect.right() - contentsRect.right(), box.rect.bottom() - contentsRect.bottom());
+    setLayoutItemMargins(QStyle::SE_GroupBoxLayoutItem, &box);
+}
+
+/*! \reimp
+ */
+void QGroupBox::focusInEvent(QFocusEvent *fe)
+{ // note no call to super
+    Q_D(QGroupBox);
+    if (focusPolicy() == Qt::NoFocus) {
+        d->_q_fixFocus(fe->reason());
+    } else {
+        QStyleOptionGroupBox box;
+        initStyleOption(&box);
+        QRect rect = style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxCheckBox, this)
+            | style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxLabel, this);
+        update(rect);
+    }
+}
+
+
+/*!
+  \reimp
+*/
+QSize QGroupBox::minimumSizeHint() const
+{
+    Q_D(const QGroupBox);
+    QStyleOptionGroupBox option;
+    initStyleOption(&option);
+
+    QFontMetrics metrics(fontMetrics());
+
+    int baseWidth = metrics.width(d->title) + metrics.width(QLatin1Char(' '));
+    int baseHeight = metrics.height();
+    if (d->checkable) {
+        baseWidth += style()->pixelMetric(QStyle::PM_IndicatorWidth);
+        baseWidth += style()->pixelMetric(QStyle::PM_CheckBoxLabelSpacing);
+        baseHeight = qMax(baseHeight, style()->pixelMetric(QStyle::PM_IndicatorHeight));
+    }
+
+    QSize size = style()->sizeFromContents(QStyle::CT_GroupBox, &option, QSize(baseWidth, baseHeight), this);
+    return size.expandedTo(QWidget::minimumSizeHint());
+}
+
+/*!
+    \property QGroupBox::flat
+    \brief whether the group box is painted flat or has a frame
+
+    A group box usually consists of a surrounding frame with a title
+    at the top. If this property is enabled, only the top part of the frame is
+    drawn in most styles; otherwise the whole frame is drawn.
+
+    By default, this property is disabled; i.e. group boxes are not flat unless
+    explicitly specified.
+
+    \bold{Note:} In some styles, flat and non-flat group boxes have similar
+    representations and may not be as distinguishable as they are in other
+    styles.
+
+    \sa title
+*/
+bool QGroupBox::isFlat() const
+{
+    Q_D(const QGroupBox);
+    return d->flat;
+}
+
+void QGroupBox::setFlat(bool b)
+{
+    Q_D(QGroupBox);
+    if (d->flat == b)
+        return;
+    d->flat = b;
+    updateGeometry();
+    update();
+}
+
+
+/*!
+    \property QGroupBox::checkable
+    \brief whether the group box has a checkbox in its title
+
+    If this property is true, the group box displays its title using
+    a checkbox in place of an ordinary label. If the checkbox is checked,
+    the group box's children are enabled; otherwise they are disabled and
+    inaccessible.
+
+    By default, group boxes are not checkable.
+
+    If this property is enabled for a group box, it will also be initially
+    checked to ensure that its contents are enabled.
+
+    \sa checked
+*/
+void QGroupBox::setCheckable(bool checkable)
+{
+    Q_D(QGroupBox);
+
+    bool wasCheckable = d->checkable;
+    d->checkable = checkable;
+
+    if (checkable) {
+        setChecked(true);
+        if (!wasCheckable) {
+            setFocusPolicy(Qt::StrongFocus);
+            d->_q_setChildrenEnabled(true);
+            updateGeometry();
+        }
+    } else {
+        if (wasCheckable) {
+            setFocusPolicy(Qt::NoFocus);
+            d->_q_setChildrenEnabled(true);
+            updateGeometry();
+        }
+        d->_q_setChildrenEnabled(true);
+    }
+
+    if (wasCheckable != checkable) {
+        d->calculateFrame();
+        update();
+    }
+}
+
+bool QGroupBox::isCheckable() const
+{
+    Q_D(const QGroupBox);
+    return d->checkable;
+}
+
+
+bool QGroupBox::isChecked() const
+{
+    Q_D(const QGroupBox);
+    return d->checkable && d->checked;
+}
+
+
+/*!
+    \fn void QGroupBox::toggled(bool on)
+
+    If the group box is checkable, this signal is emitted when the check box
+    is toggled. \a on is true if the check box is checked; otherwise it is false.
+
+    \sa checkable
+*/
+
+
+/*!
+    \fn void QGroupBox::clicked(bool checked)
+    \since 4.2
+
+    This signal is emitted when the check box is activated (i.e. pressed down
+    then released while the mouse cursor is inside the button), or when the
+    shortcut key is typed, Notably, this signal is \e not emitted if you call
+    setChecked().
+
+    If the check box is checked \a checked is true; it is false if the check
+    box is unchecked.
+
+    \sa checkable, toggled(), checked
+*/
+
+/*!
+    \property QGroupBox::checked
+    \brief whether the group box is checked
+
+    If the group box is checkable, it is displayed with a check box.
+    If the check box is checked, the group box's children are enabled;
+    otherwise the children are disabled and are inaccessible to the user.
+
+    By default, checkable group boxes are also checked.
+
+    \sa checkable
+*/
+void QGroupBox::setChecked(bool b)
+{
+    Q_D(QGroupBox);
+    if (d->checkable) {
+        if (d->checked != b)
+            update();
+        bool wasToggled = (b != d->checked);
+        d->checked = b;
+        if (wasToggled) {
+            d->_q_setChildrenEnabled(b);
+            emit toggled(b);
+        }
+    }
+}
+
+/*
+  sets all children of the group box except the qt_groupbox_checkbox
+  to either disabled/enabled
+*/
+void QGroupBoxPrivate::_q_setChildrenEnabled(bool b)
+{
+    Q_Q(QGroupBox);
+    QObjectList childList = q->children();
+    for (int i = 0; i < childList.size(); ++i) {
+        QObject *o = childList.at(i);
+        if (o->isWidgetType()) {
+            QWidget *w = static_cast<QWidget *>(o);
+            if (b) {
+                if (!w->testAttribute(Qt::WA_ForceDisabled))
+                    w->setEnabled(true);
+            } else {
+                if (w->isEnabled()) {
+                    w->setEnabled(false);
+                    w->setAttribute(Qt::WA_ForceDisabled, false);
+                }
+            }
+        }
+    }
+}
+
+/*! \reimp */
+void QGroupBox::changeEvent(QEvent *ev)
+{
+    Q_D(QGroupBox);
+    if (ev->type() == QEvent::EnabledChange) {
+        if (d->checkable && isEnabled()) {
+            // we are being enabled - disable children
+            if (!d->checked)
+                d->_q_setChildrenEnabled(false);
+        }
+    } else if (ev->type() == QEvent::FontChange
+#ifdef Q_WS_MAC
+               || ev->type() == QEvent::MacSizeChange
+#endif
+               || ev->type() == QEvent::StyleChange) {
+        d->calculateFrame();
+    }
+    QWidget::changeEvent(ev);
+}
+
+/*! \reimp */
+void QGroupBox::mousePressEvent(QMouseEvent *event)
+{
+    if (event->button() != Qt::LeftButton) {
+        event->ignore();
+        return;
+    }
+
+    Q_D(QGroupBox);
+    QStyleOptionGroupBox box;
+    initStyleOption(&box);
+    d->pressedControl = style()->hitTestComplexControl(QStyle::CC_GroupBox, &box,
+                                                       event->pos(), this);
+    if (d->checkable && (d->pressedControl & (QStyle::SC_GroupBoxCheckBox | QStyle::SC_GroupBoxLabel))) {
+        d->overCheckBox = true;
+        update(style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxCheckBox, this));
+    }
+}
+
+/*! \reimp */
+void QGroupBox::mouseMoveEvent(QMouseEvent *event)
+{
+    Q_D(QGroupBox);
+    QStyleOptionGroupBox box;
+    initStyleOption(&box);
+    QStyle::SubControl pressed = style()->hitTestComplexControl(QStyle::CC_GroupBox, &box,
+                                                                event->pos(), this);
+    bool oldOverCheckBox = d->overCheckBox;
+    d->overCheckBox = (pressed == QStyle::SC_GroupBoxCheckBox || pressed == QStyle::SC_GroupBoxLabel);
+    if (d->checkable && (d->pressedControl == QStyle::SC_GroupBoxCheckBox || d->pressedControl == QStyle::SC_GroupBoxLabel)
+        && (d->overCheckBox != oldOverCheckBox))
+        update(style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxCheckBox, this));
+}
+
+/*! \reimp */
+void QGroupBox::mouseReleaseEvent(QMouseEvent *event)
+{
+    if (event->button() != Qt::LeftButton) {
+        event->ignore();
+        return;
+    }
+
+    Q_D(QGroupBox);
+    QStyleOptionGroupBox box;
+    initStyleOption(&box);
+    QStyle::SubControl released = style()->hitTestComplexControl(QStyle::CC_GroupBox, &box,
+                                                                 event->pos(), this);
+    bool toggle = d->checkable && (released == QStyle::SC_GroupBoxLabel
+                                   || released == QStyle::SC_GroupBoxCheckBox);
+    d->pressedControl = QStyle::SC_None;
+    d->overCheckBox = false;
+    if (toggle)
+        d->click();
+    else if (d->checkable)
+        update(style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxCheckBox, this));
+}
+
+#ifdef QT3_SUPPORT
+/*!
+    Use one of the constructors that doesn't take the \a name
+    argument and then use setObjectName() instead.
+*/
+QGroupBox::QGroupBox(QWidget *parent, const char *name)
+    : QWidget(*new QGroupBoxPrivate, parent, 0)
+{
+    Q_D(QGroupBox);
+    setObjectName(QString::fromAscii(name));
+    d->init();
+}
+
+/*!
+    Use one of the constructors that doesn't take the \a name
+    argument and then use setObjectName() instead.
+*/
+QGroupBox::QGroupBox(const QString &title, QWidget *parent, const char *name)
+    : QWidget(*new QGroupBoxPrivate, parent, 0)
+{
+    Q_D(QGroupBox);
+    setObjectName(QString::fromAscii(name));
+    d->init();
+    setTitle(title);
+}
+#endif // QT3_SUPPORT
+
+QT_END_NAMESPACE
+
+#include "moc_qgroupbox.cpp"
+
+#endif //QT_NO_GROUPBOX