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diff --git a/src/widgets/qgroupbox.cpp b/src/widgets/qgroupbox.cpp
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+/**********************************************************************
+**
+** Implementation of QGroupBox widget class
+**
+** Created : 950203
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of the widgets module of the Qt GUI Toolkit.
+**
+** This file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free
+** Software Foundation and appearing in the files LICENSE.GPL2
+** and LICENSE.GPL3 included in the packaging of this file.
+** Alternatively you may (at your option) use any later version
+** of the GNU General Public License if such license has been
+** publicly approved by Trolltech ASA (or its successors, if any)
+** and the KDE Free Qt Foundation.
+**
+** Please review the following information to ensure GNU General
+** Public Licensing requirements will be met:
+** http://trolltech.com/products/qt/licenses/licensing/opensource/.
+** If you are unsure which license is appropriate for your use, please
+** review the following information:
+** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
+** or contact the sales department at sales@trolltech.com.
+**
+** This file may be used under the terms of the Q Public License as
+** defined by Trolltech ASA and appearing in the file LICENSE.QPL
+** included in the packaging of this file.  Licensees holding valid Qt
+** Commercial licenses may use this file in accordance with the Qt
+** Commercial License Agreement provided with the Software.
+**
+** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
+** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
+** herein.
+**
+**********************************************************************/
+
+#include "qgroupbox.h"
+#ifndef QT_NO_GROUPBOX
+#include "qlayout.h"
+#include "qpainter.h"
+#include "qbitmap.h"
+#include "qaccel.h"
+#include "qradiobutton.h"
+#include "qfocusdata.h"
+#include "qobjectlist.h"
+#include "qdrawutil.h"
+#include "qapplication.h"
+#include "qstyle.h"
+#include "qcheckbox.h"
+#include "qbuttongroup.h"
+#if defined(QT_ACCESSIBILITY_SUPPORT)
+#include "qaccessible.h"
+#endif
+
+/*!
+    \class QGroupBox qgroupbox.h
+    \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, and the child widgets are usually laid out
+    horizontally (or vertically) inside the frame.
+
+    The simplest way to use it is to create a group box with the
+    desired number of columns (or rows) and orientation, and then just
+    create widgets with the group box as parent.
+
+    It is also possible to change the orientation() and number of
+    columns() after construction, or to ignore all the automatic
+    layout support and manage the layout yourself. You can add 'empty'
+    spaces to the group box with addSpace().
+
+    QGroupBox also lets you set the title() (normally set in the
+    constructor) and the title's alignment().
+
+    You can change the spacing used by the group box with
+    setInsideMargin() and setInsideSpacing(). To minimize space
+    consumption, you can remove the right, left and bottom edges of
+    the frame with setFlat().
+
+    <img src=qgrpbox-w.png>
+
+    \sa QButtonGroup
+*/
+
+class QCheckBox;
+
+class QGroupBoxPrivate
+{
+public:
+    QGroupBoxPrivate():
+	spacer( 0 ),
+	checkbox( 0 ) {}
+
+    QSpacerItem *spacer;
+    QCheckBox *checkbox;
+};
+
+
+
+
+/*!
+    Constructs a group box widget with no title.
+
+    The \a parent and \a name arguments are passed to the QWidget
+    constructor.
+
+    This constructor does not do automatic layout.
+*/
+
+QGroupBox::QGroupBox( QWidget *parent, const char *name )
+    : QFrame( parent, name )
+{
+    init();
+}
+
+/*!
+    Constructs a group box with the title \a title.
+
+    The \a parent and \a name arguments are passed to the QWidget
+    constructor.
+
+    This constructor does not do automatic layout.
+*/
+
+QGroupBox::QGroupBox( const QString &title, QWidget *parent, const char *name )
+    : QFrame( parent, name )
+{
+    init();
+    setTitle( title );
+}
+
+/*!
+    Constructs a group box with no title. Child widgets will be
+    arranged in \a strips rows or columns (depending on \a
+    orientation).
+
+    The \a parent and \a name arguments are passed to the QWidget
+    constructor.
+*/
+
+QGroupBox::QGroupBox( int strips, Orientation orientation,
+		    QWidget *parent, const char *name )
+    : QFrame( parent, name )
+{
+    init();
+    setColumnLayout( strips, orientation );
+}
+
+/*!
+    Constructs a group box titled \a title. Child widgets will be
+    arranged in \a strips rows or columns (depending on \a
+    orientation).
+
+    The \a parent and \a name arguments are passed to the QWidget
+    constructor.
+*/
+
+QGroupBox::QGroupBox( int strips, Orientation orientation,
+		    const QString &title, QWidget *parent,
+		    const char *name )
+    : QFrame( parent, name )
+{
+    init();
+    setTitle( title );
+    setColumnLayout( strips, orientation );
+}
+
+/*!
+    Destroys the group box.
+*/
+QGroupBox::~QGroupBox()
+{
+    delete d;
+}
+
+void QGroupBox::init()
+{
+    align = AlignAuto;
+    setFrameStyle( QFrame::GroupBoxPanel | QFrame::Sunken );
+#ifndef QT_NO_ACCEL
+    accel = 0;
+#endif
+    vbox = 0;
+    grid = 0;
+    d = new QGroupBoxPrivate();
+    lenvisible = 0;
+    nCols = nRows = 0;
+    dir = Horizontal;
+    marg = 11;
+    spac = 5;
+    bFlat = FALSE;
+}
+
+void QGroupBox::setTextSpacer()
+{
+    if ( !d->spacer )
+	return;
+    int h = 0;
+    int w = 0;
+    if ( isCheckable() || lenvisible ) {
+	QFontMetrics fm = fontMetrics();
+	int fh = fm.height();
+	if ( isCheckable() ) {
+#ifndef QT_NO_CHECKBOX
+	    fh = d->checkbox->sizeHint().height() + 2;
+	    w = d->checkbox->sizeHint().width() + 2*fm.width( "xx" );
+#endif
+	} else {
+	    fh = fm.height();
+	    w = fm.width( str, lenvisible ) + 2*fm.width( "xx" );
+	}
+	h = frameRect().y();
+	if ( layout() ) {
+	    int m = layout()->margin();
+	    int sp = layout()->spacing();
+	    // do we have a child layout?
+	    for ( QLayoutIterator it = layout()->iterator(); it.current(); ++it ) {
+		if ( it.current()->layout() ) {
+		    m += it.current()->layout()->margin();
+		    sp = QMAX( sp, it.current()->layout()->spacing() );
+		    break;
+		}
+	    }
+	    h = QMAX( fh-m, h );
+	    h += QMAX( sp - (h+m - fh), 0 );
+	}
+    }
+    d->spacer->changeSize( w, h, QSizePolicy::Minimum, QSizePolicy::Fixed );
+}
+
+
+void QGroupBox::setTitle( const QString &title )
+{
+    if ( str == title )				// no change
+	return;
+    str = title;
+#ifndef QT_NO_ACCEL
+    if ( accel )
+	delete accel;
+    accel = 0;
+    int s = QAccel::shortcutKey( title );
+    if ( s ) {
+	accel = new QAccel( this, "automatic focus-change accelerator" );
+	accel->connectItem( accel->insertItem( s, 0 ),
+			    this, SLOT(fixFocus()) );
+    }
+#endif
+#ifndef QT_NO_CHECKBOX
+    if ( d->checkbox ) {
+	d->checkbox->setText( str );
+	updateCheckBoxGeometry();
+    }
+#endif
+    calculateFrame();
+    setTextSpacer();
+
+    update();
+    updateGeometry();
+#if defined(QT_ACCESSIBILITY_SUPPORT)
+    QAccessible::updateAccessibility( this, 0, QAccessible::NameChanged );
+#endif
+}
+
+/*!
+    \property QGroupBox::title
+    \brief the group box title text.
+
+    The group box title text will have a focus-change keyboard
+    accelerator if the title contains \&, followed by a letter.
+
+    \code
+	g->setTitle( "&User information" );
+    \endcode
+    This produces "<u>U</u>ser information"; Alt+U moves the keyboard
+    focus to the group box.
+
+    There is no default title text.
+*/
+
+/*!
+    \property QGroupBox::alignment
+    \brief the alignment of the group box title.
+
+    The title is always placed on the upper frame line. The horizontal
+    alignment can be specified by the alignment parameter.
+
+    The alignment is one of the following flags:
+    \list
+    \i \c AlignAuto aligns the title according to the language,
+    usually to the left.
+    \i \c AlignLeft aligns the title text to the left.
+    \i \c AlignRight aligns the title text to the right.
+    \i \c AlignHCenter aligns the title text centered.
+    \endlist
+
+    The default alignment is \c AlignAuto.
+
+    \sa Qt::AlignmentFlags
+*/
+
+void QGroupBox::setAlignment( int alignment )
+{
+    align = alignment;
+#ifndef QT_NO_CHECKBOX
+    updateCheckBoxGeometry();
+#endif
+    update();
+}
+
+/*! \reimp
+*/
+void QGroupBox::resizeEvent( QResizeEvent *e )
+{
+    QFrame::resizeEvent(e);
+#ifndef QT_NO_CHECKBOX
+    if ( align & AlignRight || align & AlignCenter ||
+	 ( QApplication::reverseLayout() && !(align & AlignLeft) ) )
+	updateCheckBoxGeometry();
+#endif
+    calculateFrame();
+}
+
+/*! \reimp
+
+  \internal
+  overrides QFrame::paintEvent
+*/
+
+void QGroupBox::paintEvent( QPaintEvent *event )
+{
+    QPainter paint( this );
+
+    if ( lenvisible && !isCheckable() ) {	// draw title
+	QFontMetrics fm = paint.fontMetrics();
+	int h = fm.height();
+	int tw = fm.width( str, lenvisible ) + fm.width(QChar(' '));
+	int x;
+	int marg = bFlat ? 0 : 8;
+	if ( align & AlignHCenter )		// center alignment
+	    x = frameRect().width()/2 - tw/2;
+	else if ( align & AlignRight )	// right alignment
+	    x = frameRect().width() - tw - marg;
+	else if ( align & AlignLeft )		 // left alignment
+	    x = marg;
+	else { // auto align
+	    if( QApplication::reverseLayout() )
+		x = frameRect().width() - tw - marg;
+	    else
+		x = marg;
+	}
+	QRect r( x, 0, tw, h );
+	int va = style().styleHint(QStyle::SH_GroupBox_TextLabelVerticalAlignment, this);
+	if(va & AlignTop)
+	    r.moveBy(0, fm.descent());
+	QColor pen( (QRgb) style().styleHint(QStyle::SH_GroupBox_TextLabelColor, this )  );
+	if (!style().styleHint(QStyle::SH_UnderlineAccelerator, this))
+	    va |= NoAccel;
+	style().drawItem( &paint, r, ShowPrefix | AlignHCenter | va, colorGroup(),
+			  isEnabled(), 0, str, -1, ownPalette() ? 0 : &pen );
+	paint.setClipRegion( event->region().subtract( r ) ); // clip everything but title
+#ifndef QT_NO_CHECKBOX
+    } else if ( d->checkbox ) {
+	QRect cbClip = d->checkbox->geometry();
+	QFontMetrics fm = paint.fontMetrics();
+	cbClip.setX( cbClip.x() - fm.width(QChar(' ')) );
+	cbClip.setWidth( cbClip.width() + fm.width(QChar(' ')) );
+	paint.setClipRegion( event->region().subtract( cbClip ) );
+#endif
+    }
+    if ( bFlat ) {
+	    QRect fr = frameRect();
+	    QPoint p1( fr.x(), fr.y() + 1 );
+            QPoint p2( fr.x() + fr.width(), p1.y() );
+	    // ### This should probably be a style primitive.
+            qDrawShadeLine( &paint, p1, p2, colorGroup(), TRUE,
+                            lineWidth(), midLineWidth() );
+    } else {
+	drawFrame(&paint);
+    }
+    drawContents( &paint );			// draw the contents
+}
+
+
+/*!
+    Adds an empty cell at the next free position. If \a size is
+    greater than 0, the empty cell takes \a size to be its fixed width
+    (if orientation() is \c Horizontal) or height (if orientation() is
+    \c Vertical).
+
+    Use this method to separate the widgets in the group box or to
+    skip the next free cell. For performance reasons, call this method
+    after calling setColumnLayout() or by changing the \l
+    QGroupBox::columns or \l QGroupBox::orientation properties. It is
+    generally a good idea to call these methods first (if needed at
+    all), and insert the widgets and spaces afterwards.
+*/
+void QGroupBox::addSpace( int size )
+{
+    QApplication::sendPostedEvents( this, QEvent::ChildInserted );
+
+    if ( nCols <= 0 || nRows <= 0 )
+	return;
+
+    if ( row >= nRows || col >= nCols )
+	grid->expand( row+1, col+1 );
+
+    if ( size > 0 ) {
+	QSpacerItem *spacer
+	    = new QSpacerItem( ( dir == Horizontal ) ? 0 : size,
+			       ( dir == Vertical ) ? 0 : size,
+			       QSizePolicy::Fixed, QSizePolicy::Fixed );
+	grid->addItem( spacer, row, col );
+    }
+
+    skip();
+}
+
+/*!
+    \property QGroupBox::columns
+    \brief the number of columns or rows (depending on \l QGroupBox::orientation) in the group box
+
+    Usually it is not a good idea to set this property because it is
+    slow (it does a complete layout). It is best to set the number
+    of columns directly in the constructor.
+*/
+int QGroupBox::columns() const
+{
+    if ( dir == Horizontal )
+	return nCols;
+    return nRows;
+}
+
+void QGroupBox::setColumns( int c )
+{
+    setColumnLayout( c, dir );
+}
+
+/*!
+    Returns the width of the empty space between the items in the
+    group and the frame of the group.
+
+    Only applies if the group box has a defined orientation.
+
+    The default is usually 11, by may vary depending on the platform
+    and style.
+
+    \sa setInsideMargin(), orientation
+*/
+int QGroupBox::insideMargin() const
+{
+    return marg;
+}
+
+/*!
+    Returns the width of the empty space between each of the items
+    in the group.
+
+    Only applies if the group box has a defined orientation.
+
+    The default is usually 5, by may vary depending on the platform
+    and style.
+
+    \sa setInsideSpacing(), orientation
+*/
+int QGroupBox::insideSpacing() const
+{
+    return spac;
+}
+
+/*!
+    Sets the the width of the inside margin to \a m pixels.
+
+    \sa insideMargin()
+*/
+void QGroupBox::setInsideMargin( int m )
+{
+    marg = m;
+    setColumnLayout( columns(), dir );
+}
+
+/*!
+    Sets the width of the empty space between each of the items in
+    the group to \a s pixels.
+
+    \sa insideSpacing()
+*/
+void QGroupBox::setInsideSpacing( int s )
+{
+    spac = s;
+    setColumnLayout( columns(), dir );
+}
+
+/*!
+    \property QGroupBox::orientation
+    \brief the group box's orientation
+
+    A horizontal group box arranges it's children in columns, while a
+    vertical group box arranges them in rows.
+
+    Usually it is not a good idea to set this property because it is
+    slow (it does a complete layout). It is better to set the
+    orientation directly in the constructor.
+*/
+void QGroupBox::setOrientation( Qt::Orientation o )
+{
+    setColumnLayout( columns(), o );
+}
+
+/*!
+    Changes the layout of the group box. This function is only useful
+    in combination with the default constructor that does not take any
+    layout information. This function will put all existing children
+    in the new layout. It is not good Qt programming style to call
+    this function after children have been inserted. Sets the number
+    of columns or rows to be \a strips, depending on \a direction.
+
+    \sa orientation columns
+*/
+void QGroupBox::setColumnLayout(int strips, Orientation direction)
+{
+    if ( layout() )
+	delete layout();
+
+    vbox = 0;
+    grid = 0;
+
+    if ( strips < 0 ) // if 0, we create the vbox but not the grid. See below.
+	return;
+
+    vbox = new QVBoxLayout( this, marg, 0 );
+
+    d->spacer = new QSpacerItem( 0, 0, QSizePolicy::Minimum,
+				 QSizePolicy::Fixed );
+
+    setTextSpacer();
+    vbox->addItem( d->spacer );
+
+    nCols = 0;
+    nRows = 0;
+    dir = direction;
+
+    // Send all child events and ignore them. Otherwise we will end up
+    // with doubled insertion. This won't do anything because nCols ==
+    // nRows == 0.
+    QApplication::sendPostedEvents( this, QEvent::ChildInserted );
+
+    // if 0 or smaller , create a vbox-layout but no grid. This allows
+    // the designer to handle its own grid layout in a group box.
+    if ( strips <= 0 )
+	return;
+
+    dir = direction;
+    if ( dir == Horizontal ) {
+	nCols = strips;
+	nRows = 1;
+    } else {
+	nCols = 1;
+	nRows = strips;
+    }
+    grid = new QGridLayout( nRows, nCols, spac );
+    row = col = 0;
+    grid->setAlignment( AlignTop );
+    vbox->addLayout( grid );
+
+    // Add all children
+    if ( children() ) {
+	QObjectListIt it( *children() );
+	QWidget *w;
+	while( (w=(QWidget *)it.current()) != 0 ) {
+	    ++it;
+	    if ( w->isWidgetType()
+#ifndef QT_NO_CHECKBOX
+		 && w != d->checkbox
+#endif
+		 )
+		insertWid( w );
+	}
+    }
+}
+
+
+/*! \reimp  */
+bool QGroupBox::event( QEvent * e )
+{
+    if ( e->type() == QEvent::LayoutHint && layout() )
+	setTextSpacer();
+    return QFrame::event( e );
+}
+
+/*!\reimp */
+void QGroupBox::childEvent( QChildEvent *c )
+{
+    if ( !c->inserted() || !c->child()->isWidgetType() )
+	return;
+    QWidget *w = (QWidget*)c->child();
+#ifndef QT_NO_CHECKBOX
+    if ( d->checkbox ) {
+	if ( w == d->checkbox )
+	    return;
+	if ( d->checkbox->isChecked() ) {
+	    if ( !w->testWState( WState_ForceDisabled ) )
+		w->setEnabled( TRUE );
+	} else {
+	    if ( w->isEnabled() ) {
+		w->setEnabled( FALSE );
+		((QGroupBox*)w)->clearWState( WState_ForceDisabled );
+	    }
+	}
+    }
+#endif
+    if ( !grid )
+	return;
+    insertWid( w );
+}
+
+void QGroupBox::insertWid( QWidget* w )
+{
+    if ( row >= nRows || col >= nCols )
+	grid->expand( row+1, col+1 );
+    grid->addWidget( w, row, col );
+    skip();
+    QApplication::postEvent( this, new QEvent( QEvent::LayoutHint ) );
+}
+
+
+void QGroupBox::skip()
+{
+    // Same as QGrid::skip()
+    if ( dir == Horizontal ) {
+	if ( col+1 < nCols ) {
+	    col++;
+	} else {
+	    col = 0;
+	    row++;
+	}
+    } else { //Vertical
+	if ( row+1 < nRows ) {
+	    row++;
+	} else {
+	    row = 0;
+	    col++;
+	}
+    }
+}
+
+
+/*!
+    \internal
+
+    This private slot finds a widget in this group box that can accept
+    focus, and gives the focus to that widget.
+*/
+
+void QGroupBox::fixFocus()
+{
+    QFocusData * fd = focusData();
+    QWidget * orig = fd->home();
+    QWidget * best = 0;
+    QWidget * candidate = 0;
+    QWidget * w = orig;
+    do {
+	QWidget * p = w;
+	while( p && p != this && !p->isTopLevel() )
+	    p = p->parentWidget();
+	if ( p == this && ( w->focusPolicy() & TabFocus ) == TabFocus
+	     && w->isVisibleTo(this) ) {
+	    if ( w->hasFocus()
+#ifndef QT_NO_RADIOBUTTON
+		 || ( !best && ::qt_cast<QRadioButton*>(w)
+		 && ((QRadioButton*)w)->isChecked() )
+#endif
+		    )
+		// 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;
+	}
+	w = fd->next();
+    } while( w != orig );
+    if ( best )
+	best->setFocus();
+    else if ( candidate )
+	candidate->setFocus();
+}
+
+
+/*
+    Sets the right frame rect depending on the title. Also calculates
+    the visible part of the title.
+*/
+void QGroupBox::calculateFrame()
+{
+    lenvisible = str.length();
+
+    if ( lenvisible && !isCheckable() ) { // do we have a label?
+	QFontMetrics fm = fontMetrics();
+	while ( lenvisible ) {
+	    int tw = fm.width( str, lenvisible ) + 4*fm.width(QChar(' '));
+	    if ( tw < width() )
+		break;
+	    lenvisible--;
+	}
+	if ( lenvisible ) { // but do we also have a visible label?
+	    QRect r = rect();
+	    int va = style().styleHint(QStyle::SH_GroupBox_TextLabelVerticalAlignment, this);
+	    if(va & AlignVCenter)
+		r.setTop( fm.height()/2 );				// frame rect should be
+	    else if(va & AlignTop)
+		r.setTop(fm.ascent());
+	    setFrameRect( r );			//   smaller than client rect
+	    return;
+	}
+    } else if ( isCheckable() ) {
+#ifndef QT_NO_CHECKBOX
+	QRect r = rect();
+	int va = style().styleHint(QStyle::SH_GroupBox_TextLabelVerticalAlignment, this);
+	if( va & AlignVCenter )
+	    r.setTop( d->checkbox->rect().height()/2 );
+	else if( va & AlignTop )
+	    r.setTop( fontMetrics().ascent() );
+	setFrameRect( r );
+	return;
+#endif
+    }
+
+    // no visible label
+    setFrameRect( QRect(0,0,0,0) );		//  then use client rect
+}
+
+
+
+/*! \reimp
+ */
+void QGroupBox::focusInEvent( QFocusEvent * )
+{ // note no call to super
+    fixFocus();
+}
+
+
+/*!\reimp
+ */
+void QGroupBox::fontChange( const QFont & oldFont )
+{
+    QWidget::fontChange( oldFont );
+#ifndef QT_NO_CHECKBOX
+    updateCheckBoxGeometry();
+#endif
+    calculateFrame();
+    setTextSpacer();
+}
+
+/*!
+  \reimp
+*/
+
+QSize QGroupBox::sizeHint() const
+{
+    QFontMetrics fm( font() );
+    int tw, th;
+    if ( isCheckable() ) {
+#ifndef QT_NO_CHECKBOX
+	tw = d->checkbox->sizeHint().width() + 2*fm.width( "xx" );
+	th = d->checkbox->sizeHint().height() + fm.width( QChar(' ') );
+#endif
+    } else {
+	tw = fm.width( title() ) + 2 * fm.width( "xx" );
+	th = fm.height() + fm.width( QChar(' ') );
+    }
+
+    QSize s;
+    if ( layout() ) {
+	s = QFrame::sizeHint();
+	return s.expandedTo( QSize( tw, 0 ) );
+    } else {
+	QRect r = childrenRect();
+	QSize s( 100, 50 );
+	s = s.expandedTo( QSize( tw, th ) );
+	if ( r.isNull() )
+	    return s;
+
+	return s.expandedTo( QSize( r.width() + 2 * r.x(), r.height()+ 2 * r.y() ) );
+    }
+}
+
+/*!
+    \property QGroupBox::flat
+    \brief whether the group box is painted flat or has a frame
+
+    By default a group box has a surrounding frame, with the title
+    being placed on the upper frame line. In flat mode the right, left
+    and bottom frame lines are omitted, and only the thin line at the
+    top is drawn.
+
+    \sa title
+*/
+bool QGroupBox::isFlat() const
+{
+    return bFlat;
+}
+
+void QGroupBox::setFlat( bool b )
+{
+    if ( (bool)bFlat == b )
+	return;
+    bFlat = b;
+    update();
+}
+
+
+/*!
+    \property QGroupBox::checkable
+    \brief Whether the group box has a checkbox in its title.
+
+    If this property is TRUE, the group box has a checkbox. If the
+    checkbox is checked (which is the default), the group box's
+    children are enabled.
+
+    setCheckable() controls whether or not the group box has a
+    checkbox, and isCheckable() controls whether the checkbox is
+    checked or not.
+*/
+#ifndef QT_NO_CHECKBOX
+void QGroupBox::setCheckable( bool b )
+{
+    if ( (d->checkbox != 0) == b )
+	return;
+
+    if ( b ) {
+	if ( !d->checkbox ) {
+	    d->checkbox = new QCheckBox( title(), this, "qt_groupbox_checkbox" );
+            if (QButtonGroup *meAsButtonGroup = ::qt_cast<QButtonGroup*>(this))
+                meAsButtonGroup->remove(d->checkbox);
+	    setChecked( TRUE );
+	    setChildrenEnabled( TRUE );
+	    connect( d->checkbox, SIGNAL( toggled(bool) ),
+		     this, SLOT( setChildrenEnabled(bool) ) );
+	    connect( d->checkbox, SIGNAL( toggled(bool) ),
+		     this, SIGNAL( toggled(bool) ) );
+	    updateCheckBoxGeometry();
+	}
+	d->checkbox->show();
+    } else {
+	setChildrenEnabled( TRUE );
+	delete d->checkbox;
+	d->checkbox = 0;
+    }
+    calculateFrame();
+    setTextSpacer();
+    update();
+}
+#endif //QT_NO_CHECKBOX
+
+bool QGroupBox::isCheckable() const
+{
+#ifndef QT_NO_CHECKBOX
+    return ( d->checkbox != 0 );
+#else
+    return FALSE;
+#endif
+}
+
+
+bool QGroupBox::isChecked() const
+{
+#ifndef QT_NO_CHECKBOX
+    return d->checkbox && d->checkbox->isChecked();
+#else
+    return FALSE;
+#endif
+}
+
+
+/*!
+    \fn void QGroupBox::toggled( bool on )
+
+    If the group box has a check box (see \l isCheckable()) this signal
+    is emitted when the check box is toggled. \a on is TRUE if the check
+    box is checked; otherwise it is FALSE.
+*/
+
+/*!
+    \property QGroupBox::checked
+    \brief Whether the group box's checkbox is checked.
+
+    If the group box has a check box (see \l isCheckable()), and the
+    check box is checked (see \l isChecked()), the group box's children
+    are enabled. If the checkbox is unchecked the children are
+    disabled.
+*/
+#ifndef QT_NO_CHECKBOX
+void QGroupBox::setChecked( bool b )
+{
+    if ( d->checkbox )
+	d->checkbox->setChecked( b );
+}
+#endif
+
+/*
+  sets all children of the group box except the qt_groupbox_checkbox
+  to either disabled/enabled
+*/
+void QGroupBox::setChildrenEnabled( bool b )
+{
+    if ( !children() )
+	return;
+    QObjectListIt it( *children() );
+    QObject *o;
+    while( (o = it.current()) ) {
+	++it;
+	if ( o->isWidgetType()
+#ifndef QT_NO_CHECKBOX
+	     && o != d->checkbox
+#endif
+	     ) {
+	    QWidget *w = (QWidget*)o;
+	    if ( b ) {
+		if ( !w->testWState( WState_ForceDisabled ) )
+		    w->setEnabled( TRUE );
+	    } else {
+		if ( w->isEnabled() ) {
+		    w->setEnabled( FALSE );
+		    ((QGroupBox*)w)->clearWState( WState_ForceDisabled );
+		}
+	    }
+	}
+    }
+}
+
+/*! \reimp */
+void QGroupBox::setEnabled(bool on)
+{
+    QFrame::setEnabled(on);
+    if ( !d->checkbox || !on )
+	return;
+
+#ifndef QT_NO_CHECKBOX
+    // we are being enabled - disable children
+    if ( !d->checkbox->isChecked() )
+	setChildrenEnabled( FALSE );
+#endif
+}
+
+/*
+  recalculates and sets the checkbox setGeometry
+*/
+#ifndef QT_NO_CHECKBOX
+void QGroupBox::updateCheckBoxGeometry()
+{
+    if ( d->checkbox ) {
+	QSize cbSize = d->checkbox->sizeHint();
+	QRect cbRect( 0, 0, cbSize.width(), cbSize.height() );
+
+	int marg = bFlat ? 2 : 8;
+	marg += fontMetrics().width( QChar(' ') );
+
+	if ( align & AlignHCenter ) {
+	    cbRect.moveCenter( frameRect().center() );
+	    cbRect.moveTop( 0 );
+	} else if ( align & AlignRight ) {
+	    cbRect.moveRight( frameRect().right() - marg );
+	} else if ( align & AlignLeft ) {
+	    cbRect.moveLeft( frameRect().left() + marg );
+	} else { // auto align
+	    if( QApplication::reverseLayout() )
+		cbRect.moveRight( frameRect().right() - marg );
+	    else
+		cbRect.moveLeft( frameRect().left() + marg );
+	}
+
+	d->checkbox->setGeometry( cbRect );
+    }
+}
+#endif //QT_NO_CHECKBOX
+
+
+#endif //QT_NO_GROUPBOX