The QVBoxLayout class lines up widgets vertically. More...

Inheritance diagram for QVBoxLayout:

Public Methods
	QVBoxLayout ()

	QVBoxLayout (QWidget *parent)

	~QVBoxLayout ()

Public Methods inherited from QBoxLayout
	QBoxLayout (Direction direction, QWidget *parent=nullptr)

	~QBoxLayout ()

void	addItem (QLayoutItem *item) override

void	addLayout (QLayout *layout, int stretch=0)

void	addSpacerItem (QSpacerItem *spacerItem)

void	addSpacing (int size)

void	addStretch (int stretch=0)

void	addStrut (int size)

void	addWidget (QWidget *widget, int stretch=0, Qt::Alignment alignment=Qt::Alignment ())

int	count () const override

Direction	direction () const

Qt::Orientations	expandingDirections () const override

bool	hasHeightForWidth () const override

int	heightForWidth (int width) const override

void	insertItem (int index, QLayoutItem *item)

void	insertLayout (int index, QLayout *layout, int stretch=0)

void	insertSpacerItem (int index, QSpacerItem *spacerItem)

void	insertSpacing (int index, int size)

void	insertStretch (int index, int stretch=0)

void	insertWidget (int index, QWidget *widget, int stretch=0, Qt::Alignment alignment=Qt::Alignment ())

void	invalidate () override

QLayoutItem *	itemAt (int index) const override

QSize	maximumSize () const override

int	minimumHeightForWidth (int width) const override

QSize	minimumSize () const override

void	setDirection (Direction direction)

void	setGeometry (const QRect &rect) override

void	setSpacing (int spacing)

void	setStretch (int index, int stretch)

bool	setStretchFactor (QLayout *layout, int stretch)

bool	setStretchFactor (QWidget *widget, int stretch)

QSize	sizeHint () const override

int	spacing () const

int	stretch (int index) const

QLayoutItem *	takeAt (int index) override

Public Methods inherited from QLayout
	QLayout ()

	QLayout (QWidget *parent)

bool	activate ()

void	addWidget (QWidget *w)

QMargins	contentsMargins () const

QRect	contentsRect () const

QSizePolicy::ControlTypes	controlTypes () const override

Qt::Orientations	expandingDirections () const override

QRect	geometry () const override

void	getContentsMargins (int left, int top, int right, int bottom) const

virtual int	indexOf (QWidget *widget) const

void	invalidate () override

bool	isEmpty () const override

bool	isEnabled () const

QLayout *	layout () override

int	margin () const

QSize	maximumSize () const override

QWidget *	menuBar () const

QSize	minimumSize () const override

QWidget *	parentWidget () const

void	removeItem (QLayoutItem *item)

void	removeWidget (QWidget *widget)

virtual QLayoutItem *	replaceWidget (QWidget from, QWidget to, Qt::FindChildOptions options=Qt::FindChildrenRecursively)

bool	setAlignment (QLayout *layout, Qt::Alignment alignment)

void	setAlignment (Qt::Alignment alignment)

bool	setAlignment (QWidget *widget, Qt::Alignment alignment)

void	setContentsMargins (const QMargins &margins)

void	setContentsMargins (int left, int top, int right, int bottom)

void	setEnabled (bool enable)

void	setGeometry (const QRect &rect) override

void	setMargin (int margin)

void	setMenuBar (QWidget *widget)

void	setSizeConstraint (SizeConstraint constraint)

void	setSpacing (int spacing)

SizeConstraint	sizeConstraint () const

int	spacing () const

void	update ()

Public Methods inherited from QObject
	QObject (QObject *parent=nullptr)

	~QObject ()

bool	blockSignals (bool block)

const QList< QObject * > &	children () const

bool	connect (const QObject *sender, const QString &signalMethod, const QString &location, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)

bool	connect (const QObject *sender, const QString &signalMethod, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)

bool	disconnect (const QObject *receiver, const QString &slotMethod=QString ()) const

bool	disconnect (const QString &signalMethod, const QString &location, const QObject *receiver=nullptr, const QString &slotMethod=QString ()) const

bool	disconnect (const QString &signalMethod=QString (), const QObject *receiver=nullptr, const QString &slotMethod=QString ()) const

void	dumpObjectInfo ()

void	dumpObjectTree ()

QList< QString >	dynamicPropertyNames () const

virtual bool	event (QEvent *event)

virtual bool	eventFilter (QObject watched, QEvent event)

template<typename T >
T	findChild (const QString &childName=QString ()) const

template<class T >
QList< T >	findChildren (const QRegularExpression &regExp, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const

template<class T >
QList< T >	findChildren (const QString &childName=QString (), Qt::FindChildOptions options=Qt::FindChildrenRecursively) const

bool	inherits (const QString &className) const

void	installEventFilter (QObject *filterObj)

bool	isWidgetType () const

bool	isWindowType () const

void	killTimer (int id)

const QMetaObject *	metaObject () const

void	moveToThread (QThread *targetThread)

QString	objectName () const

QObject *	parent () const

template<class T = QVariant>
T	property (const QString &name) const

void	removeEventFilter (QObject *obj)

void	setObjectName (const QString &name)

void	setParent (QObject *parent)

bool	setProperty (const QString &name, const QVariant &value)

bool	signalsBlocked () const

int	startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer)

QThread *	thread () const

Public Methods inherited from QLayoutItem
	QLayoutItem (Qt::Alignment alignment=Qt::Alignment ())

virtual	~QLayoutItem ()

Qt::Alignment	alignment () const

void	setAlignment (Qt::Alignment alignment)

virtual QSpacerItem *	spacerItem ()

virtual QWidget *	widget ()

Additional Inherited Members
Public Types inherited from QBoxLayout
enum	Direction

Public Types inherited from QLayout
enum	SizeConstraint

Public Signals inherited from QObject
void	destroyed (QObject *obj=nullptr)

void	objectNameChanged (const QString &objectName)

Public Slots inherited from QObject
void	deleteLater ()

Static Public Methods inherited from QLayout
static QSize	closestAcceptableSize (const QWidget *widget, const QSize &size)

Static Public Methods inherited from QObject
static bool	connect (const QObject sender, const QMetaMethod &signalMethod, const QObject receiver, const QMetaMethod &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)

static bool	connect (const QObject sender, const QString &signalMethod, const QObject receiver, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection, const QString &location=QString ())

static bool	connect (const QObject sender, const QString &signalMethod, const QString &location, const QObject receiver, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)

template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class SlotClass , class... SlotArgs, class SlotReturn >
static bool	connect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver receiver, SlotReturn (SlotClass::slotMethod)(SlotArgs...), Qt::ConnectionType type=Qt::AutoConnection)

template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class T >
static bool	connect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver *receiver, T slotLambda, Qt::ConnectionType type=Qt::AutoConnection)

static bool	disconnect (const QObject sender, const QMetaMethod &signalMethod, const QObject receiver, const QMetaMethod &slotMethod)

static bool	disconnect (const QObject sender, const QString &signalMethod, const QObject receiver, const QString &slotMethod)

static bool	disconnect (const QObject sender, const QString &signalMethod, const QString &location, const QObject receiver, const QString &slotMethod)

static bool	disconnect (const QObject sender, std::nullptr_t, const QObject receiver, std::nullptr_t)

template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class SlotClass , class... SlotArgs, class SlotReturn >
static bool	disconnect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver receiver, SlotReturn (SlotClass::slotMethod)(SlotArgs...))

template<class Sender , class SignalClass , class... SignalArgs, class Receiver >
static bool	disconnect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver *receiver, std::nullptr_t slotMethod=nullptr)

template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class T >
static bool	disconnect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver *receiver, T slotMethod)

static QMetaObject &	staticMetaObject ()

static QString	tr (const char text, const char comment=nullptr, std::optional< int > numArg=std::optional< int >())

Protected Methods inherited from QLayout
void	addChildLayout (QLayout *layout)

void	addChildWidget (QWidget *widget)

QRect	alignmentRect (const QRect &rect) const

void	childEvent (QChildEvent *event) override

Protected Methods inherited from QObject
virtual void	childEvent (QChildEvent *event)

virtual void	connectNotify (const QMetaMethod &signalMethod) const

virtual void	customEvent (QEvent *event)

virtual void	disconnectNotify (const QMetaMethod &signalMethod) const

bool	isSignalConnected (const QMetaMethod &signalMethod) const

int	receivers (const QString &signal) const

QObject *	sender () const

int	senderSignalIndex () const

virtual void	timerEvent (QTimerEvent *event)

Properties inherited from QLayout
	margin

	sizeConstraint

	spacing

Properties inherited from QObject
	objectName

Related Functions inherited from QObject
T	qobject_cast (QObject *object)

	QObjectList

Detailed Description

The QVBoxLayout class lines up widgets vertically. This class is used to construct vertically box layout objects. Refer to QBoxLayout for additional details.

Example

The example shown below is the simplest use of this class.

The first five lines create the widgets which will be used in the layout. Then a new QVBoxLayout is created and the widgets are added into the layout. The last step is to call QWidget::setLayout() to install the QVBoxLayout object onto the widget. At that point the widgets in the layout are changed to have window as their parent.

Horizontal box layout with five child widgets

QWidget *window = new QWidget;
QPushButton *button1 = new QPushButton("One");
QPushButton *button2 = new QPushButton("Two");
QPushButton *button3 = new QPushButton("Three");
QPushButton *button4 = new QPushButton("Four");
QPushButton *button5 = new QPushButton("Five");
 
QVBoxLayout *layout = new QVBoxLayout;
layout->addWidget(button1);
layout->addWidget(button2);
layout->addWidget(button3);
layout->addWidget(button4);
layout->addWidget(button5);
 
window->setLayout(layout);
window->show();

See also: QHBoxLayout, QGridLayout, QStackedLayout, Layout Management

Constructor & Destructor Documentation

QVBoxLayout::QVBoxLayout ( )

Constructs a new vertical box layout. This QVBoxLayout must be added to another layout to have any effect.

QVBoxLayout::QVBoxLayout ( QWidget * parent )

explicit

Constructs a new vertical box with the given parent.

QVBoxLayout::~QVBoxLayout ( )

Destroys this box layout. The widgets controlled by this layout are not destroyed.

Public Methods

Additional Inherited Members

Detailed Description

Example

Constructor & Destructor Documentation