QWidgetItem Class Reference

The QWidgetItem class is a layout item that represents a widget. More...

#include <qlayoutitem.h>

Inheritance diagram for QWidgetItem:

Collaboration diagram for QWidgetItem:

Public Member Functions
	QWidgetItem (QWidget *w)
	Creates an item containing the given widget.
	~QWidgetItem ()
	Destructor.
QSize	sizeHint () const override
	\reimp
QSize	minimumSize () const override
	\reimp
QSize	maximumSize () const override
	\reimp
Qt::Orientations	expandingDirections () const override
	\reimp
bool	isEmpty () const override
	Returns true if the widget is hidden; otherwise returns false.
void	setGeometry (const QRect &) override
	\reimp
QRect	geometry () const override
	\reimp
QWidget *	widget () const override
	Returns the widget managed by this item.
bool	hasHeightForWidth () const override
	\reimp
int	heightForWidth (int) const override
	\reimp
int	minimumHeightForWidth (int) const override
	Returns the minimum height this widget needs for the given width, w.
QSizePolicy::ControlTypes	controlTypes () const override
	Returns the control type associated with the widget for which this size policy applies.
Public Member Functions inherited from QLayoutItem
	QLayoutItem (Qt::Alignment alignment=Qt::Alignment())
	Constructs a layout item with an alignment.
virtual	~QLayoutItem ()
	Destroys the QLayoutItem.
virtual void	invalidate ()
	Invalidates any cached information in this layout item.
virtual QLayout *	layout ()
	If this item is a QLayout, it is returned as a QLayout; otherwise \nullptr is returned.
virtual QSpacerItem *	spacerItem ()
	If this item is a QSpacerItem, it is returned as a QSpacerItem; otherwise \nullptr is returned.
Qt::Alignment	alignment () const
	Returns the alignment of this item.
void	setAlignment (Qt::Alignment a)
	Sets the alignment of this item to alignment.

Protected Attributes
QWidget *	wid
Protected Attributes inherited from QLayoutItem
Qt::Alignment	align

Detailed Description

The QWidgetItem class is a layout item that represents a widget.

\inmodule QtWidgets

Normally, you don't need to use this class directly. Qt's built-in layout managers provide the following functions for manipulating widgets in layouts:

\table \header

• Class
• Functions \row
• QBoxLayout
• \l{QBoxLayout::addWidget()}{addWidget()}, \l{QBoxLayout::insertWidget()}{insertWidget()}, \l{QBoxLayout::setStretchFactor()}{setStretchFactor()} \row
• QGridLayout
• \l{QGridLayout::addWidget()}{addWidget()} \row
• QStackedLayout
• \l{QStackedLayout::addWidget()}{addWidget()}, \l{QStackedLayout::insertWidget()}{insertWidget()}, \l{QStackedLayout::currentWidget()}{currentWidget()}, \l{QStackedLayout::setCurrentWidget()}{setCurrentWidget()}, \l{QStackedLayout::widget()}{widget()} \endtable

See also

QLayout, QSpacerItem, QLayoutItem::widget()

Definition at line 86 of file qlayoutitem.h.

Constructor & Destructor Documentation

QWidgetItem()

QWidgetItem::QWidgetItem ( QWidget * w )

inlineexplicit

Creates an item containing the given widget.

Definition at line 91 of file qlayoutitem.h.

~QWidgetItem()

QWidgetItem::~QWidgetItem ( )

default

Destructor.

Member Function Documentation

controlTypes()

QSizePolicy::ControlTypes QWidgetItem::controlTypes ( ) const

overridevirtual

Returns the control type associated with the widget for which this size policy applies.

See also

QSizePolicy::controlType()

Reimplemented from QLayoutItem.

Definition at line 691 of file qlayoutitem.cpp.

expandingDirections()

Qt::Orientations QWidgetItem::expandingDirections ( ) const

overridevirtual

\reimp

Implements QLayoutItem.

Definition at line 567 of file qlayoutitem.cpp.

geometry()

QRect QWidgetItem::geometry ( ) const

overridevirtual

\reimp

Implements QLayoutItem.

Definition at line 476 of file qlayoutitem.cpp.

hasHeightForWidth()

bool QWidgetItem::hasHeightForWidth ( ) const

overridevirtual

\reimp

Reimplemented from QLayoutItem.

Definition at line 487 of file qlayoutitem.cpp.

heightForWidth()

int QWidgetItem::heightForWidth ( int w ) const

overridevirtual

\reimp

Reimplemented from QLayoutItem.

Reimplemented in QWidgetItemV2.

Definition at line 497 of file qlayoutitem.cpp.

isEmpty()

bool QWidgetItem::isEmpty ( ) const

overridevirtual

Returns true if the widget is hidden; otherwise returns false.

See also

QWidget::isHidden()

Implements QLayoutItem.

Definition at line 680 of file qlayoutitem.cpp.

maximumSize()

QSize QWidgetItem::maximumSize ( ) const

overridevirtual

\reimp

Implements QLayoutItem.

Reimplemented in QWidgetItemV2.

Definition at line 626 of file qlayoutitem.cpp.

minimumHeightForWidth()

int QWidgetItem::minimumHeightForWidth ( int w ) const

overridevirtual

Returns the minimum height this widget needs for the given width, w.

The default implementation simply returns heightForWidth(w).

Reimplemented from QLayoutItem.

Definition at line 526 of file qlayoutitem.cpp.

minimumSize()

QSize QWidgetItem::minimumSize ( ) const

overridevirtual

\reimp

Implements QLayoutItem.

Reimplemented in QWidgetItemV2.

Definition at line 605 of file qlayoutitem.cpp.

setGeometry()

void QWidgetItem::setGeometry ( const QRect & rect )

overridevirtual

\reimp

Implements QLayoutItem.

Definition at line 408 of file qlayoutitem.cpp.

sizeHint()

QSize QWidgetItem::sizeHint ( ) const

overridevirtual

\reimp

Implements QLayoutItem.

Reimplemented in QWidgetItemV2.

Definition at line 648 of file qlayoutitem.cpp.

widget()

QWidget * QWidgetItem::widget ( ) const

overridevirtual

Returns the widget managed by this item.

Reimplemented from QLayoutItem.

Definition at line 330 of file qlayoutitem.cpp.

Member Data Documentation

wid

QWidget* QWidgetItem::wid

protected

Definition at line 108 of file qlayoutitem.h.

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The documentation for this class was generated from the following files:

• qtbase/src/widgets/kernel/qlayoutitem.h (8825bcdbdab5f37b185261d7ba06260dc8e9930d)
• qtbase/src/widgets/kernel/qlayoutitem.cpp (789d8b75bda3d6f7505805e5ff428c20abc3dbc1)