The QTreeWidget class provides a tree view that uses a predefined tree model. More...

Inheritance diagram for QTreeWidget:

Public Signals
void	currentItemChanged (QTreeWidgetItem current, QTreeWidgetItem previous)

void	itemActivated (QTreeWidgetItem *item, int column)

void	itemChanged (QTreeWidgetItem *item, int column)

void	itemClicked (QTreeWidgetItem *item, int column)

void	itemCollapsed (QTreeWidgetItem *item)

void	itemDoubleClicked (QTreeWidgetItem *item, int column)

void	itemEntered (QTreeWidgetItem *item, int column)

void	itemExpanded (QTreeWidgetItem *item)

void	itemPressed (QTreeWidgetItem *item, int column)

void	itemSelectionChanged ()

Public Signals inherited from QTreeView
void	collapsed (const QModelIndex &index)

void	expanded (const QModelIndex &index)

Public Signals inherited from QAbstractItemView
void	activated (const QModelIndex &index)

void	clicked (const QModelIndex &index)

void	doubleClicked (const QModelIndex &index)

void	entered (const QModelIndex &index)

void	iconSizeChanged (const QSize &size)

void	pressed (const QModelIndex &index)

void	viewportEntered ()

Public Signals inherited from QWidget
void	customContextMenuRequested (const QPoint &pos)

void	windowIconChanged (const QIcon &icon)

void	windowIconTextChanged (const QString &iconText)

void	windowTitleChanged (const QString &title)

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

void	objectNameChanged (const QString &objectName)

Public Slots
void	clear ()

void	collapseItem (const QTreeWidgetItem *item)

void	expandItem (const QTreeWidgetItem *item)

void	scrollToItem (const QTreeWidgetItem *item, QAbstractItemView::ScrollHint hint=EnsureVisible)

Public Slots inherited from QTreeView
void	collapse (const QModelIndex &index)

void	collapseAll ()

void	expand (const QModelIndex &index)

void	expandAll ()

void	expandToDepth (int depth)

void	hideColumn (int column)

void	resizeColumnToContents (int column)

void	showColumn (int column)

void	sortByColumn (int column)

Public Slots inherited from QAbstractItemView
void	clearSelection ()

void	edit (const QModelIndex &index)

virtual void	reset ()

void	scrollToBottom ()

void	scrollToTop ()

virtual void	selectAll ()

void	setCurrentIndex (const QModelIndex &index)

virtual void	setRootIndex (const QModelIndex &index)

void	update (const QModelIndex &index)

Public Slots inherited from QWidget
bool	close ()

void	hide ()

void	lower ()

void	raise ()

void	repaint ()

void	setDisabled (bool disable)

void	setEnabled (bool enable)

void	setFocus ()

void	setHidden (bool hidden)

void	setStyleSheet (const QString &styleSheet)

virtual void	setVisible (bool visible)

void	setWindowModified (bool modified)

void	setWindowTitle (const QString &title)

void	show ()

void	showFullScreen ()

void	showMaximized ()

void	showMinimized ()

void	showNormal ()

void	update ()

Public Slots inherited from QObject
void	deleteLater ()

Public Methods
	QTreeWidget (QWidget *parent=nullptr)

	~QTreeWidget ()

void	addTopLevelItem (QTreeWidgetItem *item)

void	addTopLevelItems (const QList< QTreeWidgetItem * > &items)

void	closePersistentEditor (QTreeWidgetItem *item, int column=0)

int	columnCount () const

int	currentColumn () const

QTreeWidgetItem *	currentItem () const

void	editItem (QTreeWidgetItem *item, int column=0)

QList< QTreeWidgetItem * >	findItems (const QString &text, Qt::MatchFlags flags, int column=0) const

QTreeWidgetItem *	headerItem () const

int	indexOfTopLevelItem (QTreeWidgetItem *item) const

void	insertTopLevelItem (int index, QTreeWidgetItem *item)

void	insertTopLevelItems (int index, const QList< QTreeWidgetItem * > &items)

QTreeWidgetItem *	invisibleRootItem () const

bool	isFirstItemColumnSpanned (const QTreeWidgetItem *item) const

bool	isItemExpanded (const QTreeWidgetItem *item) const

bool	isItemHidden (const QTreeWidgetItem *item) const

bool	isItemSelected (const QTreeWidgetItem *item) const

QTreeWidgetItem *	itemAbove (const QTreeWidgetItem *item) const

QTreeWidgetItem *	itemAt (const QPoint &p) const

QTreeWidgetItem *	itemAt (int x, int y) const

QTreeWidgetItem *	itemBelow (const QTreeWidgetItem *item) const

QWidget *	itemWidget (QTreeWidgetItem *item, int column) const

void	openPersistentEditor (QTreeWidgetItem *item, int column=0)

void	removeItemWidget (QTreeWidgetItem *item, int column)

QList< QTreeWidgetItem * >	selectedItems () const

void	setColumnCount (int columns)

void	setCurrentItem (QTreeWidgetItem *item)

void	setCurrentItem (QTreeWidgetItem *item, int column)

void	setCurrentItem (QTreeWidgetItem *item, int column, QItemSelectionModel::SelectionFlags command)

void	setFirstItemColumnSpanned (const QTreeWidgetItem *item, bool span)

void	setHeaderItem (QTreeWidgetItem *item)

void	setHeaderLabel (const QString &label)

void	setHeaderLabels (const QStringList &labels)

void	setItemExpanded (const QTreeWidgetItem *item, bool expand)

void	setItemHidden (const QTreeWidgetItem *item, bool hide)

void	setItemSelected (const QTreeWidgetItem *item, bool select)

void	setItemWidget (QTreeWidgetItem item, int column, QWidget widget)

void	setSelectionModel (QItemSelectionModel *selectionModel) override

int	sortColumn () const

void	sortItems (int column, Qt::SortOrder order)

QTreeWidgetItem *	takeTopLevelItem (int index)

QTreeWidgetItem *	topLevelItem (int index) const

int	topLevelItemCount () const

QRect	visualItemRect (const QTreeWidgetItem *item) const

Public Methods inherited from QTreeView
	QTreeView (QWidget *parent=nullptr)

	~QTreeView ()

bool	allColumnsShowFocus () const

int	autoExpandDelay () const

int	columnAt (int x) const

int	columnViewportPosition (int column) const

int	columnWidth (int column) const

void	dataChanged (const QModelIndex &topLeft, const QModelIndex &bottomRight, const QVector< int > &roles=QVector< int >()) override

bool	expandsOnDoubleClick () const

QHeaderView *	header () const

int	indentation () const

QModelIndex	indexAbove (const QModelIndex &index) const

QModelIndex	indexAt (const QPoint &point) const override

QModelIndex	indexBelow (const QModelIndex &index) const

bool	isAnimated () const

bool	isColumnHidden (int column) const

bool	isExpanded (const QModelIndex &index) const

bool	isFirstColumnSpanned (int row, const QModelIndex &parent) const

bool	isHeaderHidden () const

bool	isRowHidden (int row, const QModelIndex &parent) const

bool	isSortingEnabled () const

bool	itemsExpandable () const

void	keyboardSearch (const QString &search) override

void	reset () override

void	resetIndentation ()

bool	rootIsDecorated () const

void	scrollTo (const QModelIndex &index, ScrollHint hint=EnsureVisible) override

void	selectAll () override

void	setAllColumnsShowFocus (bool enable)

void	setAnimated (bool enable)

void	setAutoExpandDelay (int delay)

void	setColumnHidden (int column, bool hide)

void	setColumnWidth (int column, int width)

void	setExpanded (const QModelIndex &index, bool expanded)

void	setExpandsOnDoubleClick (bool enable)

void	setFirstColumnSpanned (int row, const QModelIndex &parent, bool span)

void	setHeader (QHeaderView *header)

void	setHeaderHidden (bool hide)

void	setIndentation (int i)

void	setItemsExpandable (bool enable)

void	setRootIndex (const QModelIndex &index) override

void	setRootIsDecorated (bool show)

void	setRowHidden (int row, const QModelIndex &parent, bool hide)

void	setSortingEnabled (bool enable)

void	setTreePosition (int logicalIndex)

void	setUniformRowHeights (bool uniform)

void	setWordWrap (bool on)

void	sortByColumn (int column, Qt::SortOrder order)

int	treePosition () const

bool	uniformRowHeights () const

QRect	visualRect (const QModelIndex &index) const override

bool	wordWrap () const

Public Methods inherited from QAbstractItemView
	QAbstractItemView (QWidget *parent=nullptr)

	~QAbstractItemView ()

bool	alternatingRowColors () const

int	autoScrollMargin () const

void	closePersistentEditor (const QModelIndex &index)

QModelIndex	currentIndex () const

Qt::DropAction	defaultDropAction () const

DragDropMode	dragDropMode () const

bool	dragDropOverwriteMode () const

bool	dragEnabled () const

EditTriggers	editTriggers () const

bool	hasAutoScroll () const

ScrollMode	horizontalScrollMode () const

QSize	iconSize () const

QWidget *	indexWidget (const QModelIndex &index) const

QVariant	inputMethodQuery (Qt::InputMethodQuery query) const override

QAbstractItemDelegate *	itemDelegate () const

QAbstractItemDelegate *	itemDelegate (const QModelIndex &index) const

QAbstractItemDelegate *	itemDelegateForColumn (int column) const

QAbstractItemDelegate *	itemDelegateForRow (int row) const

QAbstractItemModel *	model () const

void	openPersistentEditor (const QModelIndex &index)

QModelIndex	rootIndex () const

QAbstractItemView::SelectionBehavior	selectionBehavior () const

QAbstractItemView::SelectionMode	selectionMode () const

QItemSelectionModel *	selectionModel () const

void	setAlternatingRowColors (bool enable)

void	setAutoScroll (bool enable)

void	setAutoScrollMargin (int margin)

void	setDefaultDropAction (Qt::DropAction dropAction)

void	setDragDropMode (DragDropMode behavior)

void	setDragDropOverwriteMode (bool overwrite)

void	setDragEnabled (bool enable)

void	setDropIndicatorShown (bool enable)

void	setEditTriggers (EditTriggers triggers)

void	setHorizontalScrollMode (ScrollMode mode)

void	setIconSize (const QSize &size)

void	setIndexWidget (const QModelIndex &index, QWidget *widget)

void	setItemDelegate (QAbstractItemDelegate *delegate)

void	setItemDelegateForColumn (int column, QAbstractItemDelegate *delegate)

void	setItemDelegateForRow (int row, QAbstractItemDelegate *delegate)

void	setSelectionBehavior (QAbstractItemView::SelectionBehavior behavior)

void	setSelectionMode (QAbstractItemView::SelectionMode mode)

void	setTabKeyNavigation (bool enable)

void	setTextElideMode (Qt::TextElideMode mode)

void	setVerticalScrollMode (ScrollMode mode)

bool	showDropIndicator () const

QSize	sizeHintForIndex (const QModelIndex &index) const

virtual int	sizeHintForRow (int row) const

bool	tabKeyNavigation () const

Qt::TextElideMode	textElideMode () const

ScrollMode	verticalScrollMode () const

Public Methods inherited from QAbstractScrollArea
	QAbstractScrollArea (QWidget *parent=nullptr)

	~QAbstractScrollArea ()

void	addScrollBarWidget (QWidget *widget, Qt::Alignment alignment)

QWidget *	cornerWidget () const

QScrollBar *	horizontalScrollBar () const

Qt::ScrollBarPolicy	horizontalScrollBarPolicy () const

QSize	maximumViewportSize () const

QSize	minimumSizeHint () const override

QWidgetList	scrollBarWidgets (Qt::Alignment alignment)

void	setCornerWidget (QWidget *widget)

void	setHorizontalScrollBar (QScrollBar *scrollBar)

void	setHorizontalScrollBarPolicy (Qt::ScrollBarPolicy policy)

void	setSizeAdjustPolicy (SizeAdjustPolicy policy)

virtual void	setupViewport (QWidget *viewport)

void	setVerticalScrollBar (QScrollBar *scrollBar)

void	setVerticalScrollBarPolicy (Qt::ScrollBarPolicy policy)

void	setViewport (QWidget *widget)

SizeAdjustPolicy	sizeAdjustPolicy () const

QSize	sizeHint () const override

QScrollBar *	verticalScrollBar () const

Qt::ScrollBarPolicy	verticalScrollBarPolicy () const

QWidget *	viewport () const

Public Methods inherited from QFrame
	QFrame (QWidget *parent=nullptr, Qt::WindowFlags flags=Qt::EmptyFlag)

	~QFrame ()

QRect	frameRect () const

Shadow	frameShadow () const

Shape	frameShape () const

int	frameStyle () const

int	frameWidth () const

int	lineWidth () const

int	midLineWidth () const

void	setFrameRect (const QRect &rect)

void	setFrameShadow (Shadow value)

void	setFrameShape (Shape value)

void	setFrameStyle (int style)

void	setLineWidth (int width)

void	setMidLineWidth (int width)

QSize	sizeHint () const override

Public Methods inherited from QWidget
	QWidget (QWidget *parent=nullptr, Qt::WindowFlags flags=Qt::EmptyFlag)

	~QWidget ()

bool	acceptDrops () const

QString	accessibleDescription () const

QString	accessibleName () const

QList< QAction * >	actions () const

void	activateWindow ()

void	addAction (QAction *action)

void	addActions (const QList< QAction * > &actions)

void	adjustSize ()

bool	autoFillBackground () const

QPalette::ColorRole	backgroundRole () const

QBackingStore *	backingStore () const

QSize	baseSize () const

QWidget *	childAt (const QPoint &position) const

QWidget *	childAt (int x, int y) const

QRect	childrenRect () const

QRegion	childrenRegion () const

void	clearFocus ()

void	clearMask ()

QMargins	contentsMargins () const

QRect	contentsRect () const

Qt::ContextMenuPolicy	contextMenuPolicy () const

QCursor	cursor () const

WId	effectiveWinId () const

void	ensurePolished () const

Qt::FocusPolicy	focusPolicy () const

QWidget *	focusProxy () const

QWidget *	focusWidget () const

const QFont &	font () const

QFontInfo	fontInfo () const

QFontMetrics	fontMetrics () const

QPalette::ColorRole	foregroundRole () const

QRect	frameGeometry () const

QSize	frameSize () const

const QRect &	geometry () const

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

QPixmap	grab (const QRect &rectangle=QRect (QPoint (0, 0), QSize (-1,-1)))

void	grabGesture (Qt::GestureType gestureType, Qt::GestureFlags flags=Qt::GestureFlags ())

void	grabKeyboard ()

void	grabMouse ()

void	grabMouse (const QCursor &cursor)

int	grabShortcut (const QKeySequence &key, Qt::ShortcutContext context=Qt::WindowShortcut)

QGraphicsEffect *	graphicsEffect () const

QGraphicsProxyWidget *	graphicsProxyWidget () const

bool	hasEditFocus () const

bool	hasFocus () const

virtual bool	hasHeightForWidth () const

bool	hasMouseTracking () const

int	height () const

virtual int	heightForWidth (int width) const

Qt::InputMethodHints	inputMethodHints () const

void	insertAction (QAction before, QAction action)

void	insertActions (QAction before, QList< QAction > actions)

bool	isActiveWindow () const

bool	isAncestorOf (const QWidget *child) const

bool	isEnabled () const

bool	isEnabledTo (const QWidget *parent) const

bool	isEnabledToTLW () const

bool	isFullScreen () const

bool	isHidden () const

bool	isMaximized () const

bool	isMinimized () const

bool	isModal () const

bool	isTopLevel () const

bool	isVisible () const

bool	isVisibleTo (const QWidget *parent) const

bool	isWindow () const

bool	isWindowModified () const

QLayout *	layout () const

Qt::LayoutDirection	layoutDirection () const

QLocale	locale () const

QPoint	mapFrom (const QWidget *parent, const QPoint &pos) const

QPoint	mapFromGlobal (const QPoint &pos) const

QPoint	mapFromParent (const QPoint &pos) const

QPoint	mapTo (const QWidget *parent, const QPoint &pos) const

QPoint	mapToGlobal (const QPoint &pos) const

QPoint	mapToParent (const QPoint &pos) const

QRegion	mask () const

int	maximumHeight () const

QSize	maximumSize () const

int	maximumWidth () const

int	minimumHeight () const

QSize	minimumSize () const

int	minimumWidth () const

void	move (const QPoint &point)

void	move (int x, int y)

QWidget *	nativeParentWidget () const

QWidget *	nextInFocusChain () const

QRect	normalGeometry () const

void	overrideWindowFlags (Qt::WindowFlags flags)

QPaintEngine *	paintEngine () const override

const QPalette &	palette () const

QWidget *	parentWidget () const

QPoint	pos () const

QWidget *	previousInFocusChain () const

QRect	rect () const

void	releaseKeyboard ()

void	releaseMouse ()

void	releaseShortcut (int id)

void	removeAction (QAction *action)

void	render (QPaintDevice *target, const QPoint &targetOffset=QPoint (), const QRegion &sourceRegion=QRegion (), RenderFlags renderFlags=RenderFlags (DrawWindowBackground\|DrawChildren))

void	render (QPainter *painter, const QPoint &targetOffset=QPoint (), const QRegion &sourceRegion=QRegion (), RenderFlags renderFlags=RenderFlags (DrawWindowBackground\|DrawChildren))

void	repaint (const QRect &rect)

void	repaint (const QRegion &region)

void	repaint (int x, int y, int w, int h)

void	resize (const QSize &size)

void	resize (int w, int h)

bool	restoreGeometry (const QByteArray &geometry)

QByteArray	saveGeometry () const

void	scroll (int dx, int dy)

void	scroll (int dx, int dy, const QRect &rect)

void	setAcceptDrops (bool on)

void	setAccessibleDescription (const QString &description)

void	setAccessibleName (const QString &name)

void	setAttribute (Qt::WidgetAttribute attribute, bool enable=true)

void	setAutoFillBackground (bool enable)

void	setBackgroundRole (QPalette::ColorRole role)

void	setBaseSize (const QSize &size)

void	setBaseSize (int basew, int baseh)

void	setContentsMargins (const QMargins &margins)

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

void	setContextMenuPolicy (Qt::ContextMenuPolicy policy)

void	setCursor (const QCursor &cursor)

void	setEditFocus (bool enable)

void	setFixedHeight (int h)

void	setFixedSize (const QSize &size)

void	setFixedSize (int w, int h)

void	setFixedWidth (int w)

void	setFocus (Qt::FocusReason reason)

void	setFocusPolicy (Qt::FocusPolicy policy)

void	setFocusProxy (QWidget *widget)

void	setFont (const QFont &font)

void	setForegroundRole (QPalette::ColorRole role)

void	setGeometry (const QRect &rect)

void	setGeometry (int x, int y, int w, int h)

void	setGraphicsEffect (QGraphicsEffect *effect)

void	setInputMethodHints (Qt::InputMethodHints hints)

void	setLayout (QLayout *layout)

void	setLayoutDirection (Qt::LayoutDirection direction)

void	setLocale (const QLocale &locale)

void	setMask (const QBitmap &bitmap)

void	setMask (const QRegion &region)

void	setMaximumHeight (int maxh)

void	setMaximumSize (const QSize &size)

void	setMaximumSize (int maxw, int maxh)

void	setMaximumWidth (int maxw)

void	setMinimumHeight (int minh)

void	setMinimumSize (const QSize &size)

void	setMinimumSize (int minw, int minh)

void	setMinimumWidth (int minw)

void	setMouseTracking (bool enable)

void	setPalette (const QPalette &palette)

void	setParent (QWidget *parent)

void	setParent (QWidget *parent, Qt::WindowFlags flags)

void	setShortcutAutoRepeat (int id, bool enable=true)

void	setShortcutEnabled (int id, bool enable=true)

void	setSizeIncrement (const QSize &size)

void	setSizeIncrement (int w, int h)

void	setSizePolicy (QSizePolicy policy)

void	setSizePolicy (QSizePolicy::Policy horizontal, QSizePolicy::Policy vertical)

void	setStatusTip (const QString &data)

void	setStyle (QStyle *style)

void	setToolTip (const QString &data)

void	setToolTipDuration (int msec)

void	setUpdatesEnabled (bool enable)

void	setWhatsThis (const QString &str)

void	setWindowFilePath (const QString &filePath)

void	setWindowFlags (Qt::WindowFlags flags)

void	setWindowIcon (const QIcon &icon)

void	setWindowModality (Qt::WindowModality windowModality)

void	setWindowOpacity (qreal level)

void	setWindowRole (const QString &role)

void	setWindowState (Qt::WindowStates windowState)

QSize	size () const

QSize	sizeIncrement () const

QSizePolicy	sizePolicy () const

void	stackUnder (QWidget *widget)

QString	statusTip () const

QStyle *	style () const

QString	styleSheet () const

bool	testAttribute (Qt::WidgetAttribute attribute) const

QString	toolTip () const

int	toolTipDuration () const

QWidget *	topLevelWidget () const

bool	underMouse () const

void	ungrabGesture (Qt::GestureType gestureType)

void	unsetCursor ()

void	unsetLayoutDirection ()

void	unsetLocale ()

void	update (const QRect &rect)

void	update (const QRegion &region)

void	update (int x, int y, int w, int h)

void	updateGeometry ()

bool	updatesEnabled () const

QRegion	visibleRegion () const

QString	whatsThis () const

int	width () const

QWidget *	window () const

QString	windowFilePath () const

Qt::WindowFlags	windowFlags () const

QWindow *	windowHandle () const

QIcon	windowIcon () const

Qt::WindowModality	windowModality () const

qreal	windowOpacity () const

QString	windowRole () const

Qt::WindowStates	windowState () const

QString	windowTitle () const

Qt::WindowType	windowType () const

WId	winId () const

int	x () const

int	y () const

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 QPaintDevice
virtual	~QPaintDevice ()

int	colorCount () const

int	depth () const

int	devicePixelRatio () const

qreal	devicePixelRatioF () const

int	height () const

int	heightMM () const

int	logicalDpiX () const

int	logicalDpiY () const

bool	paintingActive () const

int	physicalDpiX () const

int	physicalDpiY () const

int	width () const

int	widthMM () const

Protected Methods
void	dropEvent (QDropEvent *event) override

virtual bool	dropMimeData (QTreeWidgetItem parent, int index, const QMimeData data, Qt::DropAction action)

bool	event (QEvent *event) override

QModelIndex	indexFromItem (QTreeWidgetItem *item, int column=0) const

QTreeWidgetItem *	itemFromIndex (const QModelIndex &index) const

virtual QMimeData *	mimeData (const QList< QTreeWidgetItem * > &items) const

virtual QStringList	mimeTypes () const

virtual Qt::DropActions	supportedDropActions () const

Protected Methods inherited from QTreeView
void	currentChanged (const QModelIndex &current, const QModelIndex &previous) override

void	dragMoveEvent (QDragMoveEvent *event) override

virtual void	drawBranches (QPainter *painter, const QRect &rect, const QModelIndex &index) const

virtual void	drawRow (QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const

void	drawTree (QPainter *painter, const QRegion &region) const

int	horizontalOffset () const override

void	horizontalScrollbarAction (int action) override

int	indexRowSizeHint (const QModelIndex &index) const

bool	isIndexHidden (const QModelIndex &index) const override

void	keyPressEvent (QKeyEvent *event) override

void	mouseDoubleClickEvent (QMouseEvent *event) override

void	mouseMoveEvent (QMouseEvent *event) override

void	mousePressEvent (QMouseEvent *event) override

void	mouseReleaseEvent (QMouseEvent *event) override

QModelIndex	moveCursor (CursorAction cursorAction, Qt::KeyboardModifiers modifiers) override

void	paintEvent (QPaintEvent *event) override

int	rowHeight (const QModelIndex &index) const

void	rowsAboutToBeRemoved (const QModelIndex &parent, int start, int end) override

void	rowsInserted (const QModelIndex &parent, int start, int end) override

void	scrollContentsBy (int dx, int dy) override

QModelIndexList	selectedIndexes () const override

void	selectionChanged (const QItemSelection &selected, const QItemSelection &deselected) override

void	setSelection (const QRect &rect, QItemSelectionModel::SelectionFlags command) override

int	sizeHintForColumn (int column) const override

void	timerEvent (QTimerEvent *event) override

void	updateGeometries () override

int	verticalOffset () const override

bool	viewportEvent (QEvent *event) override

QSize	viewportSizeHint () const override

QRegion	visualRegionForSelection (const QItemSelection &selection) const override

Protected Methods inherited from QAbstractItemView
QPoint	dirtyRegionOffset () const

void	dragEnterEvent (QDragEnterEvent *event) override

void	dragLeaveEvent (QDragLeaveEvent *event) override

DropIndicatorPosition	dropIndicatorPosition () const

virtual bool	edit (const QModelIndex &index, EditTrigger trigger, QEvent *event)

bool	event (QEvent *event) override

void	executeDelayedItemsLayout ()

void	focusInEvent (QFocusEvent *event) override

bool	focusNextPrevChild (bool next) override

void	focusOutEvent (QFocusEvent *event) override

int	horizontalStepsPerItem () const

void	inputMethodEvent (QInputMethodEvent *event) override

void	resizeEvent (QResizeEvent *event) override

void	scheduleDelayedItemsLayout ()

void	scrollDirtyRegion (int dx, int dy)

virtual QItemSelectionModel::SelectionFlags	selectionCommand (const QModelIndex &index, const QEvent *event=nullptr) const

void	setDirtyRegion (const QRegion &region)

void	setHorizontalStepsPerItem (int steps)

void	setState (State state)

void	setVerticalStepsPerItem (int steps)

virtual void	startDrag (Qt::DropActions supportedActions)

State	state () const

void	timerEvent (QTimerEvent *event) override

int	verticalStepsPerItem () const

virtual QStyleOptionViewItem	viewOptions () const

Protected Methods inherited from QAbstractScrollArea
void	contextMenuEvent (QContextMenuEvent *event) override

void	dragEnterEvent (QDragEnterEvent *event) override

void	dragLeaveEvent (QDragLeaveEvent *event) override

void	dragMoveEvent (QDragMoveEvent *event) override

void	dropEvent (QDropEvent *event) override

bool	event (QEvent *event) override

void	keyPressEvent (QKeyEvent *event) override

void	mouseDoubleClickEvent (QMouseEvent *event) override

void	mouseMoveEvent (QMouseEvent *event) override

void	mousePressEvent (QMouseEvent *event) override

void	mouseReleaseEvent (QMouseEvent *event) override

void	paintEvent (QPaintEvent *event) override

void	resizeEvent (QResizeEvent *event) override

void	setViewportMargins (const QMargins &margins)

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

QMargins	viewportMargins () const

void	wheelEvent (QWheelEvent *event) override

Protected Methods inherited from QFrame
void	changeEvent (QEvent *event) override

void	drawFrame (QPainter *painter)

bool	event (QEvent *event) override

void	initStyleOption (QStyleOptionFrame *option) const

void	paintEvent (QPaintEvent *event) override

Protected Methods inherited from QWidget
virtual void	actionEvent (QActionEvent *event)

virtual void	closeEvent (QCloseEvent *event)

void	create (WId window=0, bool initializeWindow=true, bool destroyOldWindow=true)

void	destroy (bool destroyWindow=true, bool destroySubWindows=true)

virtual void	enterEvent (QEvent *event)

bool	event (QEvent *event) override

bool	focusNextChild ()

bool	focusPreviousChild ()

virtual void	hideEvent (QHideEvent *event)

void	initPainter (QPainter *painter) const override

virtual void	keyReleaseEvent (QKeyEvent *event)

virtual void	leaveEvent (QEvent *event)

int	metric (PaintDeviceMetric metric) const override

virtual void	moveEvent (QMoveEvent *event)

virtual bool	nativeEvent (const QByteArray &eventType, void message, long result)

virtual void	showEvent (QShowEvent *event)

virtual void	tabletEvent (QTabletEvent *event)

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)

Protected Methods inherited from QPaintDevice
	QPaintDevice ()

Properties
	columnCount

	topLevelItemCount

Properties inherited from QTreeView
	allColumnsShowFocus

	animated

	autoExpandDelay

	expandsOnDoubleClick

	headerHidden

	indentation

	itemsExpandable

	rootIsDecorated

	sortingEnabled

	uniformRowHeights

	wordWrap

Properties inherited from QAbstractItemView
	alternatingRowColors

	autoScroll

	autoScrollMargin

	defaultDropAction

	dragDropMode

	dragDropOverwriteMode

	dragEnabled

	editTriggers

	horizontalScrollMode

	iconSize

	selectionBehavior

	selectionMode

	showDropIndicator

	tabKeyNavigation

	textElideMode

	verticalScrollMode

Properties inherited from QAbstractScrollArea
	horizontalScrollBarPolicy

	verticalScrollBarPolicy

Properties inherited from QFrame
	frameRect

	frameShadow

	frameShape

	frameWidth

	lineWidth

	midLineWidth

Properties inherited from QWidget
	acceptDrops

	accessibleDescription

	accessibleName

	autoFillBackground

	baseSize

	childrenRect

	childrenRegion

	contextMenuPolicy

	cursor

	enabled

	focus

	focusPolicy

	font

	frameGeometry

	frameSize

	fullScreen

	geometry

	height

	inputMethodHints

	isActiveWindow

	layoutDirection

	locale

	maximized

	maximumHeight

	maximumSize

	maximumWidth

	minimized

	minimumHeight

	minimumSize

	minimumSizeHint

	minimumWidth

	modal

	mouseTracking

	normalGeometry

	palette

	pos

	rect

	size

	sizeHint

	sizeIncrement

	sizePolicy

	statusTip

	styleSheet

	toolTip

	updatesEnabled

	visible

	whatsThis

	width

	windowFilePath

	windowFlags

	windowIcon

	windowIconText

	windowModality

	windowModified

	windowOpacity

	windowTitle

	x

	y

Properties inherited from QObject
	objectName

Friends
class	QTreeWidgetItem

Additional Inherited Members
Public Typedefs inherited from QAbstractItemView
using	EditTriggers = QFlags< EditTrigger >

Public Typedefs inherited from QWidget
using	RenderFlags = QFlags< RenderFlag >

Public Types inherited from QAbstractItemView
enum	DragDropMode

enum	EditTrigger

enum	ScrollHint

enum	ScrollMode

enum	SelectionBehavior

enum	SelectionMode

Public Types inherited from QFrame
enum	Shadow

enum	Shape

enum	StyleMask

Public Types inherited from QWidget
enum	RenderFlag

Public Types inherited from QPaintDevice
enum	PaintDeviceMetric

Static Public Methods inherited from QWidget
static QWidget *	createWindowContainer (QWindow window, QWidget parent=nullptr, Qt::WindowFlags flags=Qt::EmptyFlag)

static QWidget *	find (WId id)

static QWidget *	keyboardGrabber ()

static QWidget *	mouseGrabber ()

static void	setTabOrder (QWidget firstWidget, QWidget secondWidget)

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 Types inherited from QAbstractItemView
enum	CursorAction

enum	DropIndicatorPosition

enum	State

Protected Slots inherited from QTreeView
void	columnCountChanged (int oldCount, int newCount)

void	columnMoved ()

void	columnResized (int column, int oldSize, int newSize)

void	rowsRemoved (const QModelIndex &parent, int start, int end)

Protected Slots inherited from QAbstractItemView
virtual void	closeEditor (QWidget *editor, QAbstractItemDelegate::EndEditHint hint)

virtual void	commitData (QWidget *editor)

virtual void	currentChanged (const QModelIndex &current, const QModelIndex &previous)

virtual void	dataChanged (const QModelIndex &topLeft, const QModelIndex &bottomRight, const QVector< int > &roles=QVector< int >())

virtual void	editorDestroyed (QObject *editor)

virtual void	rowsAboutToBeRemoved (const QModelIndex &parent, int start, int end)

virtual void	rowsInserted (const QModelIndex &parent, int start, int end)

virtual void	selectionChanged (const QItemSelection &selected, const QItemSelection &deselected)

virtual void	updateGeometries ()

Protected Slots inherited from QWidget
void	updateMicroFocus ()

Related Functions inherited from QWidget
	QWidgetList

	WId

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

	QObjectList

Detailed Description

The QTreeWidget class provides a tree view which uses a predefined tree model which can not be changed. This class offers a simple API and is less flexible than its counter part Model/View QTreeView class. In most cases using QTreeView with a standard item model will be a better approach.

Example

The following example shows how to create a tree widget.

QTreeWidget *treeWidget = new QTreeWidget();
treeWidget->setColumnCount(1);
 
QList<QTreeWidgetItem *> items;
 
for (int i = 0; i < 10; ++i) {
   items.append(new QTreeWidgetItem((QTreeWidget*)0, QStringList(QString("item: %1").formatArg(i))));
}
 
treeWidget->insertTopLevelItems(0, items);

Before items can be added to the tree widget the number of columns must be set with setColumnCount(). This allows each item to have one or more labels or other decorations. The number of columns in use can be found with the columnCount() method.

The tree can have a header that contains a section for each column in the widget. It is easiest to set up the labels for each section by supplying a list of strings with setHeaderLabels(), but a custom header can be constructed with a QTreeWidgetItem and inserted into the tree with the setHeaderItem() method.

The items in the tree can be sorted by column according to a predefined sort order. If sorting is enabled the user can sort the items by clicking on a column header. Sorting can be enabled or disabled by calling setSortingEnabled(). The isSortingEnabled() function indicates whether sorting is enabled.

See also: QTreeWidgetItem, QTreeWidgetItemIterator, QTreeView, Model/View Architecture

Constructor & Destructor Documentation

QTreeWidget::QTreeWidget ( QWidget * parent = nullptr )

explicit

Constructs a tree widget with the given parent.

QTreeWidget::~QTreeWidget ( )

Destroys the tree widget and all its items.

Method Documentation

void QTreeWidget::addTopLevelItem ( QTreeWidgetItem * item )

Appends the item as a top level item in the widget.

See also: insertTopLevelItem()

void QTreeWidget::addTopLevelItems ( const QList< QTreeWidgetItem * > & items )

Appends the list of items as a top level items in the widget.

See also: insertTopLevelItems()

void QTreeWidget::clear ( )

slot

Clears the tree widget by removing all of its items and selections.

Since each item is removed from the tree widget before being deleted, the return value of QTreeWidgetItem::treeWidget() will be invalid when called from an item's destructor.

See also: takeTopLevelItem(), topLevelItemCount(), columnCount()

void QTreeWidget::closePersistentEditor	(	QTreeWidgetItem *	item,
		int	column = `0`
	)

Closes the persistent editor for the item in the given column. This method has no effect if no persistent editor is open for this combination of item and column.

See also: openPersistentEditor()

void QTreeWidget::collapseItem ( const QTreeWidgetItem * item )

slot

Closes the item. This causes the tree containing the child items to be collapsed.

See also: expandItem(), currentItem(), itemAt(), topLevelItem()

int QTreeWidget::columnCount ( ) const

Returns the value of the property.

int QTreeWidget::currentColumn ( ) const

Returns the current column in the tree widget.

See also: setCurrentItem(), columnCount()

QTreeWidgetItem * QTreeWidget::currentItem ( ) const

Returns the current item in the tree widget.

See also: setCurrentItem(), currentItemChanged()

void QTreeWidget::currentItemChanged	(	QTreeWidgetItem *	current,
		QTreeWidgetItem *	previous
	)

signal

This signal is emitted when the current item changes. The current item is specified by current which replaces the previous current item.

See also: setCurrentItem()

void QTreeWidget::dropEvent ( QDropEvent * event )

overrideprotectedvirtual

Reimplemented from QAbstractItemView::dropEvent()

bool QTreeWidget::dropMimeData	(	QTreeWidgetItem *	parent,
		int	index,
		const QMimeData *	data,
		Qt::DropAction	action
	)

protectedvirtual

Handles the data supplied by a drag and drop operation that ended with the given action in the index in the given parent item. The default implementation returns true if the drop was successfully handled by decoding the mime data and inserting it into the model, otherwise it returns false.

See also: supportedDropActions()

void QTreeWidget::editItem	(	QTreeWidgetItem *	item,
		int	column = `0`
	)

Starts editing the item in the given column, if it is editable.

bool QTreeWidget::event ( QEvent * event )

overrideprotected

Reimplemented from QAbstractItemView::event()

void QTreeWidget::expandItem ( const QTreeWidgetItem * item )

slot

Expands the given item. This causes the tree containing the child items to be expanded.

See also: collapseItem(), currentItem(), itemAt(), topLevelItem(), itemExpanded()

QList< QTreeWidgetItem * > QTreeWidget::findItems	(	const QString &	text,
		Qt::MatchFlags	flags,
		int	column = `0`
	)		const

Returns a list of items which match the given text, using the given flags, in the given column.

QTreeWidgetItem * QTreeWidget::headerItem ( ) const

Returns the item used for the tree widget's header.

See also: setHeaderItem()

QModelIndex QTreeWidget::indexFromItem	(	QTreeWidgetItem *	item,
		int	column = `0`
	)		const

protected

Returns the QModelIndex associated with the given item in the given column.

See also: itemFromIndex(), topLevelItem()

int QTreeWidget::indexOfTopLevelItem ( QTreeWidgetItem * item ) const

Returns the index of the given top level item or -1 if the item can not be found.

See also: sortItems(), topLevelItemCount()

void QTreeWidget::insertTopLevelItem	(	int	index,
		QTreeWidgetItem *	item
	)

Inserts the item at index in the top level in the view. If the item has already been inserted it will not be added again.

See also: addTopLevelItem(), columnCount()

void QTreeWidget::insertTopLevelItems	(	int	index,
		const QList< QTreeWidgetItem * > &	items
	)

Inserts the list of items at index in the top level in the view. If the item has already been inserted it will not be added again.

See also: addTopLevelItems()

QTreeWidgetItem * QTreeWidget::invisibleRootItem ( ) const

Returns the invisible root item. The invisible root item is the parent for all visible top level items.

Note: Calling index() on this root item is not valid.

bool QTreeWidget::isFirstItemColumnSpanned ( const QTreeWidgetItem * item ) const

Returns true if the given item is set to show only one section over all columns, otherwise returns false.

See also: setFirstItemColumnSpanned()

bool QTreeWidget::isItemExpanded ( const QTreeWidgetItem * item ) const

deprecated

Deprecated:: Use QTreeWidgetItem::isExpanded() instead.

Returns true if the given item is open, otherwise returns false.

See also: itemExpanded()

bool QTreeWidget::isItemHidden ( const QTreeWidgetItem * item ) const

deprecated

Deprecated:: Use QTreeWidgetItem::isHidden() instead.

Returns true if the item is explicitly hidden, otherwise returns false.

bool QTreeWidget::isItemSelected ( const QTreeWidgetItem * item ) const

deprecated

Deprecated:: Use QTreeWidgetItem::isSelected() instead.

Returns true if the item is selected, otherwise returns false.

See also: itemSelectionChanged()

QTreeWidgetItem * QTreeWidget::itemAbove ( const QTreeWidgetItem * item ) const

Returns the item above the given item.

void QTreeWidget::itemActivated	(	QTreeWidgetItem *	item,
		int	column
	)

signal

This signal is emitted when the user activates an item by clicking the mouse or pressing the enter key. The given item indicates which item was clicked or a nullptr if there is no valid item. The column indicates the column number of the item which was clicked or -1 if no item was clicked.

QTreeWidgetItem * QTreeWidget::itemAt ( const QPoint & p ) const

Returns a pointer to the item at the coordinates p. The coordinates are relative to the tree widget's viewport().

See also: visualItemRect()

QTreeWidgetItem * QTreeWidget::itemAt	(	int	x,
		int	y
	)		const

inline

Returns a pointer to the item at the coordinates (x, y). The coordinates are relative to the tree widget's viewport().

QTreeWidgetItem * QTreeWidget::itemBelow ( const QTreeWidgetItem * item ) const

Returns the item displayed below the given item.

void QTreeWidget::itemChanged	(	QTreeWidgetItem *	item,
		int	column
	)

signal

This signal is emitted when the contents of the column in the specified item changes.

void QTreeWidget::itemClicked	(	QTreeWidgetItem *	item,
		int	column
	)

signal

This signal is emitted when the user clicks inside the widget. The specified item is the item that was clicked. The column is the item's column that was clicked. If no item was clicked, no signal will be emitted.

void QTreeWidget::itemCollapsed ( QTreeWidgetItem * item )

signal

This signal is emitted when the specified item is collapsed so that none of its children are displayed.

See also: QTreeWidgetItem::isExpanded(), itemExpanded(), collapseItem()

void QTreeWidget::itemDoubleClicked	(	QTreeWidgetItem *	item,
		int	column
	)

signal

This signal is emitted when the user double clicks inside the widget. The given item is the item which was clicked or a nullptr if no item was clicked. The column is the item's column that was clicked.

void QTreeWidget::itemEntered	(	QTreeWidgetItem *	item,
		int	column
	)

signal

This signal is emitted when the mouse cursor enters an item over the specified column. QTreeWidget mouse tracking needs to be enabled for this feature to work.

void QTreeWidget::itemExpanded ( QTreeWidgetItem * item )

signal

This signal is emitted when the specified item is expanded so all of its children are displayed.

See also: setItemExpanded(), QTreeWidgetItem::isExpanded(), itemCollapsed(), expandItem()

QTreeWidgetItem * QTreeWidget::itemFromIndex ( const QModelIndex & index ) const

protected

Returns a pointer to the QTreeWidgetItem associated with the given index.

See also: indexFromItem()

void QTreeWidget::itemPressed	(	QTreeWidgetItem *	item,
		int	column
	)

signal

This signal is emitted when the user presses a mouse button inside the widget. The specified item is the item that was clicked or a nullptr if no item was clicked. The column is the item's column that was clicked or -1 if no item was clicked.

void QTreeWidget::itemSelectionChanged ( )

signal

This signal is emitted when the selection changes in the tree widget. The current selection can be found with selectedItems().

QWidget * QTreeWidget::itemWidget	(	QTreeWidgetItem *	item,
		int	column
	)		const

Returns the widget displayed in the location specified by item and the given column. The tree takes ownership of the widget.

See also: setItemWidget()

QMimeData * QTreeWidget::mimeData ( const QList< QTreeWidgetItem * > & items ) const

protectedvirtual

Returns an object that contains a serialized description of the specified items. The format used to describe the items is obtained from the mimeTypes() method.

If the list of items is empty then a nullptr is returned.

QStringList QTreeWidget::mimeTypes ( ) const

protectedvirtual

Returns a list of MIME types that can be used to describe a list of tree widget items.

See also: mimeData()

void QTreeWidget::openPersistentEditor	(	QTreeWidgetItem *	item,
		int	column = `0`
	)

Opens a persistent editor for the item in the given column.

See also: closePersistentEditor()

void QTreeWidget::removeItemWidget	(	QTreeWidgetItem *	item,
		int	column
	)

inline

Removes the widget set in the given item in the given column.

void QTreeWidget::scrollToItem	(	const QTreeWidgetItem *	item,
		QAbstractItemView::ScrollHint	hint = `EnsureVisible`
	)

slot

Ensures that the item is visible, scrolling the view if necessary using the specified hint.

See also: currentItem(), itemAt(), topLevelItem()

QList< QTreeWidgetItem * > QTreeWidget::selectedItems ( ) const

Returns a list of all selected non-hidden items.

See also: itemSelectionChanged()

void QTreeWidget::setColumnCount ( int columns )

Sets the value of the property to columns.

void QTreeWidget::setCurrentItem ( QTreeWidgetItem * item )

Sets the current item in the tree widget. Unless the selection mode is NoSelection, the item is also selected.

See also: currentItem(), currentItemChanged()

void QTreeWidget::setCurrentItem	(	QTreeWidgetItem *	item,
		int	column
	)

Sets the current item to the given item in the specified column.

See also: currentItem()

void QTreeWidget::setCurrentItem	(	QTreeWidgetItem *	item,
		int	column,
		QItemSelectionModel::SelectionFlags	command
	)

Sets the current item to the given item in the specified column, using the given command.

See also: currentItem()

void QTreeWidget::setFirstItemColumnSpanned	(	const QTreeWidgetItem *	item,
		bool	span
	)

Sets the given item to only show one section for all columns if span is true, otherwise the item will show one section per column.

See also: isFirstItemColumnSpanned()

void QTreeWidget::setHeaderItem ( QTreeWidgetItem * item )

Sets the header item for the tree widget. The label for each column in the header is supplied by the corresponding label in the item. The tree widget takes ownership of the item.

See also: headerItem(), setHeaderLabels()

void QTreeWidget::setHeaderLabel ( const QString & label )

inline

Equivalent to calling setHeaderLabels(QStringList(label)).

void QTreeWidget::setHeaderLabels ( const QStringList & labels )

Adds a column in the header for each item in the labels list and sets the label for each column. This method will not remove existing columns.

See also: setHeaderItem(), setHeaderLabel()

void QTreeWidget::setItemExpanded	(	const QTreeWidgetItem *	item,
		bool	expand
	)

deprecated

Deprecated:: Use QTreeWidgetItem::setExpanded() instead.

Sets the item referred to by item to either closed or opened, depending on the value of expand.

See also: expandItem(), collapseItem(), itemExpanded()

void QTreeWidget::setItemHidden	(	const QTreeWidgetItem *	item,
		bool	hide
	)

deprecated

Deprecated:: Use QTreeWidgetItem::setHidden() instead.

Hides the given item if hide is true, otherwise shows the item.

See also: isItemHidden(), itemChanged()

void QTreeWidget::setItemSelected	(	const QTreeWidgetItem *	item,
		bool	select
	)

deprecated

Deprecated:: Use QTreeWidgetItem::setSelected() instead.

If select is true the given item is selected, otherwise it is deselected.

See also: isItemSelected(), itemSelectionChanged()

void QTreeWidget::setItemWidget	(	QTreeWidgetItem *	item,
		int	column,
		QWidget *	widget
	)

Sets the given widget to be displayed in the cell specified by the given item and column. The given widget's autoFillBackground property must be set to true, otherwise the widget's background will be transparent, showing both the model data and the tree widget item. This method should only be used to display static content in the place of a tree widget item. If you want to display custom dynamic content or implement a custom editor widget, use QTreeView and subclass QItemDelegate instead.

This method can not be called before the item hierarchy has been set up. The QTreeWidgetItem which contains the QTreeWidgets must be added to the view before calling this method. The QTreeWidget takes ownership of the QWidget.

See also: itemWidget(), Delegate Classes

void QTreeWidget::setSelectionModel ( QItemSelectionModel * selectionModel )

overridevirtual

Reimplemented from QTreeView::setSelectionModel()

int QTreeWidget::sortColumn ( ) const

Returns the column used to sort the contents of the widget.

See also: sortItems()

void QTreeWidget::sortItems	(	int	column,
		Qt::SortOrder	order
	)

Sorts the items in the widget in the specified order by the values in the given column.

See also: sortColumn()

Qt::DropActions QTreeWidget::supportedDropActions ( ) const

protectedvirtual

Returns the drop actions supported by this view.

See also: Qt::DropActions

QTreeWidgetItem * QTreeWidget::takeTopLevelItem ( int index )

Removes the top level item at the given index in the tree and returns a pointer to the QTreeWidgetItem, otherwise returns a nullptr.

See also: insertTopLevelItem(), topLevelItem(), topLevelItemCount()

QTreeWidgetItem * QTreeWidget::topLevelItem ( int index ) const

Returns the top level item at the given index or a nullptr if the item does not exist.

See also: topLevelItemCount(), insertTopLevelItem()

int QTreeWidget::topLevelItemCount ( ) const

Returns the value of the property.

QRect QTreeWidget::visualItemRect ( const QTreeWidgetItem * item ) const

Returns the rectangle on the viewport occupied by the item at item.

See also: itemAt()

Property Documentation

QTreeWidget::columnCount

This property holds the number of columns displayed in the tree widget. By default this property has a value of 1.

Properties	Class Methods
read	columnCount
write	setColumnCount

QTreeWidget::topLevelItemCount

This property holds the number of top level items. By default this property has a value of 0.

See also: columnCount(), currentItem()

Properties	Class Methods
read	topLevelItemCount

Public Signals

Public Slots

Public Methods

Protected Methods

Properties

Friends

Additional Inherited Members

Detailed Description

Example

Constructor & Destructor Documentation

Method Documentation

Property Documentation