The QTreeView class provides a default model/view implementation of a tree view.
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| QTreeView (QWidget *parent=nullptr) |
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| ~QTreeView () |
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bool | allColumnsShowFocus () const |
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int | autoExpandDelay () const |
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int | columnAt (int x) const |
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int | columnViewportPosition (int column) const |
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int | columnWidth (int column) const |
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void | dataChanged (const QModelIndex &topLeft, const QModelIndex &bottomRight, const QVector< int > &roles=QVector< int >()) override |
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bool | expandsOnDoubleClick () const |
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QHeaderView * | header () const |
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int | indentation () const |
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QModelIndex | indexAbove (const QModelIndex &index) const |
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QModelIndex | indexAt (const QPoint &point) const override |
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QModelIndex | indexBelow (const QModelIndex &index) const |
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bool | isAnimated () const |
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bool | isColumnHidden (int column) const |
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bool | isExpanded (const QModelIndex &index) const |
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bool | isFirstColumnSpanned (int row, const QModelIndex &parent) const |
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bool | isHeaderHidden () const |
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bool | isRowHidden (int row, const QModelIndex &parent) const |
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bool | isSortingEnabled () const |
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bool | itemsExpandable () const |
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void | keyboardSearch (const QString &search) override |
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void | reset () override |
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void | resetIndentation () |
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bool | rootIsDecorated () const |
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void | scrollTo (const QModelIndex &index, ScrollHint hint=EnsureVisible) override |
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void | selectAll () override |
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void | setAllColumnsShowFocus (bool enable) |
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void | setAnimated (bool enable) |
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void | setAutoExpandDelay (int delay) |
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void | setColumnHidden (int column, bool hide) |
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void | setColumnWidth (int column, int width) |
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void | setExpanded (const QModelIndex &index, bool expanded) |
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void | setExpandsOnDoubleClick (bool enable) |
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void | setFirstColumnSpanned (int row, const QModelIndex &parent, bool span) |
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void | setHeader (QHeaderView *header) |
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void | setHeaderHidden (bool hide) |
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void | setIndentation (int i) |
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void | setItemsExpandable (bool enable) |
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void | setModel (QAbstractItemModel *model) override |
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void | setRootIndex (const QModelIndex &index) override |
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void | setRootIsDecorated (bool show) |
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void | setRowHidden (int row, const QModelIndex &parent, bool hide) |
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void | setSelectionModel (QItemSelectionModel *selectionModel) override |
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void | setSortingEnabled (bool enable) |
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void | setTreePosition (int logicalIndex) |
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void | setUniformRowHeights (bool uniform) |
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void | setWordWrap (bool on) |
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void | sortByColumn (int column, Qt::SortOrder order) |
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int | treePosition () const |
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bool | uniformRowHeights () const |
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QRect | visualRect (const QModelIndex &index) const override |
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bool | wordWrap () const |
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| QAbstractItemView (QWidget *parent=nullptr) |
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| ~QAbstractItemView () |
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bool | alternatingRowColors () const |
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int | autoScrollMargin () const |
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void | closePersistentEditor (const QModelIndex &index) |
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QModelIndex | currentIndex () const |
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Qt::DropAction | defaultDropAction () const |
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DragDropMode | dragDropMode () const |
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bool | dragDropOverwriteMode () const |
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bool | dragEnabled () const |
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EditTriggers | editTriggers () const |
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bool | hasAutoScroll () const |
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ScrollMode | horizontalScrollMode () const |
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QSize | iconSize () const |
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QWidget * | indexWidget (const QModelIndex &index) const |
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QVariant | inputMethodQuery (Qt::InputMethodQuery query) const override |
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QAbstractItemDelegate * | itemDelegate () const |
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QAbstractItemDelegate * | itemDelegate (const QModelIndex &index) const |
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QAbstractItemDelegate * | itemDelegateForColumn (int column) const |
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QAbstractItemDelegate * | itemDelegateForRow (int row) const |
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QAbstractItemModel * | model () const |
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void | openPersistentEditor (const QModelIndex &index) |
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QModelIndex | rootIndex () const |
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QAbstractItemView::SelectionBehavior | selectionBehavior () const |
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QAbstractItemView::SelectionMode | selectionMode () const |
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QItemSelectionModel * | selectionModel () const |
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void | setAlternatingRowColors (bool enable) |
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void | setAutoScroll (bool enable) |
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void | setAutoScrollMargin (int margin) |
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void | setDefaultDropAction (Qt::DropAction dropAction) |
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void | setDragDropMode (DragDropMode behavior) |
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void | setDragDropOverwriteMode (bool overwrite) |
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void | setDragEnabled (bool enable) |
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void | setDropIndicatorShown (bool enable) |
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void | setEditTriggers (EditTriggers triggers) |
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void | setHorizontalScrollMode (ScrollMode mode) |
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void | setIconSize (const QSize &size) |
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void | setIndexWidget (const QModelIndex &index, QWidget *widget) |
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void | setItemDelegate (QAbstractItemDelegate *delegate) |
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void | setItemDelegateForColumn (int column, QAbstractItemDelegate *delegate) |
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void | setItemDelegateForRow (int row, QAbstractItemDelegate *delegate) |
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void | setSelectionBehavior (QAbstractItemView::SelectionBehavior behavior) |
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void | setSelectionMode (QAbstractItemView::SelectionMode mode) |
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void | setTabKeyNavigation (bool enable) |
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void | setTextElideMode (Qt::TextElideMode mode) |
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void | setVerticalScrollMode (ScrollMode mode) |
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bool | showDropIndicator () const |
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QSize | sizeHintForIndex (const QModelIndex &index) const |
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virtual int | sizeHintForRow (int row) const |
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bool | tabKeyNavigation () const |
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Qt::TextElideMode | textElideMode () const |
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ScrollMode | verticalScrollMode () const |
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| QAbstractScrollArea (QWidget *parent=nullptr) |
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| ~QAbstractScrollArea () |
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void | addScrollBarWidget (QWidget *widget, Qt::Alignment alignment) |
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QWidget * | cornerWidget () const |
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QScrollBar * | horizontalScrollBar () const |
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Qt::ScrollBarPolicy | horizontalScrollBarPolicy () const |
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QSize | maximumViewportSize () const |
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QSize | minimumSizeHint () const override |
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QWidgetList | scrollBarWidgets (Qt::Alignment alignment) |
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void | setCornerWidget (QWidget *widget) |
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void | setHorizontalScrollBar (QScrollBar *scrollBar) |
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void | setHorizontalScrollBarPolicy (Qt::ScrollBarPolicy) |
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void | setSizeAdjustPolicy (SizeAdjustPolicy policy) |
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virtual void | setupViewport (QWidget *viewport) |
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void | setVerticalScrollBar (QScrollBar *scrollBar) |
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void | setVerticalScrollBarPolicy (Qt::ScrollBarPolicy) |
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void | setViewport (QWidget *widget) |
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SizeAdjustPolicy | sizeAdjustPolicy () const |
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QSize | sizeHint () const override |
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QScrollBar * | verticalScrollBar () const |
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Qt::ScrollBarPolicy | verticalScrollBarPolicy () const |
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QWidget * | viewport () const |
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| QFrame (QWidget *parent=nullptr, Qt::WindowFlags flags=Qt::EmptyFlag) |
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| ~QFrame () |
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QRect | frameRect () const |
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Shadow | frameShadow () const |
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Shape | frameShape () const |
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int | frameStyle () const |
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int | frameWidth () const |
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int | lineWidth () const |
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int | midLineWidth () const |
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void | setFrameRect (const QRect &rect) |
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void | setFrameShadow (Shadow value) |
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void | setFrameShape (Shape value) |
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void | setFrameStyle (int style) |
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void | setLineWidth (int width) |
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void | setMidLineWidth (int width) |
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QSize | sizeHint () const override |
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| QWidget (QWidget *parent=nullptr, Qt::WindowFlags flags=Qt::EmptyFlag) |
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| ~QWidget () |
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bool | acceptDrops () const |
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QString | accessibleDescription () const |
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QString | accessibleName () const |
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QList< QAction * > | actions () const |
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void | activateWindow () |
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void | addAction (QAction *action) |
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void | addActions (const QList< QAction * > &actions) |
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void | adjustSize () |
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bool | autoFillBackground () const |
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QPalette::ColorRole | backgroundRole () const |
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QBackingStore * | backingStore () const |
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QSize | baseSize () const |
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QWidget * | childAt (const QPoint &position) const |
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QWidget * | childAt (int x, int y) const |
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QRect | childrenRect () const |
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QRegion | childrenRegion () const |
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void | clearFocus () |
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void | clearMask () |
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QMargins | contentsMargins () const |
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QRect | contentsRect () const |
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Qt::ContextMenuPolicy | contextMenuPolicy () const |
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QCursor | cursor () const |
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WId | effectiveWinId () const |
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void | ensurePolished () const |
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Qt::FocusPolicy | focusPolicy () const |
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QWidget * | focusProxy () const |
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QWidget * | focusWidget () const |
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const QFont & | font () const |
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QFontInfo | fontInfo () const |
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QFontMetrics | fontMetrics () const |
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QPalette::ColorRole | foregroundRole () const |
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QRect | frameGeometry () const |
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QSize | frameSize () const |
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const QRect & | geometry () const |
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void | getContentsMargins (int *left, int *top, int *right, int *bottom) const |
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QPixmap | grab (const QRect &rectangle=QRect (QPoint (0, 0), QSize (-1,-1))) |
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void | grabGesture (Qt::GestureType gestureType, Qt::GestureFlags flags=Qt::GestureFlags ()) |
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void | grabKeyboard () |
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void | grabMouse () |
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void | grabMouse (const QCursor &cursor) |
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int | grabShortcut (const QKeySequence &key, Qt::ShortcutContext context=Qt::WindowShortcut) |
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QGraphicsEffect * | graphicsEffect () const |
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QGraphicsProxyWidget * | graphicsProxyWidget () const |
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bool | hasEditFocus () const |
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bool | hasFocus () const |
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virtual bool | hasHeightForWidth () const |
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bool | hasMouseTracking () const |
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int | height () const |
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virtual int | heightForWidth (int width) const |
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Qt::InputMethodHints | inputMethodHints () const |
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void | insertAction (QAction *before, QAction *action) |
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void | insertActions (QAction *before, QList< QAction * > actions) |
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bool | isActiveWindow () const |
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bool | isAncestorOf (const QWidget *child) const |
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bool | isEnabled () const |
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bool | isEnabledTo (const QWidget *parent) const |
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bool | isEnabledToTLW () const |
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bool | isFullScreen () const |
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bool | isHidden () const |
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bool | isMaximized () const |
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bool | isMinimized () const |
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bool | isModal () const |
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bool | isTopLevel () const |
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bool | isVisible () const |
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bool | isVisibleTo (const QWidget *parent) const |
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bool | isWindow () const |
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bool | isWindowModified () const |
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QLayout * | layout () const |
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Qt::LayoutDirection | layoutDirection () const |
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QLocale | locale () const |
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QPoint | mapFrom (const QWidget *parent, const QPoint &pos) const |
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QPoint | mapFromGlobal (const QPoint &pos) const |
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QPoint | mapFromParent (const QPoint &pos) const |
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QPoint | mapTo (const QWidget *parent, const QPoint &pos) const |
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QPoint | mapToGlobal (const QPoint &pos) const |
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QPoint | mapToParent (const QPoint &pos) const |
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QRegion | mask () const |
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int | maximumHeight () const |
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QSize | maximumSize () const |
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int | maximumWidth () const |
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int | minimumHeight () const |
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QSize | minimumSize () const |
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int | minimumWidth () const |
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void | move (const QPoint &point) |
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void | move (int x, int y) |
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QWidget * | nativeParentWidget () const |
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QWidget * | nextInFocusChain () const |
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QRect | normalGeometry () const |
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void | overrideWindowFlags (Qt::WindowFlags flags) |
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QPaintEngine * | paintEngine () const override |
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const QPalette & | palette () const |
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QWidget * | parentWidget () const |
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QPoint | pos () const |
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QWidget * | previousInFocusChain () const |
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QRect | rect () const |
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void | releaseKeyboard () |
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void | releaseMouse () |
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void | releaseShortcut (int id) |
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void | removeAction (QAction *action) |
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void | render (QPaintDevice *target, const QPoint &targetOffset=QPoint (), const QRegion &sourceRegion=QRegion (), RenderFlags renderFlags=RenderFlags (DrawWindowBackground|DrawChildren)) |
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void | render (QPainter *painter, const QPoint &targetOffset=QPoint (), const QRegion &sourceRegion=QRegion (), RenderFlags renderFlags=RenderFlags (DrawWindowBackground|DrawChildren)) |
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void | repaint (const QRect &rect) |
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void | repaint (const QRegion ®ion) |
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void | repaint (int x, int y, int w, int h) |
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void | resize (const QSize &size) |
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void | resize (int w, int h) |
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bool | restoreGeometry (const QByteArray &geometry) |
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QByteArray | saveGeometry () const |
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void | scroll (int dx, int dy) |
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void | scroll (int dx, int dy, const QRect &rect) |
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void | setAcceptDrops (bool on) |
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void | setAccessibleDescription (const QString &description) |
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void | setAccessibleName (const QString &name) |
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void | setAttribute (Qt::WidgetAttribute attribute, bool enable=true) |
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void | setAutoFillBackground (bool enable) |
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void | setBackgroundRole (QPalette::ColorRole role) |
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void | setBaseSize (const QSize &size) |
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void | setBaseSize (int basew, int baseh) |
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void | setContentsMargins (const QMargins &margins) |
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void | setContentsMargins (int left, int top, int right, int bottom) |
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void | setContextMenuPolicy (Qt::ContextMenuPolicy policy) |
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void | setCursor (const QCursor &cursor) |
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void | setEditFocus (bool enable) |
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void | setFixedHeight (int h) |
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void | setFixedSize (const QSize &size) |
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void | setFixedSize (int w, int h) |
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void | setFixedWidth (int w) |
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void | setFocus (Qt::FocusReason reason) |
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void | setFocusPolicy (Qt::FocusPolicy policy) |
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void | setFocusProxy (QWidget *widget) |
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void | setFont (const QFont &font) |
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void | setForegroundRole (QPalette::ColorRole role) |
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void | setGeometry (const QRect &rect) |
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void | setGeometry (int x, int y, int w, int h) |
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void | setGraphicsEffect (QGraphicsEffect *effect) |
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void | setInputMethodHints (Qt::InputMethodHints hints) |
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void | setLayout (QLayout *layout) |
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void | setLayoutDirection (Qt::LayoutDirection direction) |
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void | setLocale (const QLocale &locale) |
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void | setMask (const QBitmap &bitmap) |
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void | setMask (const QRegion ®ion) |
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void | setMaximumHeight (int maxh) |
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void | setMaximumSize (const QSize &size) |
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void | setMaximumSize (int maxw, int maxh) |
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void | setMaximumWidth (int maxw) |
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void | setMinimumHeight (int minh) |
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void | setMinimumSize (const QSize &size) |
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void | setMinimumSize (int minw, int minh) |
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void | setMinimumWidth (int minw) |
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void | setMouseTracking (bool enable) |
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void | setPalette (const QPalette &palette) |
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void | setParent (QWidget *parent) |
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void | setParent (QWidget *parent, Qt::WindowFlags flags) |
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void | setShortcutAutoRepeat (int id, bool enable=true) |
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void | setShortcutEnabled (int id, bool enable=true) |
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void | setSizeIncrement (const QSize &size) |
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void | setSizeIncrement (int w, int h) |
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void | setSizePolicy (QSizePolicy policy) |
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void | setSizePolicy (QSizePolicy::Policy horizontal, QSizePolicy::Policy vertical) |
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void | setStatusTip (const QString &data) |
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void | setStyle (QStyle *style) |
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void | setToolTip (const QString &data) |
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void | setToolTipDuration (int msec) |
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void | setUpdatesEnabled (bool enable) |
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void | setWhatsThis (const QString &str) |
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void | setWindowFilePath (const QString &filePath) |
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void | setWindowFlags (Qt::WindowFlags flags) |
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void | setWindowIcon (const QIcon &icon) |
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void | setWindowModality (Qt::WindowModality windowModality) |
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void | setWindowOpacity (qreal level) |
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void | setWindowRole (const QString &role) |
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void | setWindowState (Qt::WindowStates windowState) |
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QSize | size () const |
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QSize | sizeIncrement () const |
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QSizePolicy | sizePolicy () const |
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void | stackUnder (QWidget *widget) |
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QString | statusTip () const |
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QStyle * | style () const |
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QString | styleSheet () const |
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bool | testAttribute (Qt::WidgetAttribute attribute) const |
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QString | toolTip () const |
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int | toolTipDuration () const |
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QWidget * | topLevelWidget () const |
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bool | underMouse () const |
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void | ungrabGesture (Qt::GestureType gestureType) |
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void | unsetCursor () |
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void | unsetLayoutDirection () |
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void | unsetLocale () |
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void | update (const QRect &rect) |
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void | update (const QRegion ®ion) |
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void | update (int x, int y, int w, int h) |
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void | updateGeometry () |
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bool | updatesEnabled () const |
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QRegion | visibleRegion () const |
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QString | whatsThis () const |
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int | width () const |
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QWidget * | window () const |
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QString | windowFilePath () const |
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Qt::WindowFlags | windowFlags () const |
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QWindow * | windowHandle () const |
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QIcon | windowIcon () const |
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Qt::WindowModality | windowModality () const |
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qreal | windowOpacity () const |
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QString | windowRole () const |
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Qt::WindowStates | windowState () const |
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QString | windowTitle () const |
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Qt::WindowType | windowType () const |
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WId | winId () const |
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int | x () const |
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int | y () const |
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| QObject (QObject *parent=nullptr) |
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| ~QObject () |
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bool | blockSignals (bool block) |
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const QList< QObject * > & | children () const |
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bool | connect (const QObject *sender, const QString &signalMethod, const QString &location, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection) |
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bool | connect (const QObject *sender, const QString &signalMethod, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection) |
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bool | disconnect (const QObject *receiver, const QString &slotMethod=QString ()) const |
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bool | disconnect (const QString &signalMethod, const QString &location, const QObject *receiver=nullptr, const QString &slotMethod=QString ()) const |
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bool | disconnect (const QString &signalMethod=QString (), const QObject *receiver=nullptr, const QString &slotMethod=QString ()) const |
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void | dumpObjectInfo () |
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void | dumpObjectTree () |
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QList< QString > | dynamicPropertyNames () const |
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virtual bool | event (QEvent *event) |
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virtual bool | eventFilter (QObject *watched, QEvent *event) |
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template<typename T > |
T | findChild (const QString &childName=QString ()) const |
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template<class T > |
QList< T > | findChildren (const QRegularExpression ®Exp, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const |
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template<class T > |
QList< T > | findChildren (const QString &objName=QString (), Qt::FindChildOptions options=Qt::FindChildrenRecursively) const |
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bool | inherits (const QString &className) const |
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void | installEventFilter (QObject *filterObj) |
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bool | isWidgetType () const |
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bool | isWindowType () const |
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void | killTimer (int id) |
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const QMetaObject * | metaObject () const |
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void | moveToThread (QThread *targetThread) |
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QString | objectName () const |
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QObject * | parent () const |
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template<class T = QVariant> |
T | property (const QString &name) const |
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void | removeEventFilter (QObject *obj) |
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void | setObjectName (const QString &name) |
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void | setParent (QObject *parent) |
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bool | setProperty (const QString &name, const QVariant &value) |
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bool | signalsBlocked () const |
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int | startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer) |
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QThread * | thread () const |
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virtual | ~QPaintDevice () |
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int | colorCount () const |
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int | depth () const |
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int | devicePixelRatio () const |
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qreal | devicePixelRatioF () const |
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int | height () const |
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int | heightMM () const |
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int | logicalDpiX () const |
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int | logicalDpiY () const |
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bool | paintingActive () const |
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int | physicalDpiX () const |
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int | physicalDpiY () const |
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int | width () const |
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int | widthMM () const |
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void | currentChanged (const QModelIndex ¤t, const QModelIndex &previous) override |
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void | dragMoveEvent (QDragMoveEvent *event) override |
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virtual void | drawBranches (QPainter *painter, const QRect &rect, const QModelIndex &index) const |
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virtual void | drawRow (QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const |
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void | drawTree (QPainter *painter, const QRegion ®ion) const |
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int | horizontalOffset () const override |
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void | horizontalScrollbarAction (int action) override |
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int | indexRowSizeHint (const QModelIndex &index) const |
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bool | isIndexHidden (const QModelIndex &index) const override |
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void | keyPressEvent (QKeyEvent *event) override |
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void | mouseDoubleClickEvent (QMouseEvent *event) override |
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void | mouseMoveEvent (QMouseEvent *event) override |
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void | mousePressEvent (QMouseEvent *event) override |
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void | mouseReleaseEvent (QMouseEvent *event) override |
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QModelIndex | moveCursor (CursorAction cursorAction, Qt::KeyboardModifiers modifiers) override |
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void | paintEvent (QPaintEvent *event) override |
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int | rowHeight (const QModelIndex &index) const |
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void | rowsAboutToBeRemoved (const QModelIndex &parent, int start, int end) override |
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void | rowsInserted (const QModelIndex &parent, int start, int end) override |
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void | scrollContentsBy (int dx, int dy) override |
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QModelIndexList | selectedIndexes () const override |
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void | selectionChanged (const QItemSelection &selected, const QItemSelection &deselected) override |
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void | setSelection (const QRect &rect, QItemSelectionModel::SelectionFlags command) override |
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int | sizeHintForColumn (int column) const override |
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void | timerEvent (QTimerEvent *event) override |
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void | updateGeometries () override |
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int | verticalOffset () const override |
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bool | viewportEvent (QEvent *event) override |
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QSize | viewportSizeHint () const override |
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QRegion | visualRegionForSelection (const QItemSelection &selection) const override |
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QPoint | dirtyRegionOffset () const |
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void | dragEnterEvent (QDragEnterEvent *event) override |
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void | dragLeaveEvent (QDragLeaveEvent *event) override |
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void | dropEvent (QDropEvent *event) override |
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DropIndicatorPosition | dropIndicatorPosition () const |
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virtual bool | edit (const QModelIndex &index, EditTrigger trigger, QEvent *event) |
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bool | event (QEvent *event) override |
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void | executeDelayedItemsLayout () |
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void | focusInEvent (QFocusEvent *event) override |
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bool | focusNextPrevChild (bool next) override |
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void | focusOutEvent (QFocusEvent *event) override |
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int | horizontalStepsPerItem () const |
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void | inputMethodEvent (QInputMethodEvent *event) override |
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void | resizeEvent (QResizeEvent *event) override |
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void | scheduleDelayedItemsLayout () |
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void | scrollDirtyRegion (int dx, int dy) |
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virtual QItemSelectionModel::SelectionFlags | selectionCommand (const QModelIndex &index, const QEvent *event=nullptr) const |
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void | setDirtyRegion (const QRegion ®ion) |
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void | setHorizontalStepsPerItem (int steps) |
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void | setState (State state) |
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void | setVerticalStepsPerItem (int steps) |
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virtual void | startDrag (Qt::DropActions supportedActions) |
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State | state () const |
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void | timerEvent (QTimerEvent *event) override |
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int | verticalStepsPerItem () const |
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virtual QStyleOptionViewItem | viewOptions () const |
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void | contextMenuEvent (QContextMenuEvent *event) override |
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void | dragEnterEvent (QDragEnterEvent *event) override |
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void | dragLeaveEvent (QDragLeaveEvent *event) override |
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void | dragMoveEvent (QDragMoveEvent *event) override |
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void | dropEvent (QDropEvent *event) override |
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bool | event (QEvent *event) override |
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void | keyPressEvent (QKeyEvent *event) override |
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void | mouseDoubleClickEvent (QMouseEvent *event) override |
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void | mouseMoveEvent (QMouseEvent *event) override |
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void | mousePressEvent (QMouseEvent *event) override |
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void | mouseReleaseEvent (QMouseEvent *event) override |
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void | paintEvent (QPaintEvent *event) override |
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void | resizeEvent (QResizeEvent *event) override |
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void | setViewportMargins (const QMargins &margins) |
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void | setViewportMargins (int left, int top, int right, int bottom) |
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QMargins | viewportMargins () const |
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void | wheelEvent (QWheelEvent *event) override |
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void | changeEvent (QEvent *event) override |
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void | drawFrame (QPainter *painter) |
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bool | event (QEvent *event) override |
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void | initStyleOption (QStyleOptionFrame *option) const |
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void | paintEvent (QPaintEvent *event) override |
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virtual void | actionEvent (QActionEvent *event) |
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virtual void | closeEvent (QCloseEvent *event) |
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void | create (WId window=0, bool initializeWindow=true, bool destroyOldWindow=true) |
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void | destroy (bool destroyWindow=true, bool destroySubWindows=true) |
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virtual void | enterEvent (QEvent *event) |
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bool | event (QEvent *event) override |
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bool | focusNextChild () |
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bool | focusPreviousChild () |
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virtual void | hideEvent (QHideEvent *event) |
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void | initPainter (QPainter *painter) const override |
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virtual void | keyReleaseEvent (QKeyEvent *event) |
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virtual void | leaveEvent (QEvent *event) |
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int | metric (PaintDeviceMetric metric) const override |
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virtual void | moveEvent (QMoveEvent *event) |
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virtual bool | nativeEvent (const QByteArray &eventType, void *message, long *result) |
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virtual void | showEvent (QShowEvent *event) |
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virtual void | tabletEvent (QTabletEvent *event) |
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virtual void | childEvent (QChildEvent *event) |
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virtual void | connectNotify (const QMetaMethod &signalMethod) const |
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virtual void | customEvent (QEvent *event) |
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virtual void | disconnectNotify (const QMetaMethod &signalMethod) const |
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bool | isSignalConnected (const QMetaMethod &signalMethod) const |
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int | receivers (const QString &signal) const |
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QObject * | sender () const |
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int | senderSignalIndex () const |
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virtual void | timerEvent (QTimerEvent *event) |
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| QPaintDevice () |
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enum | DragDropMode |
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enum | ScrollHint |
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enum | ScrollMode |
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enum | SelectionBehavior |
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enum | SelectionMode |
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enum | Shadow |
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enum | Shape |
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enum | StyleMask |
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enum | RenderFlag |
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enum | PaintDeviceMetric |
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static QWidget * | createWindowContainer (QWindow *window, QWidget *parent=nullptr, Qt::WindowFlags flags=Qt::EmptyFlag) |
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static QWidget * | find (WId id) |
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static QWidget * | keyboardGrabber () |
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static QWidget * | mouseGrabber () |
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static void | setTabOrder (QWidget *firstWidget, QWidget *secondWidget) |
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static bool | connect (const QObject *sender, const QMetaMethod &signalMethod, const QObject *receiver, const QMetaMethod &slotMethod, Qt::ConnectionType type=Qt::AutoConnection) |
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static bool | connect (const QObject *sender, const QString &signalMethod, const QObject *receiver, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection, const QString &location=QString ()) |
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static bool | connect (const QObject *sender, const QString &signalMethod, const QString &location, const QObject *receiver, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection) |
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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) |
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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) |
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static bool | disconnect (const QObject *sender, const QMetaMethod &signalMethod, const QObject *receiver, const QMetaMethod &slotMethod) |
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static bool | disconnect (const QObject *sender, const QString &signalMethod, const QObject *receiver, const QString &slotMethod) |
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static bool | disconnect (const QObject *sender, const QString &signalMethod, const QString &location, const QObject *receiver, const QString &slotMethod) |
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static bool | disconnect (const QObject *sender, std::nullptr_t, const QObject *receiver, std::nullptr_t) |
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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...)) |
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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) |
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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) |
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static QMetaObject & | staticMetaObject () |
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static QString | tr (const char *text, const char *comment=nullptr, std::optional< int > numArg=std::optional< int >()) |
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enum | CursorAction |
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enum | DropIndicatorPosition |
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enum | State |
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| QWidgetList |
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| WId |
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T | qobject_cast (QObject *object) |
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| QObjectList |
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The QTreeView class provides a default model/view implementation of a tree view. A QTreeView implements a tree representation of items from a model. This class is used to provide standard hierarchical lists that were previously provided by the QListView, but using the more flexible approach provided by the CopperSpice model/view architecture.
QTreeView implements the interfaces defined by the QAbstractItemView class to allow it to display data provided by models derived from the QAbstractItemModel class. The model/view architecture ensures that the contents of the tree view are updated as the model changes.
Items that have children can be in an expanded (children are visible) or collapsed (children are hidden) state. When this state changes a collapsed() or expanded() signal is emitted with the model index of the relevant item. The amount of indentation used to indicate levels of hierarchy is controlled by the indentation property.
Headers in tree views are constructed using the QHeaderView class and can be hidden using header()->hide()
. Note that each header is configured with its stretchLastSection property set to true, ensuring that the view does not waste any of the space assigned to it for its header. If this value is set to true, this property will override the resize mode set on the last section in the header.
The QTreeView class is one of the Model/View Classes.
Example
It is simple to construct a tree view displaying data from a model. In the following example, the contents of a directory are supplied by a QFileSystemModel and displayed as a tree.
Key Bindings
QTreeView supports a set of key bindings that enable the user to navigate in the view and interact with the contents of items:
Key | Action |
Up | Moves the cursor to the item in the same column on the previous row. If the parent of the current item has no more rows to navigate to, the cursor moves to the relevant item in the last row of the sibling that precedes the parent. |
Down | Moves the cursor to the item in the same column on the next row. If the parent of the current item has no more rows to navigate to, the cursor moves to the relevant item in the first row of the sibling that follows the parent. |
Left | Hides the children of the current item (if present) by collapsing a branch. |
Minus | Same as LeftArrow. |
Right | Reveals the children of the current item (if present) by expanding a branch. |
Plus | Same as RightArrow. |
Asterisk | Expands all children of the current item (if present). |
PageUp | Moves the cursor up one page. |
PageDown | Moves the cursor down one page. |
Home | Moves the cursor to an item in the same column of the first row of the first top-level item in the model. |
End | Moves the cursor to an item in the same column of the last row of the last top-level item in the model. |
F2 | In editable models, this opens the current item for editing. The Escape key can be used to cancel the editing process and revert any changes to the data displayed. |
Improving Performance
It is possible to give the view hints about the data it is handling in order to improve its performance when displaying large numbers of items. One approach that can be taken for views that are intended to display items with equal heights is to set the uniformRowHeights property to true.
- See also
- QListView, QTreeWidget, QAbstractItemModel, QAbstractItemView