内容

• 特性
• 公共函数
• 重实现公共函数
• 信号
• 保护函数
• 重实现保护函数
• 详细描述

QColumnView Class

The QColumnView class provides a model/view implementation of a column view. 更多...

头：	#include <QColumnView>
qmake:	QT += widgets
Since:	Qt 4.3
继承：	QAbstractItemView

该类在 Qt 4.3 引入。

• 所有成员列表，包括继承成员

特性

• resizeGripsVisible : bool

公共函数

	QColumnView (QWidget * parent = nullptr)
virtual	~QColumnView ()
QList<int>	columnWidths () const
QWidget *	previewWidget () const
bool	resizeGripsVisible () const
void	setColumnWidths (const QList<int> & list )
void	setPreviewWidget (QWidget * widget )
void	setResizeGripsVisible (bool visible )

重实现公共函数

virtual QModelIndex	indexAt (const QPoint & point ) const override
virtual void	scrollTo (const QModelIndex & index , QAbstractItemView::ScrollHint hint = EnsureVisible) override
virtual void	selectAll () override
virtual void	setModel (QAbstractItemModel * model ) override
virtual void	setRootIndex (const QModelIndex & index ) override
virtual void	setSelectionModel (QItemSelectionModel * newSelectionModel ) override
virtual QSize	sizeHint () const override
virtual QRect	visualRect (const QModelIndex & index ) const override

信号

void	updatePreviewWidget (const QModelIndex & index )

保护函数

virtual QAbstractItemView *	createColumn (const QModelIndex & index )
void	initializeColumn (QAbstractItemView * column ) const

重实现保护函数

virtual void	currentChanged (const QModelIndex & current , const QModelIndex & previous ) override
virtual int	horizontalOffset () const override
virtual bool	isIndexHidden (const QModelIndex & index ) const override
virtual QModelIndex	moveCursor (QAbstractItemView::CursorAction cursorAction , Qt::KeyboardModifiers modifiers ) override
virtual void	resizeEvent (QResizeEvent * event ) override
virtual void	rowsInserted (const QModelIndex & parent , int start , int end ) override
virtual void	scrollContentsBy (int dx , int dy ) override
virtual void	setSelection (const QRect & rect , QItemSelectionModel::SelectionFlags command ) override
virtual int	verticalOffset () const override
virtual QRegion	visualRegionForSelection (const QItemSelection & selection ) const override

详细描述

QColumnView displays a model in a number of QListViews, one for each hierarchy in the tree. This is sometimes referred to as a cascading list.

The QColumnView class is one of the 模型/视图类 且属于 Qt 的 模型/视图框架 .

QColumnView implements the interfaces defined by the QAbstractItemView 类以允许它显示提供数据，通过模型派生自 QAbstractItemModel 类。

另请参阅 模型/视图编程 .

特性文档编制

resizeGripsVisible : bool

This property holds the way to specify if the list views gets resize grips or not

默认情况下， visible is set to true

访问函数：

bool	resizeGripsVisible () const
void	setResizeGripsVisible (bool visible )

另请参阅 setRootIndex ().

成员函数文档编制

QColumnView:: QColumnView ( QWidget * parent = nullptr)

Constructs a column view with a parent 来表示模型数据。使用 setModel () 来设置模型。

另请参阅 QAbstractItemModel .

[signal] void QColumnView:: updatePreviewWidget (const QModelIndex & index )

This signal is emitted when the preview widget should be updated to provide rich information about index

另请参阅 previewWidget ().

[virtual] QColumnView:: ~QColumnView ()

Destroys the column view.

QList < int > QColumnView:: columnWidths () const

Returns a list of the width of all the columns in this view.

另请参阅 setColumnWidths ().

[virtual protected] QAbstractItemView *QColumnView:: createColumn (const QModelIndex & index )

To use a custom widget for the final column when you select an item overload this function and return a widget. index is the root index that will be assigned to the view.

Return the new view. QColumnView will automatically take ownership of the widget.

另请参阅 setPreviewWidget ().

[override virtual protected] void QColumnView:: currentChanged (const QModelIndex & current , const QModelIndex & previous )

重实现： QAbstractItemView::currentChanged (const QModelIndex ¤t, const QModelIndex &previous).

[override virtual protected] int QColumnView:: horizontalOffset () const

重实现： QAbstractItemView::horizontalOffset () const.

[override virtual] QModelIndex QColumnView:: indexAt (const QPoint & point ) const

重实现： QAbstractItemView::indexAt (const QPoint &point) const.

[protected] void QColumnView:: initializeColumn ( QAbstractItemView * column ) const

Copies the behavior and options of the column view and applies them to the column such as the iconSize (), textElideMode () 和 alternatingRowColors (). This can be useful when reimplementing createColumn ().

该函数在 Qt 4.4 引入。

另请参阅 createColumn ().

[override virtual protected] bool QColumnView:: isIndexHidden (const QModelIndex & index ) const

重实现： QAbstractItemView::isIndexHidden (const QModelIndex &index) const.

[override virtual protected] QModelIndex QColumnView:: moveCursor ( QAbstractItemView::CursorAction cursorAction , Qt::KeyboardModifiers modifiers )

重实现： QAbstractItemView::moveCursor (QAbstractItemView::CursorAction cursorAction, Qt::KeyboardModifiers modifiers).

Move left should go to the parent index Move right should go to the child index or down if there is no child

QWidget *QColumnView:: previewWidget () const

Returns the preview widget, or nullptr 若没有。

另请参阅 setPreviewWidget () 和 updatePreviewWidget ().

[override virtual protected] void QColumnView:: resizeEvent ( QResizeEvent * event )

重实现： QAbstractItemView::resizeEvent (QResizeEvent *event).

[override virtual protected] void QColumnView:: rowsInserted (const QModelIndex & parent , int start , int end )

重实现： QAbstractItemView::rowsInserted (const QModelIndex &parent, int start, int end).

[override virtual protected] void QColumnView:: scrollContentsBy ( int dx , int dy )

重实现： QAbstractScrollArea::scrollContentsBy (int dx, int dy).

[override virtual] void QColumnView:: scrollTo (const QModelIndex & index , QAbstractItemView::ScrollHint hint = EnsureVisible)

重实现： QAbstractItemView::scrollTo (const QModelIndex &index, QAbstractItemView::ScrollHint hint).

[override virtual] void QColumnView:: selectAll ()

重实现： QAbstractItemView::selectAll ().

void QColumnView:: setColumnWidths (const QList < int > & list )

Sets the column widths to the values given in the list . Extra values in the list are kept and used when the columns are created.

If list contains too few values, only width of the rest of the columns will not be modified.

另请参阅 columnWidths () 和 createColumn ().

[override virtual] void QColumnView:: setModel ( QAbstractItemModel * model )

重实现： QAbstractItemView::setModel (QAbstractItemModel *model).

void QColumnView:: setPreviewWidget ( QWidget * widget )

Sets the preview widget .

widget becomes a child of the column view, and will be destroyed when the column area is deleted or when a new widget is set.

另请参阅 previewWidget () 和 updatePreviewWidget ().

[override virtual] void QColumnView:: setRootIndex (const QModelIndex & index )

重实现： QAbstractItemView::setRootIndex (const QModelIndex &index).

[override virtual protected] void QColumnView:: setSelection (const QRect & rect , QItemSelectionModel::SelectionFlags command )

重实现： QAbstractItemView::setSelection (const QRect &rect, QItemSelectionModel::SelectionFlags flags).

[override virtual] void QColumnView:: setSelectionModel ( QItemSelectionModel * newSelectionModel )

重实现： QAbstractItemView::setSelectionModel (QItemSelectionModel *selectionModel).

[override virtual] QSize QColumnView:: sizeHint () const

重实现： QAbstractScrollArea::sizeHint () const.

[override virtual protected] int QColumnView:: verticalOffset () const

重实现： QAbstractItemView::verticalOffset () const.

[override virtual] QRect QColumnView:: visualRect (const QModelIndex & index ) const

重实现： QAbstractItemView::visualRect (const QModelIndex &index) const.

[override virtual protected] QRegion QColumnView:: visualRegionForSelection (const QItemSelection & selection ) const

重实现： QAbstractItemView::visualRegionForSelection (const QItemSelection &selection) const.