QHeaderView Class

The QHeaderView class provides a header row or header column for item views. More...

Header:	#include <QHeaderView>
qmake:	QT += widgets
Inherits:	QAbstractItemView

• List of all members, including inherited members

Public Types

enum	ResizeMode { Interactive, Fixed, Stretch, ResizeToContents, Custom }

Properties

cascadingSectionResizes : bool defaultAlignment : Qt::Alignment defaultSectionSize : int firstSectionMovable : bool highlightSections : bool

maximumSectionSize : int minimumSectionSize : int showSortIndicator : bool stretchLastSection : bool

Public Functions

	QHeaderView(Qt::Orientation orientation, QWidget *parent = nullptr)
virtual	~QHeaderView()
bool	cascadingSectionResizes() const
int	count() const
Qt::Alignment	defaultAlignment() const
int	defaultSectionSize() const
int	hiddenSectionCount() const
void	hideSection(int logicalIndex)
bool	highlightSections() const
bool	isFirstSectionMovable() const
bool	isSectionHidden(int logicalIndex) const
bool	isSortIndicatorShown() const
int	length() const
int	logicalIndex(int visualIndex) const
int	logicalIndexAt(int position) const
int	logicalIndexAt(int x, int y) const
int	logicalIndexAt(const QPoint &pos) const
int	maximumSectionSize() const
int	minimumSectionSize() const
void	moveSection(int from, int to)
int	offset() const
Qt::Orientation	orientation() const
void	resetDefaultSectionSize()
int	resizeContentsPrecision() const
void	resizeSection(int logicalIndex, int size)
void	resizeSections(QHeaderView::ResizeMode mode)
bool	restoreState(const QByteArray &state)
QByteArray	saveState() const
int	sectionPosition(int logicalIndex) const
QHeaderView::ResizeMode	sectionResizeMode(int logicalIndex) const
int	sectionSize(int logicalIndex) const
int	sectionSizeHint(int logicalIndex) const
int	sectionViewportPosition(int logicalIndex) const
bool	sectionsClickable() const
bool	sectionsHidden() const
bool	sectionsMovable() const
bool	sectionsMoved() const
void	setCascadingSectionResizes(bool enable)
void	setDefaultAlignment(Qt::Alignment alignment)
void	setDefaultSectionSize(int size)
void	setFirstSectionMovable(bool movable)
void	setHighlightSections(bool highlight)
void	setMaximumSectionSize(int size)
void	setMinimumSectionSize(int size)
void	setResizeContentsPrecision(int precision)
void	setSectionHidden(int logicalIndex, bool hide)
void	setSectionResizeMode(QHeaderView::ResizeMode mode)
void	setSectionResizeMode(int logicalIndex, QHeaderView::ResizeMode mode)
void	setSectionsClickable(bool clickable)
void	setSectionsMovable(bool movable)
void	setSortIndicator(int logicalIndex, Qt::SortOrder order)
void	setSortIndicatorShown(bool show)
void	setStretchLastSection(bool stretch)
void	showSection(int logicalIndex)
Qt::SortOrder	sortIndicatorOrder() const
int	sortIndicatorSection() const
bool	stretchLastSection() const
int	stretchSectionCount() const
void	swapSections(int first, int second)
int	visualIndex(int logicalIndex) const
int	visualIndexAt(int position) const

Reimplemented Public Functions

virtual void	reset() override
virtual void	setModel(QAbstractItemModel *model) override
virtual void	setVisible(bool v) override
virtual QSize	sizeHint() const override

Public Slots

void	headerDataChanged(Qt::Orientation orientation, int logicalFirst, int logicalLast)
void	setOffset(int offset)
void	setOffsetToLastSection()
void	setOffsetToSectionPosition(int visualSectionNumber)

Signals

void	geometriesChanged()
void	sectionClicked(int logicalIndex)
void	sectionCountChanged(int oldCount, int newCount)
void	sectionDoubleClicked(int logicalIndex)
void	sectionEntered(int logicalIndex)
void	sectionHandleDoubleClicked(int logicalIndex)
void	sectionMoved(int logicalIndex, int oldVisualIndex, int newVisualIndex)
void	sectionPressed(int logicalIndex)
void	sectionResized(int logicalIndex, int oldSize, int newSize)
void	sortIndicatorChanged(int logicalIndex, Qt::SortOrder order)

Protected Functions

void	initStyleOption(QStyleOptionHeader *option) const
virtual void	paintSection(QPainter *painter, const QRect &rect, int logicalIndex) const
virtual QSize	sectionSizeFromContents(int logicalIndex) const

Reimplemented Protected Functions

virtual void	currentChanged(const QModelIndex &current, const QModelIndex &old) override
virtual bool	event(QEvent *e) override
virtual int	horizontalOffset() const override
virtual void	mouseDoubleClickEvent(QMouseEvent *e) override
virtual void	mouseMoveEvent(QMouseEvent *e) override
virtual void	mousePressEvent(QMouseEvent *e) override
virtual void	mouseReleaseEvent(QMouseEvent *e) override
virtual void	paintEvent(QPaintEvent *e) override
virtual void	setSelection(const QRect &rect, QItemSelectionModel::SelectionFlags flags) override
virtual int	verticalOffset() const override
virtual bool	viewportEvent(QEvent *e) override

Protected Slots

void	resizeSections()
void	sectionsAboutToBeRemoved(const QModelIndex &parent, int logicalFirst, int logicalLast)
void	sectionsInserted(const QModelIndex &parent, int logicalFirst, int logicalLast)

Detailed Description

A QHeaderView displays the headers used in item views such as the QTableView and QTreeView classes. It takes the place of Qt3's QHeader class previously used for the same purpose, but uses the Qt's model/view architecture for consistency with the item view classes.

The QHeaderView class is one of the Model/View Classes and is part of Qt's model/view framework.

The header gets the data for each section from the model using the QAbstractItemModel::headerData() function. You can set the data by using QAbstractItemModel::setHeaderData().

Each header has an orientation() and a number of sections, given by the count() function. A section refers to a part of the header - either a row or a column, depending on the orientation.

Sections can be moved and resized using moveSection() and resizeSection(); they can also be hidden and shown with hideSection() and showSection().

Each section of a header is described by a section ID, specified by its section(), and can be located at a particular visualIndex() in the header. A section can have a sort indicator set with setSortIndicator(); this indicates whether the items in the associated item view will be sorted in the order given by the section.

For a horizontal header the section is equivalent to a column in the model, and for a vertical header the section is equivalent to a row in the model.

Moving Header Sections

A header can be fixed in place, or made movable with setSectionsMovable(). It can be made clickable with setSectionsClickable(), and has resizing behavior in accordance with setSectionResizeMode().

Note: Double-clicking on a header to resize a section only applies for visible rows.

A header will emit sectionMoved() if the user moves a section, sectionResized() if the user resizes a section, and sectionClicked() as well as sectionHandleDoubleClicked() in response to mouse clicks. A header will also emit sectionCountChanged().

You can identify a section using the logicalIndex() and logicalIndexAt() functions, or by its index position, using the visualIndex() and visualIndexAt() functions. The visual index will change if a section is moved, but the logical index will not change.

Appearance

QTableWidget and QTableView create default headers. If you want the headers to be visible, you can use setVisible().

Not all ItemDataRoles will have an effect on a QHeaderView. If you need to draw other roles, you can subclass QHeaderView and reimplement paintEvent(). QHeaderView respects the following item data roles, unless they are in conflict with the style (which can happen for styles that follow the desktop theme):

TextAlignmentRole, DisplayRole, FontRole, DecorationRole, ForegroundRole, and BackgroundRole.

Note: Each header renders the data for each section itself, and does not rely on a delegate. As a result, calling a header's setItemDelegate() function will have no effect.

See also Model/View Programming, QListView, QTableView, and QTreeView.

Member Type Documentation

enum QHeaderView::ResizeMode

The resize mode specifies the behavior of the header sections. It can be set on the entire header view or on individual sections using setSectionResizeMode().

Constant	Value	Description
QHeaderView::Interactive	0	The user can resize the section. The section can also be resized programmatically using resizeSection(). The section size defaults to defaultSectionSize. (See also cascadingSectionResizes.)
QHeaderView::Fixed	2	The user cannot resize the section. The section can only be resized programmatically using resizeSection(). The section size defaults to defaultSectionSize.
QHeaderView::Stretch	1	QHeaderView will automatically resize the section to fill the available space. The size cannot be changed by the user or programmatically.
QHeaderView::ResizeToContents	3	QHeaderView will automatically resize the section to its optimal size based on the contents of the entire column or row. The size cannot be changed by the user or programmatically. (This value was introduced in 4.2)

The following values are obsolete:

Constant	Value	Description
QHeaderView::Custom	Fixed	Use Fixed instead.

See also setSectionResizeMode(), stretchLastSection, and minimumSectionSize.

Member Function Documentation

QHeaderView::QHeaderView(Qt::Orientation orientation, QWidget *parent = nullptr)

Creates a new generic header with the given orientation and parent.

[signal] void QHeaderView::geometriesChanged()

This signal is emitted when the header's geometries have changed.

This function was introduced in Qt 4.2.

[slot] void QHeaderView::headerDataChanged(Qt::Orientation orientation, int logicalFirst, int logicalLast)

Updates the changed header sections with the given orientation, from logicalFirst to logicalLast inclusive.

[protected slot] void QHeaderView::resizeSections()

Resizes the sections according to their size hints. Normally, you do not have to call this function.

[signal] void QHeaderView::sectionClicked(int logicalIndex)

This signal is emitted when a section is clicked. The section's logical index is specified by logicalIndex.

Note that the sectionPressed signal will also be emitted.

See also setSectionsClickable() and sectionPressed().

[signal] void QHeaderView::sectionCountChanged(int oldCount, int newCount)

This signal is emitted when the number of sections changes, i.e., when sections are added or deleted. The original count is specified by oldCount, and the new count by newCount.

See also count(), length(), and headerDataChanged().

[signal] void QHeaderView::sectionDoubleClicked(int logicalIndex)

This signal is emitted when a section is double-clicked. The section's logical index is specified by logicalIndex.

See also setSectionsClickable().

[signal] void QHeaderView::sectionEntered(int logicalIndex)

This signal is emitted when the cursor moves over the section and the left mouse button is pressed. The section's logical index is specified by logicalIndex.

This function was introduced in Qt 4.3.

See also setSectionsClickable() and sectionPressed().

[signal] void QHeaderView::sectionHandleDoubleClicked(int logicalIndex)

This signal is emitted when a section is double-clicked. The section's logical index is specified by logicalIndex.

See also setSectionsClickable().

[signal] void QHeaderView::sectionMoved(int logicalIndex, int oldVisualIndex, int newVisualIndex)

This signal is emitted when a section is moved. The section's logical index is specified by logicalIndex, the old index by oldVisualIndex, and the new index position by newVisualIndex.

See also moveSection().

[signal] void QHeaderView::sectionPressed(int logicalIndex)

This signal is emitted when a section is pressed. The section's logical index is specified by logicalIndex.

See also setSectionsClickable().

[signal] void QHeaderView::sectionResized(int logicalIndex, int oldSize, int newSize)

This signal is emitted when a section is resized. The section's logical number is specified by logicalIndex, the old size by oldSize, and the new size by newSize.

See also resizeSection().

[protected slot] void QHeaderView::sectionsAboutToBeRemoved(const QModelIndex &parent, int logicalFirst, int logicalLast)

This slot is called when sections are removed from the parent. logicalFirst and logicalLast signify where the sections were removed.

If only one section is removed, logicalFirst and logicalLast will be the same.

[protected slot] void QHeaderView::sectionsInserted(const QModelIndex &parent, int logicalFirst, int logicalLast)

This slot is called when sections are inserted into the parent. logicalFirst and logicalLast indices signify where the new sections were inserted.

If only one section is inserted, logicalFirst and logicalLast will be the same.

[slot] void QHeaderView::setOffset(int offset)

Sets the header's offset to offset.

See also offset() and length().

[slot] void QHeaderView::setOffsetToLastSection()

Sets the offset to make the last section visible.

This function was introduced in Qt 4.2.

See also setOffset(), sectionPosition(), and setOffsetToSectionPosition().

[slot] void QHeaderView::setOffsetToSectionPosition(int visualSectionNumber)

Sets the offset to the start of the section at the given visualSectionNumber. visualSectionNumber is the actual visible section when hiddenSections are not considered. That is not always the same as visualIndex().

This function was introduced in Qt 4.2.

See also setOffset() and sectionPosition().

[signal] void QHeaderView::sortIndicatorChanged(int logicalIndex, Qt::SortOrder order)

This signal is emitted when the section containing the sort indicator or the order indicated is changed. The section's logical index is specified by logicalIndex and the sort order is specified by order.

This function was introduced in Qt 4.3.

See also setSortIndicator().

[virtual] QHeaderView::~QHeaderView()

Destroys the header.

int QHeaderView::count() const

Returns the number of sections in the header.

See also sectionCountChanged() and length().

[override virtual protected] void QHeaderView::currentChanged(const QModelIndex &current, const QModelIndex &old)

Reimplements: QAbstractItemView::currentChanged(const QModelIndex &current, const QModelIndex &previous).

[override virtual protected] bool QHeaderView::event(QEvent *e)

Reimplements: QAbstractItemView::event(QEvent *event).

int QHeaderView::hiddenSectionCount() const

Returns the number of sections in the header that has been hidden.

This function was introduced in Qt 4.1.

See also setSectionHidden() and isSectionHidden().

void QHeaderView::hideSection(int logicalIndex)

Hides the section specified by logicalIndex.

See also showSection(), isSectionHidden(), hiddenSectionCount(), and setSectionHidden().

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

Reimplements: QAbstractItemView::horizontalOffset() const.

Returns the horizontal offset of the header. This is 0 for vertical headers.

See also offset().

[protected] void QHeaderView::initStyleOption(QStyleOptionHeader *option) const

Initialize option with the values from this QHeaderView. This method is useful for subclasses when they need a QStyleOptionHeader, but do not want to fill in all the information themselves.

See also QStyleOption::initFrom().

bool QHeaderView::isSectionHidden(int logicalIndex) const

Returns true if the section specified by logicalIndex is explicitly hidden from the user; otherwise returns false.

See also hideSection(), showSection(), setSectionHidden(), and hiddenSectionCount().

int QHeaderView::length() const

Returns the length along the orientation of the header.

See also sizeHint(), setSectionResizeMode(), and offset().

int QHeaderView::logicalIndex(int visualIndex) const

Returns the logicalIndex for the section at the given visualIndex position, or -1 if visualIndex < 0 or visualIndex >= QHeaderView::count().

Note that the visualIndex is not affected by hidden sections.

See also visualIndex() and sectionPosition().

int QHeaderView::logicalIndexAt(int position) const

Returns the section that covers the given position in the viewport.

See also visualIndexAt() and isSectionHidden().

int QHeaderView::logicalIndexAt(int x, int y) const

Returns the logical index of the section at the given coordinate. If the header is horizontal x will be used, otherwise y will be used to find the logical index.

int QHeaderView::logicalIndexAt(const QPoint &pos) const

Returns the logical index of the section at the position given in pos. If the header is horizontal the x-coordinate will be used, otherwise the y-coordinate will be used to find the logical index.

See also sectionPosition().

[override virtual protected] void QHeaderView::mouseDoubleClickEvent(QMouseEvent *e)

Reimplements: QAbstractItemView::mouseDoubleClickEvent(QMouseEvent *event).

[override virtual protected] void QHeaderView::mouseMoveEvent(QMouseEvent *e)

Reimplements: QAbstractItemView::mouseMoveEvent(QMouseEvent *event).

[override virtual protected] void QHeaderView::mousePressEvent(QMouseEvent *e)

Reimplements: QAbstractItemView::mousePressEvent(QMouseEvent *event).

[override virtual protected] void QHeaderView::mouseReleaseEvent(QMouseEvent *e)

Reimplements: QAbstractItemView::mouseReleaseEvent(QMouseEvent *event).

void QHeaderView::moveSection(int from, int to)

Moves the section at visual index from to occupy visual index to.

See also sectionsMoved().

int QHeaderView::offset() const

Returns the offset of the header: this is the header's left-most (or top-most for vertical headers) visible pixel.

See also setOffset().

Qt::Orientation QHeaderView::orientation() const

Returns the orientation of the header.

See also Qt::Orientation.

[override virtual protected] void QHeaderView::paintEvent(QPaintEvent *e)

Reimplements: QAbstractScrollArea::paintEvent(QPaintEvent *event).

[virtual protected] void QHeaderView::paintSection(QPainter *painter, const QRect &rect, int logicalIndex) const

Paints the section specified by the given logicalIndex, using the given painter and rect.

Normally, you do not have to call this function.

[override virtual] void QHeaderView::reset()

Reimplements: QAbstractItemView::reset().

int QHeaderView::resizeContentsPrecision() const

Returns how precise QHeaderView will calculate on ResizeToContents.

This function was introduced in Qt 5.2.

See also setResizeContentsPrecision() and setSectionResizeMode().

void QHeaderView::resizeSection(int logicalIndex, int size)

Resizes the section specified by logicalIndex to size measured in pixels. The size parameter must be a value larger or equal to zero. A size equal to zero is however not recommended. In that situation hideSection should be used instead.

See also sectionResized(), sectionSize(), and hideSection().

void QHeaderView::resizeSections(QHeaderView::ResizeMode mode)

Resizes the sections according to the given mode, ignoring the current resize mode.

See also sectionResized().

bool QHeaderView::restoreState(const QByteArray &state)

Restores the state of this header view. This function returns true if the state was restored; otherwise returns false.

This function was introduced in Qt 4.3.

See also saveState().

QByteArray QHeaderView::saveState() const

Saves the current state of this header view.

To restore the saved state, pass the return value to restoreState().

This function was introduced in Qt 4.3.

See also restoreState().

int QHeaderView::sectionPosition(int logicalIndex) const

Returns the section position of the given logicalIndex, or -1 if the section is hidden. The position is measured in pixels from the first visible item's top-left corner to the top-left corner of the item with logicalIndex. The measurement is along the x-axis for horizontal headers and along the y-axis for vertical headers.

See also sectionViewportPosition().

QHeaderView::ResizeMode QHeaderView::sectionResizeMode(int logicalIndex) const

Returns the resize mode that applies to the section specified by the given logicalIndex.

This function was introduced in Qt 5.0.

See also setSectionResizeMode().

int QHeaderView::sectionSize(int logicalIndex) const

Returns the width (or height for vertical headers) of the given logicalIndex.

See also length(), setSectionResizeMode(), and defaultSectionSize().

[virtual protected] QSize QHeaderView::sectionSizeFromContents(int logicalIndex) const

Returns the size of the contents of the section specified by the given logicalIndex.

See also defaultSectionSize().

int QHeaderView::sectionSizeHint(int logicalIndex) const

Returns a suitable size hint for the section specified by logicalIndex.

Qt::SizeHintRole

See also sizeHint(), defaultSectionSize(), minimumSectionSize(), and maximumSectionSize().

int QHeaderView::sectionViewportPosition(int logicalIndex) const

Returns the section viewport position of the given logicalIndex.

If the section is hidden, the return value is undefined.

See also sectionPosition() and isSectionHidden().

bool QHeaderView::sectionsClickable() const

Returns true if the header is clickable; otherwise returns false. A clickable header could be set up to allow the user to change the representation of the data in the view related to the header.

This function was introduced in Qt 5.0.

See also setSectionsClickable().

bool QHeaderView::sectionsHidden() const

Returns true if sections in the header has been hidden; otherwise returns false;

This function was introduced in Qt 4.1.

See also setSectionHidden().

bool QHeaderView::sectionsMovable() const

Returns true if the header can be moved by the user; otherwise returns false.

By default, sections are movable in QTreeView (except for the first one), and not movable in QTableView.

This function was introduced in Qt 5.0.

See also setSectionsMovable().

bool QHeaderView::sectionsMoved() const

Returns true if sections in the header has been moved; otherwise returns false;

See also moveSection().

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

Reimplements: QAbstractItemView::setModel(QAbstractItemModel *model).

void QHeaderView::setResizeContentsPrecision(int precision)

Sets how precise QHeaderView should calculate the size when ResizeToContents is used. A low value will provide a less accurate but fast auto resize while a higher value will provide a more accurate resize that however can be slow.

The number precision specifies how many sections that should be consider when calculating the preferred size.

The default value is 1000 meaning that a horizontal column with auto-resize will look at maximum 1000 rows on calculating when doing an auto resize.

Special value 0 means that it will look at only the visible area. Special value -1 will imply looking at all elements.

This value is used in QTableView::sizeHintForColumn(), QTableView::sizeHintForRow() and QTreeView::sizeHintForColumn(). Reimplementing these functions can make this function not having an effect.

This function was introduced in Qt 5.2.

See also resizeContentsPrecision(), setSectionResizeMode(), resizeSections(), QTableView::sizeHintForColumn(), QTableView::sizeHintForRow(), and QTreeView::sizeHintForColumn().

void QHeaderView::setSectionHidden(int logicalIndex, bool hide)

If hide is true the section specified by logicalIndex is hidden; otherwise the section is shown.

See also isSectionHidden() and hiddenSectionCount().

void QHeaderView::setSectionResizeMode(QHeaderView::ResizeMode mode)

Sets the constraints on how the header can be resized to those described by the given mode.

This function was introduced in Qt 5.0.

See also sectionResizeMode(), length(), and sectionResized().

void QHeaderView::setSectionResizeMode(int logicalIndex, QHeaderView::ResizeMode mode)

Sets the constraints on how the section specified by logicalIndex in the header can be resized to those described by the given mode. The logical index should exist at the time this function is called.

Note: This setting will be ignored for the last section if the stretchLastSection property is set to true. This is the default for the horizontal headers provided by QTreeView.

This function was introduced in Qt 5.0.

See also setStretchLastSection() and resizeContentsPrecision().

void QHeaderView::setSectionsClickable(bool clickable)

If clickable is true, the header will respond to single clicks.

This function was introduced in Qt 5.0.

See also sectionsClickable(), sectionClicked(), sectionPressed(), and setSortIndicatorShown().

void QHeaderView::setSectionsMovable(bool movable)

If movable is true, the header sections may be moved by the user; otherwise they are fixed in place.

When used in combination with QTreeView, the first column is not movable (since it contains the tree structure), by default. You can make it movable with setFirstSectionMovable(true).

This function was introduced in Qt 5.0.

See also sectionsMovable(), sectionMoved(), and setFirstSectionMovable().

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

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

Selects the items in the given rect according to the specified flags.

The base class implementation does nothing.

void QHeaderView::setSortIndicator(int logicalIndex, Qt::SortOrder order)

Sets the sort indicator for the section specified by the given logicalIndex in the direction specified by order, and removes the sort indicator from any other section that was showing it.

logicalIndex may be -1, in which case no sort indicator will be shown and the model will return to its natural, unsorted order. Note that not all models support this and may even crash in this case.

See also sortIndicatorSection() and sortIndicatorOrder().

[override virtual] void QHeaderView::setVisible(bool v)

Reimplements an access function for property: QWidget::visible.

void QHeaderView::showSection(int logicalIndex)

Shows the section specified by logicalIndex.

See also hideSection(), isSectionHidden(), hiddenSectionCount(), and setSectionHidden().

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

Reimplements: QAbstractScrollArea::sizeHint() const.

Returns a suitable size hint for this header.

See also sectionSizeHint().

Qt::SortOrder QHeaderView::sortIndicatorOrder() const

Returns the order for the sort indicator. If no section has a sort indicator the return value of this function is undefined.

See also setSortIndicator() and sortIndicatorSection().

int QHeaderView::sortIndicatorSection() const

Returns the logical index of the section that has a sort indicator. By default this is section 0.

See also setSortIndicator(), sortIndicatorOrder(), and setSortIndicatorShown().

int QHeaderView::stretchSectionCount() const

Returns the number of sections that are set to resize mode stretch. In views, this can be used to see if the headerview needs to resize the sections when the view's geometry changes.

This function was introduced in Qt 4.1.

See also stretchLastSection.

void QHeaderView::swapSections(int first, int second)

Swaps the section at visual index first with the section at visual index second.

This function was introduced in Qt 4.2.

See also moveSection().

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

Reimplements: QAbstractItemView::verticalOffset() const.

Returns the vertical offset of the header. This is 0 for horizontal headers.

See also offset().

[override virtual protected] bool QHeaderView::viewportEvent(QEvent *e)

Reimplements: QAbstractItemView::viewportEvent(QEvent *event).

int QHeaderView::visualIndex(int logicalIndex) const

Returns the visual index position of the section specified by the given logicalIndex, or -1 otherwise.

Hidden sections still have valid visual indexes.

See also logicalIndex().

int QHeaderView::visualIndexAt(int position) const

Returns the visual index of the section that covers the given position in the viewport.

See also logicalIndexAt().