QtCore.IQAbstractItemModelSignals Interface Reference

Inheritance diagram for QtCore.IQAbstractItemModelSignals:

Collaboration diagram for QtCore.IQAbstractItemModelSignals:

Public Member Functions
void	DataChanged (QModelIndex topLeft, QModelIndex bottomRight)
void	HeaderDataChanged (Qt.Orientation orientation, int first, int last)
void	LayoutChanged ()
void	LayoutAboutToBeChanged ()
void	RowsAboutToBeInserted (QModelIndex parent, int first, int last)
void	RowsInserted (QModelIndex parent, int first, int last)
void	RowsAboutToBeRemoved (QModelIndex parent, int first, int last)
void	RowsRemoved (QModelIndex parent, int first, int last)
void	ColumnsAboutToBeInserted (QModelIndex parent, int first, int last)
void	ColumnsInserted (QModelIndex parent, int first, int last)
void	ColumnsAboutToBeRemoved (QModelIndex parent, int first, int last)
void	ColumnsRemoved (QModelIndex parent, int first, int last)
void	ModelAboutToBeReset ()
void	ModelReset ()
void	RowsAboutToBeMoved (QModelIndex sourceParent, int sourceStart, int sourceEnd, QModelIndex destinationParent, int destinationRow)
void	RowsMoved (QModelIndex parent, int start, int end, QModelIndex destination, int row)
void	ColumnsAboutToBeMoved (QModelIndex sourceParent, int sourceStart, int sourceEnd, QModelIndex destinationParent, int destinationColumn)
void	ColumnsMoved (QModelIndex parent, int start, int end, QModelIndex destination, int column)
Public Member Functions inherited from QtCore.IQObjectSignals
void	Destroyed (QObject arg1)
void	Destroyed ()

Member Function Documentation

void QtCore.IQAbstractItemModelSignals.ColumnsAboutToBeInserted	(	QModelIndex	parent,
		int	first,
		int	last
	)

void QtCore.IQAbstractItemModelSignals.ColumnsAboutToBeMoved	(	QModelIndex	sourceParent,
		int	sourceStart,
		int	sourceEnd,
		QModelIndex	destinationParent,
		int	destinationColumn
	)

void QtCore.IQAbstractItemModelSignals.ColumnsAboutToBeRemoved	(	QModelIndex	parent,
		int	first,
		int	last
	)

void QtCore.IQAbstractItemModelSignals.ColumnsInserted	(	QModelIndex	parent,
		int	first,
		int	last
	)

void QtCore.IQAbstractItemModelSignals.ColumnsMoved	(	QModelIndex	parent,
		int	start,
		int	end,
		QModelIndex	destination,
		int	column
	)

void QtCore.IQAbstractItemModelSignals.ColumnsRemoved	(	QModelIndex	parent,
		int	first,
		int	last
	)

void QtCore.IQAbstractItemModelSignals.DataChanged	(	QModelIndex	topLeft,
		QModelIndex	bottomRight
	)

This signal is emitted whenever the data in an existing item changes.

If the items are of the same parent, the affected ones are those between topLeft and bottomRight inclusive. If the items do not have the same parent, the behavior is undefined.

When reimplementing the setData() function, this signal must be emitted explicitly.

See also headerDataChanged(), setData(), and layoutChanged().

void QtCore.IQAbstractItemModelSignals.HeaderDataChanged	(	Qt.Orientation	orientation,
		int	first,
		int	last
	)

This signal is emitted whenever a header is changed. The orientation indicates whether the horizontal or vertical header has changed. The sections in the header from the first to the last need to be updated.

When reimplementing the setHeaderData() function, this signal must be emitted explicitly.

If you are changing the number of columns or rows you do not need to emit this signal, but use the begin/end functions (refer to the section on subclassing in the QAbstractItemModel class description for details).

See also headerData(), setHeaderData(), and dataChanged().

void QtCore.IQAbstractItemModelSignals.LayoutAboutToBeChanged

(

)

This signal is emitted just before the layout of a model is changed. Components connected to this signal use it to adapt to changes in the model's layout.

Subclasses should update any persistent model indexes after emitting layoutAboutToBeChanged().

This function was introduced in Qt 4.2.

See also layoutChanged() and changePersistentIndex().

void QtCore.IQAbstractItemModelSignals.LayoutChanged

(

)

This signal is emitted whenever the layout of items exposed by the model has changed; for example, when the model has been sorted. When this signal is received by a view, it should update the layout of items to reflect this change.

When subclassing QAbstractItemModel or QAbstractProxyModel, ensure that you emit layoutAboutToBeChanged() before changing the order of items or altering the structure of the data you expose to views, and emit layoutChanged() after changing the layout.

Subclasses should update any persistent model indexes before emitting layoutChanged(). In other words, when the structure changes:

emit layoutAboutToBeChanged

Remember the QModelIndex that will change

Update your internal data

Call changePersistentIndex()

emit layoutChanged

See also layoutAboutToBeChanged(), dataChanged(), headerDataChanged(), modelReset(), and changePersistentIndex().

void QtCore.IQAbstractItemModelSignals.ModelAboutToBeReset

(

)

void QtCore.IQAbstractItemModelSignals.ModelReset

(

)

void QtCore.IQAbstractItemModelSignals.RowsAboutToBeInserted	(	QModelIndex	parent,
		int	first,
		int	last
	)

void QtCore.IQAbstractItemModelSignals.RowsAboutToBeMoved	(	QModelIndex	sourceParent,
		int	sourceStart,
		int	sourceEnd,
		QModelIndex	destinationParent,
		int	destinationRow
	)

void QtCore.IQAbstractItemModelSignals.RowsAboutToBeRemoved	(	QModelIndex	parent,
		int	first,
		int	last
	)

void QtCore.IQAbstractItemModelSignals.RowsInserted	(	QModelIndex	parent,
		int	first,
		int	last
	)

void QtCore.IQAbstractItemModelSignals.RowsMoved	(	QModelIndex	parent,
		int	start,
		int	end,
		QModelIndex	destination,
		int	row
	)

void QtCore.IQAbstractItemModelSignals.RowsRemoved	(	QModelIndex	parent,
		int	first,
		int	last
	)