Detailed Description
The QTableWidget class provides an item-based table view with a default model.
Table widgets provide standard table display facilities for applications. The items in a QTableWidget are provided by QTableWidgetItem.
If you want a table that uses your own data model you should use QTableView rather than this class.
Table widgets can be constructed with the required numbers of rows and columns:
tableWidget = new QTableWidget(12, 3, this);
Alternatively, tables can be constructed without a given size and resized later:
tableWidget = new QTableWidget(this);
tableWidget->setRowCount(10);
tableWidget->setColumnCount(5);
Items are created ouside the table (with no parent widget) and inserted into the table with setItem():
QTableWidgetItem *newItem = new QTableWidgetItem(tr("%1").arg(
(row+1)*(column+1)));
tableWidget->setItem(row, column, newItem);
Tables can be given both horizontal and vertical headers. The simplest way to create the headers is to supply a list of strings to the setHorizontalHeaderLabels() and setVerticalHeaderLabels() functions. These will provide simple textual headers for the table's columns and rows. More sophisticated headers can be created from existing table items that are usually constructed outside the table. For example, we can construct a table item with an icon and aligned text, and use it as the header for a particular column:
QTableWidgetItem *cubesHeaderItem = new QTableWidgetItem(tr("Cubes"));
cubesHeaderItem->setIcon(QIcon(QPixmap(":/Images/cubed.png")));
cubesHeaderItem->setTextAlignment(Qt::AlignVCenter);
The number of rows in the table can be found with rowCount(), and the number of columns with columnCount(). The table can be cleared with the clear() function.
See also QTableWidgetItem and Model/View Programming.
Property Documentation
columnCount : int
This property holds the number of columns in the table.
Access functions:
- int columnCount () const
- void setColumnCount ( int columns )
rowCount : int
This property holds the number of rows in the table.
Access functions:
- int rowCount () const
- void setRowCount ( int rows )
sortingEnabled : bool
This property holds whether the items in the table can be sorted by clicking on the horizontal header.
Access functions:
- bool isSortingEnabled () const
- void setSortingEnabled ( bool enable )
Member Function Documentation
QTableWidget::QTableWidget ( QWidget * parent = 0 )
Creates a new table view with the given parent.
QTableWidget::QTableWidget ( int rows, int columns, QWidget * parent = 0 )
Creates a new table view with the given rows and columns, and with the given parent.
QTableWidget::~QTableWidget ()
Destroys this QTableWidget.
void QTableWidget::clear () [slot]
Removes all items and selections in the view.
void QTableWidget::closePersistentEditor ( QTableWidgetItem * item )
Closes the persistent editor for item.
See also openPersistentEditor().
int QTableWidget::column ( const QTableWidgetItem * item ) const
Returns the column for the item.
int QTableWidget::currentColumn () const
Returns the column of the current item.
QTableWidgetItem * QTableWidget::currentItem () const
Returns the current item.
See also setCurrentItem().
void QTableWidget::currentItemChanged ( QTableWidgetItem * current, QTableWidgetItem * previous ) [signal]
This signal is emitted whenever the current item changes. The previous item is the item that previously had the focus, current is the new current item.
int QTableWidget::currentRow () const
Returns the row of the current item.
bool QTableWidget::dropMimeData ( int row, int column, const QMimeData * data, Qt::DropAction action ) [virtual protected]
Handles the data supplied by a drag and drop operation that ended with the given action in the given row and column.
See also supportedDropActions().
void QTableWidget::editItem ( QTableWidgetItem * item )
Starts editing the item if it is editable.
Finds items that matches the text using the given flags.
Returns the horizontal header item for column column.
See also setHorizontalHeaderItem().
QModelIndex QTableWidget::indexFromItem ( QTableWidgetItem * item ) const [protected]
Returns the QModelIndex assocated with the given item.
void QTableWidget::insertColumn ( int column ) [slot]
Inserts an empty column into the table at column.
void QTableWidget::insertRow ( int row ) [slot]
Inserts an empty row into the table at row.
bool QTableWidget::isItemSelected ( const QTableWidgetItem * item ) const
Returns true if the item is selected, otherwise returns false.
QTableWidgetItem * QTableWidget::item ( int row, int column ) const
Returns the item for the given row and column.
See also setItem().
void QTableWidget::itemActivated ( QTableWidgetItem * item ) [signal]
This signal is emitted when the specified item has been activated
Returns a pointer to the item at the coordinates p.
QTableWidgetItem * QTableWidget::itemAt ( int ax, int ay ) const
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
Returns the item at the position (ax, ay) in the table's coordinate system.
void QTableWidget::itemChanged ( QTableWidgetItem * item ) [signal]
This signal is emitted whenever the data of item has changed.
void QTableWidget::itemClicked ( QTableWidgetItem * item ) [signal]
This signal is emitted whenever an item in the table is clicked. The item specified is the item that was clicked.
void QTableWidget::itemDoubleClicked ( QTableWidgetItem * item ) [signal]
This signal is emitted whenever an item in the table is double clicked. The item specified is the item that was double clicked.
void QTableWidget::itemEntered ( QTableWidgetItem * item ) [signal]
This signal is emitted when the mouse cursor enters an item. The item is the item entered.
This signal is only emitted when mouseTracking is turned on, or when a mouse button is pressed while moving into an item.
QTableWidgetItem * QTableWidget::itemFromIndex ( const QModelIndex & index ) const [protected]
Returns a pointer to the QTableWidgetItem assocated with the given index.
void QTableWidget::itemPressed ( QTableWidgetItem * item ) [signal]
This signal is emitted whenever an item in the table is pressed. The item specified is the item that was pressed.
const QTableWidgetItem * QTableWidget::itemPrototype () const
Returns the item prototype used by the table.
Copies of the item prototype are returned by the createItem() function.
See also setItemPrototype().
void QTableWidget::itemSelectionChanged () [signal]
This signal is emitted whenever the selection changes.
See also selectedItems() and isItemSelected().
Returns a list of pointers to the items contained in the data object. If the object was not created by a QTreeWidget in the same process, the list is empty.
QMimeData * QTableWidget::mimeData ( const QList<QTableWidgetItem *> items ) const [virtual protected]
Returns an object that contains a serialized description of the specified items. The format used to describe the items is obtained from the mimeTypes() function.
If the list of items is empty, 0 is returned rather than a serialized empty list.
QStringList QTableWidget::mimeTypes () const [virtual protected]
Returns a list of MIME types that can be used to describe a list of tablewidget items.
See also mimeData().
void QTableWidget::openPersistentEditor ( QTableWidgetItem * item )
Opens an editor for the give item. The editor remains open after editing.
See also closePersistentEditor().
void QTableWidget::removeColumn ( int column ) [slot]
Removes the column column and all its items from the table.
void QTableWidget::removeRow ( int row ) [slot]
Removes the row row and all its items from the table.
int QTableWidget::row ( const QTableWidgetItem * item ) const
Returns the row for the item.
Returns a list of all selected items.
Returns a list of all selected ranges.
See also QTableWidgetSelectionRange.
void QTableWidget::setCurrentItem ( QTableWidgetItem * item )
Sets the current item to item.
See also currentItem().
Sets the horizontal header item for column column to item.
See also horizontalHeaderItem().
Sets the horizontal header labels using labels.
void QTableWidget::setItem ( int row, int column, QTableWidgetItem * item )
Sets the item for the given row and column to item.
See also item().
void QTableWidget::setItemPrototype ( const QTableWidgetItem * item )
Sets the item prototype for the table to the specified item.
See also itemPrototype().
void QTableWidget::setItemSelected ( const QTableWidgetItem * item, bool select )
Selects or deselects item depending on select.
See also isItemSelected().
void QTableWidget::setRangeSelected ( const QTableWidgetSelectionRange & range, bool select )
Selects or deselects the range depending on select.
Sets the vertical header item for row row to item.
See also verticalHeaderItem().
Sets the vertical header labels using labels.
void QTableWidget::sortItems ( int column, Qt::SortOrder order = Qt::AscendingOrder )
Sorts all the rows in the table widget based on column and order.
Qt::DropActions QTableWidget::supportedDropActions () const [virtual protected]
Returns the drop actions supported by this view.
See also Qt::DropActions.
QTableWidgetItem * QTableWidget::takeItem ( int row, int column )
Removes the item at row and column from the table without deleting it.
Returns the vertical header item for row row.
See also setVerticalHeaderItem().
int QTableWidget::visualColumn ( int logicalColumn ) const
Returns the visual column of the given logicalColumn.
QRect QTableWidget::visualItemRect ( const QTableWidgetItem * item ) const
Returns the rectangle on the viewport occupied by the item at item.
int QTableWidget::visualRow ( int logicalRow ) const
Returns the visual row of the given logicalRow.
