Qt Reference Documentation

Q3CheckTableItem Class Reference

The Q3CheckTableItem class provides checkboxes in Q3Tables. More...

 #include <Q3CheckTableItem>

This class is part of the Qt 3 support library. It is provided to keep old source code working. We strongly advise against using it in new code. See Porting to Qt 4 for more information.

Inherits: Q3TableItem.

Public Functions

Q3CheckTableItem ( Q3Table * table, const QString & txt )
bool isChecked () const
virtual void setChecked ( bool b )

Reimplemented Public Functions

virtual QWidget * createEditor () const
virtual void paint ( QPainter * p, const QColorGroup & cg, const QRect & cr, bool selected )
virtual int rtti () const
virtual void setContentFromEditor ( QWidget * w )
virtual void setText ( const QString & t )
virtual QSize sizeHint () const

Detailed Description

The Q3CheckTableItem class provides checkboxes in Q3Tables.

A Q3CheckTableItem is a table item which looks and behaves like a checkbox. The advantage of using Q3CheckTableItems rather than real checkboxes is that a Q3CheckTableItem uses far less resources than a real checkbox would in a Q3Table. When the cell has the focus it displays a real checkbox which the user can interact with. When the cell does not have the focus the cell looks like a checkbox. Pixmaps may not be used in Q3CheckTableItems.

Q3CheckTableItem items have the edit type WhenCurrent (see EditType).

To change the checkbox's label use setText(). The checkbox can be checked and unchecked with setChecked() and its state retrieved using isChecked().

To populate a table cell with a Q3CheckTableItem use Q3Table::setItem().

Q3CheckTableItems can be distinguished from Q3TableItems and Q3ComboTableItems using their Run Time Type Identification (rtti) value.

Table Items

See also rtti(), EditType, Q3ComboTableItem, Q3TableItem, and QCheckBox.

Member Function Documentation

Q3CheckTableItem::Q3CheckTableItem ( Q3Table * table, const QString & txt )

Creates a Q3CheckTableItem with an EditType of WhenCurrent as a child of table. The checkbox is initially unchecked and its label is set to the string txt.

QWidget * Q3CheckTableItem::createEditor () const [virtual]

Reimplemented from Q3TableItem::createEditor().

bool Q3CheckTableItem::isChecked () const

Returns true if the checkbox table item is checked; otherwise returns false.

See also setChecked().

void Q3CheckTableItem::paint ( QPainter * p, const QColorGroup & cg, const QRect & cr, bool selected ) [virtual]

Reimplemented from Q3TableItem::paint().

int Q3CheckTableItem::rtti () const [virtual]

Reimplemented from Q3TableItem::rtti().

Returns 2.

Make your derived classes return their own values for rtti()to distinguish between different table item subclasses. You should use values greater than 1000, preferably a large random number, to allow for extensions to this class.

See also Q3TableItem::rtti().

void Q3CheckTableItem::setChecked ( bool b ) [virtual]

If b is true the checkbox is checked; if b is false the checkbox is unchecked.

See also isChecked().

void Q3CheckTableItem::setContentFromEditor ( QWidget * w ) [virtual]

Reimplemented from Q3TableItem::setContentFromEditor().

void Q3CheckTableItem::setText ( const QString & t ) [virtual]

Reimplemented from Q3TableItem::setText().

QSize Q3CheckTableItem::sizeHint () const [virtual]

Reimplemented from Q3TableItem::sizeHint().