Qt Toolkit - QCheckListItem Class

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# QCheckListItem Class Reference

The QCheckListItem class implements checkable list view items. More...

`#include <qlistview.h>`

Inherits QListViewItem.

List of all member functions.

## Public Members

- enum Type { RadioButton, CheckBox, Controller }
- QCheckListItem ( QCheckListItem * parent, const QString & text, Type = Controller )
- QCheckListItem ( QListViewItem * parent, const QString & text, Type = Controller )
- QCheckListItem ( QListView * parent, const QString & text, Type = Controller )
- QCheckListItem ( QListViewItem * parent, const QString & text, const QPixmap & )
- QCheckListItem ( QListView * parent, const QString & text, const QPixmap & )
- ~QCheckListItem ()
- virtual void paintCell ( QPainter *, const QColorGroup & cg, int column, int width, int alignment )
- virtual void paintFocus ( QPainter *, const QColorGroup & cg, const QRect & r )
- virtual void setup ()
- virtual void setOn ( bool )
- bool isOn () const
- Type type () const
- QString text () const
- void setEnabled ( bool b )
- bool isEnabled () const

## Protected Members

- virtual void activate ()
- void turnOffChild ()
- virtual void stateChange ( bool )

## Detailed Description

The QCheckListItem class implements checkable list view items.

There are three types of check list items: CheckBox, RadioButton and Controller.

Checkboxes may be inserted at top level in the list view. A radio button must be child of a controller.

## Member Type Documentation

### QCheckListItem::Type

This enum type defines the modes in which a QCheckListItem can be:

- `RadioButton` -
- `CheckBox` -
- `Controller` -

## Member Function Documentation

### QCheckListItem::QCheckListItem ( QListView * parent, const QString & text, Type tt = Controller )

Constructs a checkable item with parent parent, text text and type tt. Note that tt must not be RadioButton, if so it will not toggle.

### QCheckListItem::QCheckListItem ( QListView * parent, const QString & text, const QPixmap & p )

Constructs a Controller item with parent parent, text text and pixmap p.

### QCheckListItem::QCheckListItem ( QListViewItem * parent, const QString & text, Type tt = Controller )

Constructs a checkable item with parent parent, text text and type tt. Note that this item must not be a a RadioButton. Radio buttons must be children on a Controller.

### QCheckListItem::QCheckListItem ( QListViewItem * parent, const QString & text, const QPixmap & p )

Constructs a Controller item with parent parent, text text and pixmap p.

### QCheckListItem::QCheckListItem ( QCheckListItem * parent, const QString & text, Type tt = Controller )

Constructs a checkable item with parent parent, text text and type tt. Note that a RadioButton must be child of a Controller, otherwise it will not toggle.

### QCheckListItem::~QCheckListItem ()

Destroys the item, deleting all its children, freeing up all allocated resources.

### void QCheckListItem::activate () `[virtual protected]`

Toggle checkbox, or set radio button on.

Reimplemented from QListViewItem.

### bool QCheckListItem::isEnabled () const

Retuns whether the item is enabled or disabled.

See also setEnabled().

### bool QCheckListItem::isOn () const

Returns TRUE if this item is toggled on, FALSE otherwise.

### void QCheckListItem::paintBranches ( QPainter * p, const QColorGroup & g, int w, int y, int h, GUIStyle s ) `[virtual protected]`

Reimplemented for internal reasons; the API is not affected.

Reimplemented from QListViewItem.

### void QCheckListItem::paintCell ( QPainter * p, const QColorGroup & cg, int column, int width, int align ) `[virtual]`

Paints this item.

Reimplemented from QListViewItem.

### void QCheckListItem::paintFocus ( QPainter * p, const QColorGroup & cg, const QRect & r ) `[virtual]`

Draws the focus rectangle.

### void QCheckListItem::setEnabled ( bool b )

Enables/Disables the item depending on what you pass as b parameter. If the item is disabled, the user can't change the state (see setOn()/isOn()) of the item.

### void QCheckListItem::setOn ( bool b ) `[virtual]`

Sets this button on if b is TRUE, off otherwise. Maintains radio button exclusivity.

### void QCheckListItem::setup () `[virtual]`

Performs setup.

Reimplemented from QListViewItem.

### void QCheckListItem::stateChange ( bool ) `[virtual protected]`

This virtual function is called when the item changes its on/off state.

### QString QCheckListItem::text () const

Returns the text of this item.

### QString QCheckListItem::text ( int n ) const `[virtual]`

Reimplemented for internal reasons; the API is not affected.

Reimplemented from QListViewItem.

### void QCheckListItem::turnOffChild () `[protected]`

If this is a Controller that has RadioButton children, turn off the child that is on.

### QCheckListItem::Type QCheckListItem::type() const

Returns the type of this item.

### int QCheckListItem::width ( const QFontMetrics & fm, const QListView * lv, int column ) const `[virtual]`

Reimplemented for internal reasons; the API is not affected.

Reimplemented from QListViewItem.

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