QRadioButton Class Reference


The QRadioButton widget provides a radio button with a text label. More...

#include <qradiobt.h>

Inherits QButton.

List of all member functions.

Public Members

Protected Members


Detailed Description

The QRadioButton widget provides a radio button with a text label.

QRadioButton and QCheckBox are both toggle buttons, that is, they can be switched on (checked) or off (unchecked). Unlike check boxes, radio buttons are normally organized in groups where only one radio button can be switched on at a time.

The QButtonGroup widget is very useful for defining groups of radio buttons.

Examples: drawdemo/drawdemo.cpp xform/xform.cpp pref/pref.cpp widgets/widgets.cpp


Member Function Documentation

QRadioButton::QRadioButton ( QWidget * parent=0, const char * name=0 )

Constructs a radio button with no text.

The parent and name arguments are sent to the QWidget constructor.

QRadioButton::QRadioButton ( const char * text, QWidget * parent=0, const char * name=0 )

Constructs a radio button with a text.

The parent and name arguments are sent to the QWidget constructor.

void QRadioButton::drawButton ( QPainter * paint ) [virtual protected]

Draws the radio button, but not the button label.

See also: drawButtonLabel().

Reimplemented from QButton.

void QRadioButton::drawButtonLabel ( QPainter * p ) [virtual protected]

Draws the radio button label.

See also: drawButton().

Reimplemented from QButton.

bool QRadioButton::hitButton ( const QPoint & pos ) const [virtual protected]

Reimplements QButton::hitButton(). This function is implemented to prevent a radio button that is on from being switched off.

Reimplemented from QButton.

bool QRadioButton::isChecked () const

Returns TRUE if the radio button is checked, or FALSE if it is not checked.

See also: setChecked().

void QRadioButton::keyPressEvent ( QKeyEvent * e ) [virtual protected]

Reimplemented to ignore toggle-off key events.

Reimplemented from QWidget.

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

Handles mouse release events for the radio button.

Reimplemented from QWidget.

void QRadioButton::setChecked ( bool check )

Checks the radio button if check is TRUE, or unchecks it if check is FALSE.

Calling this function does not affect other radio buttons unless a radio button group has been defined using the QButtonGroup widget.

See also: isChecked().

Examples: drawdemo/drawdemo.cpp widgets/widgets.cpp

QSize QRadioButton::sizeHint () const [virtual]

Returns a size which fits the contents of the radio button.

Examples: widgets/widgets.cpp

Reimplemented from QWidget.


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