QRadioButton Class

The QRadioButton class provides a radio button with a text label. More…

List of all members, including inherited members

Public Functions

Reimplemented Public Functions

Reimplemented Protected Functions

Detailed Description

Radio buttons that have the same parent widget form a group in which only one is checked: checking one unchecks the others. Put the buttons of a group in a QGroupBox, or in a widget of their own, to have several groups in a window. The arrow keys move the choice from one button of the group to the next.

QGroupBox *size = new QGroupBox("Size", window);
QRadioButton *small = new QRadioButton("Small", size);
QRadioButton *large = new QRadioButton("Large", size);
small->setChecked(true);

Radio buttons: not chosen, chosen, with the keyboard focus, and disabled.

See also QAbstractButton, QCheckBox and QGroupBox.

Differences from Qt

Member Function Documentation

[explicit] QRadioButton::QRadioButton(QWidget *parent = nullptr)

Constructs a radio button with no text and the given parent.

[explicit] QRadioButton::QRadioButton(const QString &text, QWidget *parent = nullptr)

Constructs a radio button that shows text, with the given parent.

[override] QRadioButton::~QRadioButton()

Destroys the radio button.

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

Reimplements QAbstractButton::hitButton().

[override, protected] void QRadioButton::keyPressEvent(QKeyEvent *event)

Reimplements QAbstractButton::keyPressEvent().

[override, protected] void QRadioButton::paintEvent(QPaintEvent *event)

Reimplements QAbstractButton::paintEvent().

[override] QSize QRadioButton::sizeHint() const

Reimplements QAbstractButton::sizeHint().