qcheckbox.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QCHECKBOX_H
#define QCHECKBOX_H
 
#include <QtWidgets/qtwidgetsglobal.h>
#include <QtWidgets/qabstractbutton.h>
 
QT_REQUIRE_CONFIG(checkbox);
 
QT_BEGIN_NAMESPACE
 
 
class QCheckBoxPrivate;
class QStyleOptionButton;
 
class Q_WIDGETS_EXPORT QCheckBox : public QAbstractButton
{
    Q_OBJECT
 
    Q_PROPERTY(bool tristate READ isTristate WRITE setTristate)
 
public:
    explicit QCheckBox(QWidget *parent = nullptr);
    explicit QCheckBox(const QString &text, QWidget *parent = nullptr);
    ~QCheckBox();
 
    QSize sizeHint() const override;
    QSize minimumSizeHint() const override;
 
    void setTristate(bool y = true);
    bool isTristate() const;
 
    Qt::CheckState checkState() const;
    void setCheckState(Qt::CheckState state);
 
Q_SIGNALS:
#if QT_VERSION < QT_VERSION_CHECK(7, 0, 0)
    void stateChanged(int);
#else
    void stateChanged(Qt::CheckState);
#endif
 
protected:
    bool event(QEvent *e) override;
    bool hitButton(const QPoint &pos) const override;
    void checkStateSet() override;
    void nextCheckState() override;
    void paintEvent(QPaintEvent *) override;
    void mouseMoveEvent(QMouseEvent *) override;
    virtual void initStyleOption(QStyleOptionButton *option) const;
 
 
private:
    Q_DECLARE_PRIVATE(QCheckBox)
    Q_DISABLE_COPY(QCheckBox)
    friend class QAccessibleButton;
};
 
QT_END_NAMESPACE
 
#endif // QCHECKBOX_H