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    40 ****************************************************************************/

    41 

    42 #ifndef QCHECKBOX_H

    43 #define QCHECKBOX_H

    44 

    45 #include <QtGui/qabstractbutton.h>

    46 

    47 QT_BEGIN_HEADER

    48 

    49 QT_BEGIN_NAMESPACE

    50 

    51 QT_MODULE(Gui)

    52 

    53 class QCheckBoxPrivate;

    54 class QStyleOptionButton;

    55 

    56 class Q_GUI_EXPORT QCheckBox : public QAbstractButton

    57 {

    58     Q_OBJECT

    59 

    60     Q_PROPERTY(bool tristate READ isTristate WRITE setTristate)

    61 

    62 public:

    63     explicit QCheckBox(QWidget *parent=0);

    64     explicit QCheckBox(const QString &text, QWidget *parent=0);

    65 

    66 

    67     QSize sizeHint() const;

    68 

    69     void setTristate(bool y = true);

    70     bool isTristate() const;

    71 

    72     Qt::CheckState checkState() const;

    73     void setCheckState(Qt::CheckState state);

    74 

    75 Q_SIGNALS:

    76     void stateChanged(int);

    77 

    78 protected:

    79     bool event(QEvent *e);

    80     bool hitButton(const QPoint &pos) const;

    81     void checkStateSet();

    82     void nextCheckState();

    83     void paintEvent(QPaintEvent *);

    84     void mouseMoveEvent(QMouseEvent *);

    85     void initStyleOption(QStyleOptionButton *option) const;

    86 

    87 #ifdef QT3_SUPPORT

    88 public:

    89     enum ToggleState {

    90         Off =      Qt::Unchecked,

    91         NoChange = Qt::PartiallyChecked,

    92         On =       Qt::Checked

    93     };

    94     inline QT3_SUPPORT ToggleState state() const

    95         { return static_cast<QCheckBox::ToggleState>(static_cast<int>(checkState())); }

    96     inline QT3_SUPPORT void setState(ToggleState state)

    97         { setCheckState(static_cast<Qt::CheckState>(static_cast<int>(state))); }

    98     inline QT3_SUPPORT void setNoChange()

    99         { setCheckState(Qt::PartiallyChecked); }

   100     QT3_SUPPORT_CONSTRUCTOR QCheckBox(QWidget *parent, const char* name);

   101     QT3_SUPPORT_CONSTRUCTOR QCheckBox(const QString &text, QWidget *parent, const char* name);

   102 #endif

   103 

   104 private:

   105     Q_DECLARE_PRIVATE(QCheckBox)

   106     Q_DISABLE_COPY(QCheckBox)

   107 };

   108 

   109 QT_END_NAMESPACE

   110 

   111 QT_END_HEADER

   112 

   113 #endif // QCHECKBOX_H