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    41 

    42 #ifndef QDESKTOPWIDGET_H

    43 #define QDESKTOPWIDGET_H

    44 

    45 #include <QtGui/qwidget.h>

    46 

    47 QT_BEGIN_HEADER

    48 

    49 QT_BEGIN_NAMESPACE

    50 

    51 QT_MODULE(Gui)

    52 

    53 class QApplication;

    54 class QDesktopWidgetPrivate;

    55 

    56 class Q_GUI_EXPORT QDesktopWidget : public QWidget

    57 {

    58     Q_OBJECT

    59     Q_PROPERTY(bool virtualDesktop READ isVirtualDesktop)

    60     Q_PROPERTY(int screenCount READ screenCount NOTIFY screenCountChanged)

    61     Q_PROPERTY(int primaryScreen READ primaryScreen)

    62 public:

    63     QDesktopWidget();

    64     ~QDesktopWidget();

    65 

    66     bool isVirtualDesktop() const;

    67 

    68     int numScreens() const;

    69     int screenCount() const;

    70     int primaryScreen() const;

    71 

    72     int screenNumber(const QWidget *widget = 0) const;

    73     int screenNumber(const QPoint &) const;

    74 

    75     QWidget *screen(int screen = -1);

    76 

    77     const QRect screenGeometry(int screen = -1) const;

    78     const QRect screenGeometry(const QWidget *widget) const;

    79     const QRect screenGeometry(const QPoint &point) const

    80     { return screenGeometry(screenNumber(point)); }

    81 

    82     const QRect availableGeometry(int screen = -1) const;

    83     const QRect availableGeometry(const QWidget *widget) const;

    84     const QRect availableGeometry(const QPoint &point) const

    85     { return availableGeometry(screenNumber(point)); }

    86 

    87 Q_SIGNALS:

    88     void resized(int);

    89     void workAreaResized(int);

    90     void screenCountChanged(int);

    91 

    92 protected:

    93     void resizeEvent(QResizeEvent *e);

    94 

    95 private:

    96     Q_DISABLE_COPY(QDesktopWidget)

    97     Q_DECLARE_PRIVATE(QDesktopWidget)

    98 

    99     friend class QApplication;

   100     friend class QApplicationPrivate;

   101 };

   102 

   103 inline int QDesktopWidget::screenCount() const

   104 { return numScreens(); }

   105 

   106 QT_END_NAMESPACE

   107 

   108 QT_END_HEADER

   109 

   110 #endif // QDESKTOPWIDGET_H