Qt 4.8
qdesktopwidget.cpp
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41 
42 #include "qglobal.h"
43 #include "qdesktopwidget.h"
44 #include "qwidget_p.h"
45 
47 
49 {
50  if (!widget) {
51  qWarning("QDesktopWidget::screenGeometry(): Attempt "
52  "to get the screen geometry of a null widget");
53  return QRect();
54  }
56  if (rect.isNull())
57  return screenGeometry(screenNumber(widget));
58  else return rect;
59 }
60 
62 {
63  if (!widget) {
64  qWarning("QDesktopWidget::availableGeometry(): Attempt "
65  "to get the available geometry of a null widget");
66  return QRect();
67  }
69  if (rect.isNull())
70  return availableGeometry(screenNumber(widget));
71  else
72  return rect;
73 }
74 
76 
bool isNull() const
Returns true if the rectangle is a null rectangle, otherwise returns false.
Definition: qrect.h:231
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
QPointer< QWidget > widget
The QWidget class is the base class of all user interface objects.
Definition: qwidget.h:150
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
Q_CORE_EXPORT void qWarning(const char *,...)
QRect rect() const
const QRect screenGeometry(int screen=-1) const
static QRect screenGeometry(const QWidget *widget)
Definition: qwidget_p.h:600
The QRect class defines a rectangle in the plane using integer precision.
Definition: qrect.h:58
int screenNumber(const QWidget *widget=0) const
const QRect availableGeometry(int screen=-1) const