Reduce usage of QDesktopWidget to resolve screen properties in QtWidgets

Removes the need to initialize QDesktopWidget, just to look up which
screen a widget would map to, the geometry of a screen, number of
screens, etc.

Change-Id: Ieb153b9ff6d3fba645fc528d6e430e8392f990bf
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@qt.io>
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/widgets/widgets/qfontcombobox.cpp b/src/widgets/widgets/qfontcombobox.cpp
index f206d01999..1c56c19c8f 100644
--- a/src/widgets/widgets/qfontcombobox.cpp
+++ b/src/widgets/widgets/qfontcombobox.cpp
@@ -47,6 +47,7 @@
 #include <qapplication.h>
 #include <private/qcombobox_p.h>
 #include <QDesktopWidget>
+#include <private/qdesktopwidget_p.h>
 #include <qdebug.h>
 
 QT_BEGIN_NAMESPACE
@@ -540,7 +541,7 @@ bool QFontComboBox::event(QEvent *e)
         QListView *lview = qobject_cast<QListView*>(view());
         if (lview) {
             lview->window()->setFixedWidth(qMin(width() * 5 / 3,
-                               QApplication::desktop()->availableGeometry(lview).width()));
+                               QDesktopWidgetPrivate::availableGeometry(lview).width()));
         }
     }
     return QComboBox::event(e);