fixed minor issue with the piechart demo

The rubberband was not set on the viewport, leading to an offset when
adding margins.

Task-number: 251892
Reviewed-by: Alexis

1 files changed, 1 insertions, 1 deletions

diff --git a/examples/itemviews/chart/pieview.cpp b/examples/itemviews/chart/pieview.cpp
index 6b62f25c67..48f40735db 100644
--- a/examples/itemviews/chart/pieview.cpp
+++ b/examples/itemviews/chart/pieview.cpp
@@ -254,7 +254,7 @@ void PieView::mousePressEvent(QMouseEvent *event)
     QAbstractItemView::mousePressEvent(event);
     origin = event->pos();
     if (!rubberBand)
-        rubberBand = new QRubberBand(QRubberBand::Rectangle, this);
+        rubberBand = new QRubberBand(QRubberBand::Rectangle, viewport());
     rubberBand->setGeometry(QRect(origin, QSize()));
     rubberBand->show();
 }