From 96503991b17701b132a8ee88017dc8f5236563fa Mon Sep 17 00:00:00 2001
From: Ilya Lysenkov <no@email>
Date: Wed, 15 Jun 2011 09:27:38 +0000
Subject: [PATCH] Fixed wheel zoom with QT (ticket #733)

---
 modules/highgui/src/window_QT.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/highgui/src/window_QT.cpp b/modules/highgui/src/window_QT.cpp
index 3727a64e69..78bc77b3f9 100755
--- a/modules/highgui/src/window_QT.cpp
+++ b/modules/highgui/src/window_QT.cpp
@@ -2511,7 +2511,7 @@ void ViewPort::scaleView(qreal factor,QPointF center)
 
 void ViewPort::wheelEvent(QWheelEvent *event)
 {
-	scaleView( -event->delta() / 240.0,event->pos());
+	scaleView( event->delta() / 240.0,event->pos());
 	viewport()->update();
 }