From 179998a8a2099e56ab8303f7e52ebfd11af71b1d Mon Sep 17 00:00:00 2001
From: Alexandr Kondratev <theg4sh@gmail.com>
Date: Tue, 5 Jul 2016 12:02:16 +0300
Subject: [PATCH] highgui module: window_QT mouse wheel reuse variable delta
 instead call evnt->delta()

---
 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 30f99d7708..70f3586210 100644
--- a/modules/highgui/src/window_QT.cpp
+++ b/modules/highgui/src/window_QT.cpp
@@ -2637,7 +2637,7 @@ void DefaultViewPort::wheelEvent(QWheelEvent* evnt)
     icvmouseHandler(evnt, mouse_wheel, cv_event, flags);
     icvmouseProcessing(QPoingF(pt), cv_event, flags);
 
-    scaleView(evnt->delta() / 240.0, pt);
+    scaleView(delta / 240.0, pt);
     viewport()->update();
 
     QWidget::mouseWheel(evnt);