From 09f46f33daf409bb4f947721932e77d9eb5c554f Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Fri, 24 Jun 2016 10:51:34 +0100
Subject: [PATCH] Added initializer

---
 src/osgQt/QGraphicsViewAdapter.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/osgQt/QGraphicsViewAdapter.cpp b/src/osgQt/QGraphicsViewAdapter.cpp
index b248153ea..0556445f0 100644
--- a/src/osgQt/QGraphicsViewAdapter.cpp
+++ b/src/osgQt/QGraphicsViewAdapter.cpp
@@ -68,6 +68,7 @@ const QImage::Format s_imageFormat = QImage::Format_ARGB32_Premultiplied;
 QGraphicsViewAdapter::QGraphicsViewAdapter(osg::Image* image, QWidget* widget):
     _image(image),
     _backgroundWidget(0),
+    _previousButtonMask(0),
     _previousMouseX(-1),
     _previousMouseY(-1),
     _previousQtMouseX(-1),