From a2902a527aaf41cdb9151d0726281f6d914cba9b Mon Sep 17 00:00:00 2001
From: don bright <hugh.m.bright@gmail.com>
Date: Sat, 2 Jun 2012 18:29:50 +0200
Subject: fix glview to work with QT versions less than 4.7


diff --git a/src/glview.cc b/src/glview.cc
index 82ca084..bea5856 100644
--- a/src/glview.cc
+++ b/src/glview.cc
@@ -600,7 +600,11 @@ void GLView::mouseMoveEvent(QMouseEvent *event)
       double mz = -(dy) * viewer_distance/1000;
 
 			double my = 0;
+#if (QT_VERSION < QT_VERSION_CHECK(4, 7, 0))
 			if (event->buttons() & Qt::MidButton) {
+#else
+			if (event->buttons() & Qt::MiddleButton) {
+#endif
 				my = mz;
 				mz = 0;
 				// actually lock the x-position
-- 
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