From 3b9a9e02bc302eb96e28cae24990528ce4b9cbaf Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Mon, 10 Sep 2018 12:32:14 +0200
Subject: [PATCH] close all top-level widgets when about to quit event loop

---
 src/Gui/MainWindow.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Gui/MainWindow.cpp b/src/Gui/MainWindow.cpp
index 68e2c1f9c7..aea5651005 100644
--- a/src/Gui/MainWindow.cpp
+++ b/src/Gui/MainWindow.cpp
@@ -976,8 +976,10 @@ void MainWindow::closeEvent (QCloseEvent * e)
         }
 
         /*emit*/ mainWindowClosed();
-        if (this->property("QuitOnClosed").isValid())
+        if (this->property("QuitOnClosed").isValid()) {
+            QApplication::closeAllWindows();
             qApp->quit(); // stop the event loop
+        }
     }
 }