From 6dae79b8a06e3eb78ca7ae600c3341a47bf63ede Mon Sep 17 00:00:00 2001
From: John Henry Beale <beale_j@saresc-cons-01.psi.ch>
Date: Fri, 15 May 2026 15:07:28 +0200
Subject: [PATCH] added additional safety to the Move backlight button so that
 the detector always moves to the out position 1st before the post-tube moves

---
 swissmx.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/swissmx.py b/swissmx.py
index cd6a688..d23ed72 100755
--- a/swissmx.py
+++ b/swissmx.py
@@ -879,6 +879,8 @@ class WndSwissMx(QMainWindow, Ui_MainWindow):
   def cb_move_backlight_safe(self, pos):
     app=QApplication.instance()
     bl=app._backlight
+    # any move of backlight requires detector move first
+    self.move_detector("out")       
     # any move of backlight requires post sample tube out
     self.move_post_tube("out")
     bl.move(pos)