From 1b0f7488d0bec9561cdb6609496fdace793ca393 Mon Sep 17 00:00:00 2001
From: MikeTheWatchGuy <mike_barnett@hotmail.com>
Date: Tue, 21 Aug 2018 20:21:27 -0400
Subject: [PATCH] Fix mousewheel up bug

---
 PySimpleGUI.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/PySimpleGUI.py b/PySimpleGUI.py
index 8cbed783..5b8202ac 100644
--- a/PySimpleGUI.py
+++ b/PySimpleGUI.py
@@ -1047,7 +1047,7 @@ class FlexForm:
     def MouseWheelCallback(self, event ):
         self.LastButtonClicked = None
         self.FormRemainedOpen = True
-        self.LastKeyboardEvent = 'MouseWheel:' + 'Down' if event.delta < 0 else 'Up'
+        self.LastKeyboardEvent = 'MouseWheel:Down' if event.delta < 0 else 'MouseWheel:Up'
         if not self.NonBlocking:
             BuildResults(self, False, self)
         self.TKroot.quit()