From d186dceb4bf6af7917e8bd5a076859d3ab34c901 Mon Sep 17 00:00:00 2001
From: Ben Gotow <bengotow@gmail.com>
Date: Thu, 21 Jan 2016 16:36:48 -0800
Subject: [PATCH] Add correct window check for wheel events. See description

Tested that with two windows, events are fired on the correct BrowserWindow instance and not both, and that scrolling a window which is in the background works properly.
---
 atom/browser/native_window_mac.mm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/atom/browser/native_window_mac.mm b/atom/browser/native_window_mac.mm
index 88476eafbf54..133a0e6becc5 100644
--- a/atom/browser/native_window_mac.mm
+++ b/atom/browser/native_window_mac.mm
@@ -494,7 +494,7 @@ NativeWindowMac::NativeWindowMac(
   event_monitor_.reset([[NSEvent
     addLocalMonitorForEventsMatchingMask:NSScrollWheelMask
     handler:^NSEvent * _Nullable(NSEvent * event) {
-      if (![window_ isKeyWindow])
+      if ([[event window] windowNumber] != [window_ windowNumber])
         return event;
 
       if (!web_contents)