From f5020af86032daaad025ea4696c3d5463cc83f17 Mon Sep 17 00:00:00 2001
From: Dan Walmsley <dan@walms.co.uk>
Date: Wed, 25 Sep 2019 21:38:15 +0100
Subject: [PATCH] change window menus when windows are changed.

---
 native/Avalonia.Native/src/OSX/window.mm | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/native/Avalonia.Native/src/OSX/window.mm b/native/Avalonia.Native/src/OSX/window.mm
index 39c9ceec13..21e190695e 100644
--- a/native/Avalonia.Native/src/OSX/window.mm
+++ b/native/Avalonia.Native/src/OSX/window.mm
@@ -1192,6 +1192,15 @@ NSArray* AllLoopModes = [NSArray arrayWithObjects: NSDefaultRunLoopMode, NSEvent
 {
     if([self activateAppropriateChild: true])
     {
+        if(_menu == nullptr)
+        {
+            [NSApp setMenu: [NSMenu new]];
+        }
+        else
+        {
+            [NSApp setMenu:_menu];
+        }
+        
         _parent->BaseEvents->Activated();
         [super becomeKeyWindow];
     }