From 7e439dcd58fa4c8fb3f8f3aa1b6ad30de06bbbd8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dariusz=20Komosi=C5=84ski?= <darek.komosinski@gmail.com>
Date: Sun, 24 Nov 2019 17:53:19 +0100
Subject: [PATCH] Merge pull request #3282 from
 MarchingCube/fix-window-close-memory-leak

Fix memory leak caused by styles staying applied after window close
---
 src/Avalonia.Controls/TopLevel.cs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/Avalonia.Controls/TopLevel.cs b/src/Avalonia.Controls/TopLevel.cs
index 293809bf51..a0df186eb7 100644
--- a/src/Avalonia.Controls/TopLevel.cs
+++ b/src/Avalonia.Controls/TopLevel.cs
@@ -269,6 +269,12 @@ namespace Avalonia.Controls
         /// </summary>
         protected virtual void HandleClosed()
         {
+            var logicalArgs = new LogicalTreeAttachmentEventArgs(this);
+            ((ILogical)this).NotifyDetachedFromLogicalTree(logicalArgs);
+
+            var visualArgs = new VisualTreeAttachmentEventArgs(this, this);
+            OnDetachedFromVisualTreeCore(visualArgs);
+
             (this as IInputRoot).MouseDevice?.TopLevelClosed(this);
             PlatformImpl = null;
             OnClosed(EventArgs.Empty);