From a7a5e4a5d18682729e3136f2dd5f490dbc5e7554 Mon Sep 17 00:00:00 2001
From: Lucas Ontivero <lontivero@users.noreply.github.com>
Date: Fri, 9 Nov 2018 17:26:21 -0300
Subject: [PATCH] Fixes InvalidOperationException error

Checks the element is attached to the visual tree as part of the Hit test
---
 src/Avalonia.Input/InputExtensions.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Avalonia.Input/InputExtensions.cs b/src/Avalonia.Input/InputExtensions.cs
index a861bae528..f184e41998 100644
--- a/src/Avalonia.Input/InputExtensions.cs
+++ b/src/Avalonia.Input/InputExtensions.cs
@@ -45,7 +45,8 @@ namespace Avalonia.Input
             return element != null &&
                    element.IsVisible &&
                    element.IsHitTestVisible &&
-                   element.IsEnabledCore;
+                   element.IsEnabledCore &&
+                   element.IsAttachedToVisualTree;
         }
     }
 }