From a5f12be3cf6f34434263e0db5bf590a959239db0 Mon Sep 17 00:00:00 2001
From: Sam Bent <sambent@microsoft.com>
Date: Thu, 19 Aug 2021 15:56:30 -0700
Subject: [PATCH] GetClickablePoint returns error value when the element is
 offscreen

---
 .../System/Windows/Automation/Peers/AutomationPeer.cs    | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/Microsoft.DotNet.Wpf/src/PresentationCore/System/Windows/Automation/Peers/AutomationPeer.cs b/src/Microsoft.DotNet.Wpf/src/PresentationCore/System/Windows/Automation/Peers/AutomationPeer.cs
index 2bc28b44fb5..fb7854bc8f8 100644
--- a/src/Microsoft.DotNet.Wpf/src/PresentationCore/System/Windows/Automation/Peers/AutomationPeer.cs
+++ b/src/Microsoft.DotNet.Wpf/src/PresentationCore/System/Windows/Automation/Peers/AutomationPeer.cs
@@ -1181,7 +1181,14 @@ public Point GetClickablePoint()
             try
             {
                 _publicCallInProgress = true;
-                result = GetClickablePointCore();
+                if (IsOffscreenCore())
+                {
+                    result = new Point(double.NaN, double.NaN);
+                }
+                else
+                {
+                    result = GetClickablePointCore();
+                }
             }
             finally
             {