From 32239781e2c933152282ae913ff9706515fb4f0f Mon Sep 17 00:00:00 2001
From: Ben <bennybuerger@web.de>
Date: Wed, 18 Oct 2023 16:46:09 +0200
Subject: [PATCH] Additional Null-Check in TransformToDeviceDPI

---
 source/Components/AvalonDock/Controls/TransformExtentions.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/Components/AvalonDock/Controls/TransformExtentions.cs b/source/Components/AvalonDock/Controls/TransformExtentions.cs
index 768601ce..5e4679f1 100644
--- a/source/Components/AvalonDock/Controls/TransformExtentions.cs
+++ b/source/Components/AvalonDock/Controls/TransformExtentions.cs
@@ -59,7 +59,7 @@ public static Rect GetScreenArea(this FrameworkElement element)
 
 		public static Point TransformToDeviceDPI(this Visual visual, Point pt)
 		{
-			var compositionTarget = PresentationSource.FromVisual(visual).CompositionTarget;
+			var compositionTarget = PresentationSource.FromVisual(visual)?.CompositionTarget ?? null;
 			if (compositionTarget == null)
 				return default;
 			Matrix m = compositionTarget.TransformToDevice;