From 153e2060c0dd4f40298285e2ccffa12de809d7e5 Mon Sep 17 00:00:00 2001
From: Peter Suter <petsuter@users.noreply.github.com>
Date: Tue, 4 Feb 2025 10:20:29 +0100
Subject: [PATCH] Avoid UCEERR_RENDERTHREADFAILURE

Fix https://github.com/dotnet/wpf/issues/9042
---
 .../src/WpfGfx/core/hw/InteropDeviceBitmap.cpp                | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Microsoft.DotNet.Wpf/src/WpfGfx/core/hw/InteropDeviceBitmap.cpp b/src/Microsoft.DotNet.Wpf/src/WpfGfx/core/hw/InteropDeviceBitmap.cpp
index 64199522668..b0bfcb314fd 100644
--- a/src/Microsoft.DotNet.Wpf/src/WpfGfx/core/hw/InteropDeviceBitmap.cpp
+++ b/src/Microsoft.DotNet.Wpf/src/WpfGfx/core/hw/InteropDeviceBitmap.cpp
@@ -845,6 +845,10 @@ CInteropDeviceBitmap::GetDisplayFromUserDevice(
     IFC(pID3DUserDevice->GetDirect3D(&pID3DUserObject));
 
     HMONITOR hMon = pID3DUserObject->GetAdapterMonitor(m_uAdapter);
+    if(hMon == NULL)
+    {
+        hMon = ::MonitorFromWindow(NULL, MONITOR_DEFAULTTOPRIMARY);
+    }
 
     g_DisplayManager.GetCurrentDisplaySet(&pDisplaySet);
     UINT uDisplayIndex;