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Fixes #9042
Main PR
Description
WPF applications with D3DImage can crash when a monitor is off or unavailable and IDirect3D9.GetAdapterMonitor returns NULL.
For example on laptops with connected HDMI external display and display setting “Extend”
and control panel “when I close the lid” = “Do nothing”, when closing the lid or on sleep / awake.
Customer Impact
WPF applications crash.
Regression
This bug exists in existing .NET releases like 4.8.
Testing
Take a laptop with connected HDMI external display and set display setting “Extend”
and control panel “when I close the lid” = “Do nothing”, then close the lid and check if a WPF application with D3DImage crashes.
Risk
Unclear.
Microsoft Reviewers: Open in CodeFlow