CoreWindow.GetForCurrentThread() is return null in WinUI Desktop after Upgrade of WinUI 3 Preview 4

[Berkunath]

We have get the PointerCursor, PointerPosition and GetKeystates from the CoreWindow.GetForCurrentThread(). It works fine in WinUI 3 Preview 3. After upgrade of WinUI 3 Preview 4 CoreWindow.GetForCurrentThread() returns null

Expected behavior
CoreWindow.GetForCurrentThread() return proper value to get the PointerCursor, PointerPosition and GetKeyStates or suggest alternate solutions

NuGet package version:

[StephenLPeters]

This is expected as of preview 4. @anawishnoff do we have documentation for this?

[anawishnoff]

Yes, please see this doc that outlines some replacements and workarounds for this issue: WinRT API changes for Desktop apps

[DRAirey1]

This is the problem I'm having. anawishnoff, your link send us to a dead page. How about just posting the work-around so we don't have to waste any more time with these changes. It's hard enough as it is to upgrade.