What APIs does Visual Studio use to determine the XAML tree of any arbitrary process?

[amtopel]

In Visual Studio, you can attach to any process, and it will show the XAML visual tree in the debugger. For example, if you attach to File Explorer, it will show the XAML Islands and all of their elements. Does anyone know what classes and methods it uses to do this? I"m aware of the VisualTreeHelper class, but how does it get started in an arbitrary process? Does it start with a HWND or AppWindow? Buf it so, where does it go from there? Thanks for any info.

[lgztx96]

You might be interested in these things:
https://learn.microsoft.com/en-us/windows/win32/api/_xaml_diagnostics/

https://github.com/m417z/UWPSpy

[amtopel]

Thank you very much. I'm not sure how I overlooked those in my searches. I really appreciate it.