[Question] Is there any way to compose an AppWindow with a Frame in desktop app?

[YesOhh]

WinUI3 1.0.0 Desktop c#

In UWP, I can use
ElementCompositionPreview.SetAppWindowContent(appWindow, new Page());
to set an AppWindow's content.
However, this function doesn't exist in the WinUI3.

How can I compose an AppWindow with a Frame?

[dotMorten]

Frames goes in Windows, now AppWindows.
I’d suggest you use the discussions section for questions, and keep generic WinUI questions in Microsoft’s repo or stack overflow, and keep focus here specific to WinUIEx