Accessing AppWindow property on Window is expensive

[stevenbrix]

Describe the bug

The Window class doesn't cache the AppWindow object, so this is showing up in our app traces

for an app that needs to access the actual HWND it is necessary to get the AppWindow object so that you can go from WindowID -> HWND

Steps to reproduce the bug

1. write an app
2. access AppWindow on the window

Expected behavior

i would expect this to be a simple property access and just add ref the pointer it has

Screenshots

NuGet package version

WinUI 3 - Windows App SDK 1.4.4: 1.4.231219000

Windows version

Windows 11 (22H2): Build 22621

Additional context

No response

[github-actions]

Hi I'm an AI powered bot that finds similar issues based off the issue title.

Please view the issues below to see if they solve your problem, and if the issue describes your problem please consider closing this one. Thank you!

Open similar issues:

• How to use AppWindow in .NET Framework (#9230), similarity score: 0.71

Closed similar issues:

• Question: How to get AppWindow in 1.0.0-experimental (#6758), similarity score: 0.73
• How to use AppWindow in .NET Framework (#9113), similarity score: 0.71

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[DarranRowe]

Out of curiosity, how does this compare to using IWindowNative to get the handle? This would be WinRT.Interop.WindowNative for C#.