Make sure to account for a null AppWindow #17746
Merged
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Description of Change
When opening a new WinUI window. If the user parents that to the current window
UI.Xaml.Window.AppWindow
will be null so we need to account for this.I've also added
Window.AppWindow
to our set of banned APIs since it doesn't have null safety. OurGetAppWindow
API does so that should keep us in a safer place to not regress this issue.Issues Fixed
Fixes #17490