A better way to use IInitializeWithWindow

[mveril]

Using IInitializeWithWindow is very complicated with CsWinRT compared to the old .NET way. You can see the implementation in the WinUI-3-Demos repo. It's possible to restore the old way or create a wrapper for that integrated in CsWinRT ?
Another isuue which talk about that #287

[Scottj1s]

CsWinRT now supports ComImport-attributed interfaces directly. These can be defined by end developers, or included in projection assemblies, where appropriate. See also:
microsoft/microsoft-ui-xaml#2595