UWP screen capture & WPF new windows

[xamarin2023]

I'm porting a WinForms application to Xamarin that screen captures and opens windows.

I started off with UWP but ran into a barrier with screen capture. I don't see a way to capture all windows without user input via new GraphicsCapturePicker().PickSingleItemAsync().

I setup a WPF project but ran into a barrier with opening windows. I haven't found the WPF equivalent of var appWindow = await AppWindow.TryCreateAsync(); var appWindowFrame = new Windows.UI.Xaml.Controls.Frame(); appWindowFrame.Navigate(contentPage); ElementCompositionPreview.SetAppWindowContent(appWindow, appWindowFrame); await appWindow.TryShowAsync();.

Anyone have a solution for either?