Global Keyboard Events and AddClassHandler

[LaurentInSeattle]

Hi all,

My app' is managing global keyboard events using AddClassHandler at the top level, like:

InputElement.KeyDownEvent.AddClassHandler<TopLevel>(OnKeyDown, handledEventsToo: true);
That's works.

Q1) Is there a better way to handle them, knowing they should be received even when non focused ?

Q2) It seems like there is no way to remove this hook when it becomes not needed any longer?
I could not find any suitable remove, unsubscribe, unregister... API.

Thanks!

[maxkatz6]

Q1) Is there a better way to handle them, knowing they should be received even when non focused ?

If you own the window, it would be better to handle this event on the window directly with Tunnel strategy.
window.AddHandler(InputElement.KeyDownEvent, OnKeyDown, Tunnel, handledEventsToo: true) (pseudocode).

This way, you can avoid static global event handlers, and still handle events first.

knowing they should be received even when non focused ?

This will work for unfocused controls, but focused window. You can't intercept input outside of your app this way. There is no API for that.

It seems like there is no way to remove this hook when it becomes not needed any longer?

It returns a disposable. You can dispose this subscription.

[LaurentInSeattle]

Thanks for the quick reply.
Your suggested alternate solution does the job, avoiding statics... Good.

The doc' page about AddClassHandler at https://reference.avaloniaui.net/api/Avalonia.Interactivity/RoutedEvent/C7C528DD only mentions: Returns: IDisposable with no description, comments, hints... nothing.