Listening to key events on the entire editor window

[TJHeuvel-net]

I’m trying to implement paste functionality by detecting wether the user pressed Ctrl-V in an editor window. I’m trying to following just after creating the UI:

        rootVisualElement.RegisterCallback<KeyDownEvent>(kd =>
        {
            Debug.Log($"{kd} cmd: {kd.commandKey}");

            if(kd.keyCode == KeyCode.V && kd.commandKey)
            {
                Debug.Log("PASETE");
            }

        }, TrickleDown.TrickleDown);

However the callback is not fired at all, and i’m not sure why. I tried the manual’s example that listens to MouseDownEvent, and it is only fired when i click inside an area with ui elements, and not in the area at the bottom. Why is that, when i listen to the root element i expect every click to be contained? Just like in Javascript when you listen to an event on the document body it contains everything.

[chris-z562]

Your root is likely shrinking to the size it needs for its children. Try this:

rootVisualElement.style.flexGrow = 1f;