I want to get key name which user types, "a", "s", "d", "enter", "space" and others...
I think, on_modified event is suitable for this, but its event gets view object,
and view object hasn't methods for getting key name pressed.
Then, I have tried another idea.
I bound all keys to commands which are defined newly.
However, after I have tried that, when I entered the key, the key was not inputted.
What would be the best thing to do?