front end - How to Detect Special Key Presses in a Notebook?

We can use:

SetOptions[EvaluationNotebook[], NotebookEventActions -> {{"KeyDown","s"} :> Print["triggered"]}]

to make the current notebook respond to s button press, also we can do the same to Modifier Keys like Ctrl, Shift, Alt or so.

Can we do the same with Backspace, Delete or F1~F12?

Additionally, can we detect the mouse-wheel's scrolling state?

Answer

Following detects backspace on Mac:

SetOptions[EvaluationNotebook[],NotebookEventActions->

     {{"KeyDown","\.08"}:>Print["triggered"]}]

This code can be helpful for finding out different codes for non-standard keys.

SetOptions[EvaluationNotebook[],NotebookEventActions->
     {"KeyDown":>Print[FullForm@CurrentValue["EventKey"]]}]