概要

Shortcut Manager でキー割り当てが変更された時に

using UnityEditor;
using UnityEditor.ShortcutManagement;
using UnityEngine;

[InitializeOnLoad]
public static class Example
{
    static Example()
    {
        ShortcutManager.instance.shortcutBindingChanged += args =>
        {
            Debug.Log( args.shortcutId );
            Debug.Log( args.oldBinding );
            Debug.Log( args.newBinding );
        };
    }
}

ShortcutManager.instance.shortcutBindingChanged が呼び出されます