void ShowSelector(string fieldName, KeyCode key, KeySelector.CallbackKeyCode callback)
{
GUILayout.BeginHorizontal();
GUILayout.Label(fieldName, GUILayout.Width(117f));
if (GUILayout.Button(key.ToString(), "MiniPullDown"))
{
KeySelector.Show(fieldName, key, m.keysInUse, callback);
}
GUILayout.EndHorizontal();
}