title: Difference between WH_KEYBOARD and WH_KEYBOARD_LL?
body: <p>What is the difference between the working of two? For <code>WH_KEYBOARD_LL</code>, <a href="http://msdn.microsoft.com/en-us/library/windows/desktop/ms644990(v=vs.85).aspx" rel="nofollow noreferrer">I read</a> that it  Installs a hook procedure that monitors <em>low-level</em> keyboard input events. What is meant by <em>low-level</em> keyboard events?</p>