Is it possible to detect Keyboard focus events globally?

Question

The following events can be used, but, they must be attach for each element:

GotKeyboardFocus, LostKeyboardFocus

Is there a way in .NET WPF to globally detect if

Answer 1

You can hook to the tunneling preview events:

....

This way, as shown above, the window would be notified before all descendants when any of the descendants gets or loses the keyboard focus.

Read this for more information.