There are two ways to interpret your question: 1) who
will get the focus if I get the LostFocus, and 2) who now
has focus now that LostFocus has fired. In the latter case GotFocus will fire for the object with the focus. I am not sure if the former is reasonable as there is no way to predict how focus would be lost (leaving the left or right of an object could cause different objects to get the focus).
HTH, --traveler