>What I'm going to do is to record the current field in the GotFocus event. This shouldn't be as bad as I first feared as, luckily, we subclassed all the objects and used the subclasses on the form, so I should only need to amend the GotFocus handlers in the subclasses. I'll have to do the grids manually and also change any existing GotFocus handlers to call the subclass ones.

Sounds good. Are you storing the object in the form? Are you using subclassed forms?