Thanks for the response.
I have been attempting to use IsKeyboardFocusWithinChanged for some time, but with limitted success. Recently I found that although I can reliably detect when the cursor has left a text box through use of the TAB key … the associated tag value has not been updated with the typed entry … so not very useful for my application. I have raised this in a forum item and asked for any suggestions.
Sequence of keyboard focus events and tag setting - Scripts, SQL, .NET Framework - Tatsoft