Cursor gets in a field or leaves it

[Reinhold Venzl-Schubert]

Hi!

How I can ask a message when the cursor gets in a field or leaves it.

I want to write a script like:

if the cursor gets in field "abc" then
   answer "Hi!"
end if

or a script like this:

if the cursor leaves fld "xyz" then
   answer "Thank you!"
end if

Thank you too ;-)

Reinhold