>I am working on an application that uses a top level form a the main form. I thought I could issue an on shutdown to control how the application closes. However the command doesnt seem to work. Is there anyway I control how the application closes when a user clicks on the close box in a top level form.
>
>Many thanks in advance for any help on this topic

Put in QueryUnload Event of the form:

LOCAL cOnShut
cOnShut = ON("SHUTDOWN")

IF .NOT. &cOnShut && The Function/Procedure you use for ON SHUTDOWN must returns .t. or .f. to check if all is OK during SHUTDOWN
   NODEFAULT
   RETURN .f.
ENDIF

(not tested)