Hi Denis.

>In my application, users are allowed to modify the structure of some files. A loop checks if essential fields have been tampered with and forces the fields back in place. But if they screw up and decide to Cancel the FoxPro Modi Struc form, can I trap that after the modi struc command in my code?

This may not be immediately useful to you, but in VFP 7, you can create a database event (assuming these are tables in a database rather than free tables) called DBC_AfterModifyTable. This event receives an lChanged parameter that, if .F., means the user either cancelled or chose OK but didn't actually make any changes.

Doug