>hi to all experts
>I want to knowe how to pass message inside my system.
>in my system i have one programme this programme through i maintain my .DBF Table that time i want to inform all user who's currently working inside my system. so before file maintance start i want to pass one message to all user
>"Pls. LOgOut to System"
>
>thanks in advance
>
>regards
> Mazahir

I had this same problem. I solved it as follows:

1) Postpone most maintenance until midnight.

This wasn't enough; for instance, if index corruption is detected, the files need to be fixed immediately.

2) Create a global Timer that checks for the existence of a certain file ("maintenance.tmp"). If the file exists, the program will immediately execute the OnQuit() method of the application object - that is, react as if the user pressed Alt-F4. This doesn't guarantee that the program will quit immediately; if there are pending changes, the user will be asked to save them. If the user went to lunch, this logout procedure doesn't work. However, this doesn't seem to be a problem in actual practice.

HTH, Hilmar.