Message box timer

[codfight]

I have a document that I have set up to automatically save and close if not used for 10 minutes. I want to have a message box appear to ask the user if they are finished with the workbook before it just closes, but after 30 seconds if there is no reply, have the workbook close automatically. When ever the msgbox appears, the code stops running until the msgbox is answered, so it never times out. I have tried using a pop-up form as well and no luck. Any ideas?

 

[VoG]

There's an example here http://www.xcelfiles.com/API_02.html

 

[codfight]

Thanks VoG! Was able to get it working!