How to make a window "undeletable"

[Maulet <llistes_lfs yahoo es>]

Hello.

I want to display an information modal dialog while running a critical 
process in the background, and so I want to prevent the user from 
destroying the dialog.
Currently I connect the "delete-event" to a signal handler that does 
nothing. But I guess there must be a more elegant way to get the same 
effect.
Could anyone tell me how to best do it?

Tanks  ...no, thanks!


*
Maulet