Only one unclosable window in full screen

[Simon Péter <simon peter gprsec hu>]

Hi List,

I would like to write a program which asks data from an Oracle database in an 
industrial enviorment, where users only available only one program what shows 
the needed informations in a formated window.
Is there any chance to run perl GTK2 window what is unclosable, unminimalized?

Regards,

Peter