catch key press events

[Sven Rech <svenrech gmx de>]

Hi,

I'm searching for a possibility to catch all key pressing events from
the whole display (not only the events that are for my own application).

I need to do the following: When the user presses Alt+i for example, my
application should popup a window at the mouse position.

-- 
Sven Rech <svenrech gmx de>