Re: system idle? / getting XEvents

[Havoc Pennington <hp redhat com>]

linas linas org (Linas Vepstas) writes:
> 1) is anyone working on any sort of thingy that will tell me if/how
> long the keyboard/mouse has been idle?  I want to add a feature
> to the gtt (gnome time tracker) that will turn it off after a period
> of inactivity.

I'd say copy xscreensaver... which you did:

> 2) To do the above, I started porting Jamie Zawinski's xscreensaver
> idle detection code to gdk, but got stumped. If the x server does not
> have the xidle extension (seems xfree86 doesn't), then it listens
> for XKeyboard/XPointer XEvents from *all* windows on the screen.  
> Problem: there seems to be no polite way of getting gdk to give me the 
> XEvent. (there is no analog of XtNextEvent).  I suppose I could just
> XCheckIfEvent now that I think about it, but it could be hairy, and
> I thought maybe one of the gdk developers could recommend a better way
> ...

Install an event filter (gdk_window_add_filter), pass NULL for the
window argument to get all windows.

Havoc