[K12OSN] Screen Pop - Howto?

Julius Szelagiewicz julius at turtle.com
Tue Sep 1 19:21:24 UTC 2009

On Tue, 1 Sep 2009, C. Duncan Hudson wrote:

> My salespeople all run K12 ltsp, and they sit at the back of our shop.
> So consequently they may not be aware when someone comes into our
> showroom.  My security cameras automatically snap a picture of everyone
> who comes in the door, I'd like to take that image and 'Pop' it up on
> everyones' screen - so that they know a customer has walked in (and
> hopefully they get up and offer some assistance!)  Anyone know how I
> could script the opening of an image on my terminals?  Thanks in advance,

	there are several ways to "pop" a picture on the user's screen.
You can have an user app waiting for picture showing up in a preset place
- that can be run from .bash_profile. You can have a single app waiting
and displaying the pic on all terminals - for that you need a list of
current DISPLAY variables (I use the single app approach). It is
surprisingly easy. How does the picture appear on the system? How would an
app know about it?

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