[svlug] esoteric X question

[Jonathan Cobb]

Wondering if there is any way to change the display for an application
AFTER you've started it.

Here's an example:

I'm at my desktop computer.  I ssh into some remote box and set the
DISPLAY env variable to be my desktop's display.  I can then run X
applications on the remote machine and the display goes to my desktop
(and securely with X11 forwarding over ssh).  Very common/handy
technique.

Problem:  Let's say I leave my office with the X applications still up,
and later in the day I'm logged in to another machine somewhere else in
the building, far from my office.  I can ssh into the same remote box
and start other X apps there, but is it possible to see my applications
that are running on the remote box but displayed elsewhere (my
desktop)?  In other words, can you change the effective DISPLAY for an X
application AFTER it has started?

I haven't been able to find any info on this.  Any help appreciated.

  - jonathan.