[K12OSN] Teacher Tool

Robert Arkiletian robark at gmail.com
Fri Mar 9 20:03:11 UTC 2007

On 3/9/07, Peter Scheie <peter at scheie.homedns.org> wrote:
> Robert Arkiletian wrote:
> > On 3/8/07, Kemp, Levi <lnkemp at bolivar.k12.mo.us> wrote:
> >> Is there a way in teacher tool to monitor the screens of all the
> >> students, even if it is a smaller size? If not does anyone know how I
> >
> > This seems to be a popular request but the only way I currently know
> > how to do this is to simply set the -geometry option in the vncviewer
> > call. I also could probably get the vnc windows to arrange themselves
> > on screen not to overlap. But if the student desktop is 1024x768 and
> > each view window (on the teacher screen) is 320x200 (or something)
> > then you don't see the entire student desktop only a section (not
> > useful). Does anyone know of a way to scale a vnc session to create a
> > thumbnail?
> >
> There's a package on freshmeat called VNC Snapshot that is a commandline utility that
> takes a jpeg snapshot of a VNC server (the client machine in our case).  Perhaps with
> that you could scale the jpegs down to thumbnail size and create a 'board' with
> snapshots of the clients.  It's not real-time, but I think that's probably better, as a
> bunch of real-time thumpnails would tax the network.  VNC Snapshot is at
> http://vncsnapshot.sourceforge.net/

This is the best idea I have seen. Thanks Petre. You are right, real
time thumbs would probably be too much for the network. I will see if
I can integrate vnc snapshot. Might not happen till this summer as I
am bogged down with report cards and teaching.

> Petre
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Robert Arkiletian
Eric Hamber Secondary, Vancouver, Canada
Fl_TeacherTool http://www3.telus.net/public/robark/Fl_TeacherTool/
C++ GUI tutorial http://www3.telus.net/public/robark/

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