1. Multicast X windows under Linux
I am looking for information on how to broadcast
a single X window to many clients over a network.
I am trying to find out how to build an efficient
Linux based computer class with the ability for
pupils to ask for help interactively (trivial) and
for the teacher to display his active window to all
pupils at the same time (no information found so far).
Any pointers to information on how this could be done
would be very appreciated.
This is a hobby project and so far I have the following
- A query program allows a pupil to pop up a window on the
teacher's screen. The teacher can accept or reject
the query. If the query is accepted the pupil can show
a window selectable by the pupil to the teacher.
(Written in Tcl/tk)
- A very light weight chat client/server with different
filtering options and the ability to define chat groups.
It is for example possible to filter out messages belonging
only to me and the teacher, my own group or all chatters.
The idea has been to build a system requiring much less
resources than for example Netscape + a chat server based
on CGI scripts (client machines are 486 DX266).
(Written in c using Xforms for the GUI)
Planned further functionality:
- Broadcast a window to the whole class.
(Looking for necessary technical info)
- Language studio allowing broadcast of teachers example
speech data. Allowing the teacher to listen to any
pupil doing local training. Possibly training
pronounciation using for example waveform display.
(No research is yet done on this application)
Ideas etc. regarding any of the topics above are welcome.
The idea is to try to build a FREE Linux based classroom
package allowing an extended life to a few years old
computer classes where upgrading to Win98 + suitable
Office programs would be unnecessary expensive. The idea
is to use Linux in combination with Applixware or
Staroffice because a site licence is affordable even under a
tight budget. I hope to be able to put out some information
regarding the project above on my home page in the near
future including example programs.
Lars Silen (FINLAND)
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