SoNodeSensor and SoTranSender/SoTranReceiver

[Haykel ben Jemia <haykel@xxxxxxxxxxxxxxx>]

Hi,
I want to write an Application that monitors changes in a scenegraph
and send them over the network. I found that I can use SoNodeSensor
and SoTranSender/SoTranReceiver, but I have the following problems:

1. How can I get a pointer to a node that is added/removed from a
scenegraph? (I just get a pointer to the root of the scenegraph)

2. I noticed that SoTranSender sends the memory addresses of the nodes
to identify them, does it mean that I have to send the hole scenegraph
before I can start sending the changes or can I also make the
communicating programs load the same scenegraph from a file?

3. When exactly should I use prepareToSend()?

4. Is there a better way to do waht I want to do:) ?

Bye,
Haykel
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