[Gtk-sharp-list] TreeView : Determining Iter/Path Visibility

[Archie Maskill]

Hi everyone -

I'm writing an application that has a TreeView.  The rows display data
that is constantly being streamed in over the network, and there are a
LOT of rows.  To improve the efficiency of this, I'd like the
application to tell the server which data it's interested in based on
which rows within the TreeView can be seen by the user.

Is there any kind of feature that TreeViews have that lets you know
which rows (or cells) have just been hidden/revealed due to the user
scrolling or resizing the window?

Many thanks,
Archie