Find bottom of Gtk Grid

[Jim Heald <jhdoubleoseven gmail com>]

Hello,

I noticed that before tables were deprecated you used to be able to find their size, but it says in the documentation that a Gtk grid does not expose its size. Therefore, I am trying to implement a function to react to items being attached to the grid -- specifically get the widget's 'top-attach' property, see if it is larger than the previous widget's, and if it is store that as the new value to compare too.

My question is, is there any signal that gets emitted when a widget gets attached to a grid? I know a container has an `add` signal, but that is not run when something is attached. What would be the best way to keep track of how many rows there are in my grid?

Thanks!

Jim