Scrolling inside a box / multiple widgets

[dAgeCKo <dagecko free fr>]

Hello,

I am a bit annoyed when trying to scroll two TextView at once.

First of all, let me explain a bit what I am doing. I want to do a code 
editor without the use of SourceView (I know this is bad).
To present the code, I want to use 2 TextView, one which will display 
and edit the code and the other one which will display the line numbers 
(along with other information).
Each time a new line happens I scroll at the cursor position. 
Unfortunately I can't achieve what I'd like.

Now, about what I'm doing:

case 1: I put my 2 TextView inside a box which is inside a single 
ScrollWindow. With this method, the scroll window effectively works (the 
bar gets smaller and smaller) but it never follow the cursor.

case 2: I put my TextView each inside a ScrollWindow, each inside a case 
of the box. With this method, I could effectively make the code TextView 
to scroll and focus on the cursor, but the line counter TextView also 
displays a scroll bar, which I'd like not to display.

If I set the ScrollWindow properies of the line counter TextView so that 
it never displays the scroll bars, then my window resizes.

What I would like to know is what an experienced Gtk+ user would do to 
do the trick: scroll the code TextView at the cursor position and scroll 
the line counter TextView at exactly the same position ?

And what if I would like to add other widgets (tree views and so on) ?

Is it possible to calculate the scroll values in a good way if I would 
like to use a single ScrollWindow in which I put a Box ?

Thanks in advance.