GtkTreeView - How to detect a click in the header between 2 columns

[Benoit DUMONT <vertigo17 free fr>]

Hello,

I have another problem:
The function
gtk_tree_view_get_path_at_pos
is giving me TRUE even if I click between 2 columns in the header (so 
obviously not in a row).
It even returns that I clicked on the first row and first column (whish is 
wrong)
Could this be a bug or I made something wrong.

Benoit.