GTree.cell_renderer_toggle not activatable by user

Hi,

I've been trying to get a treeview with checkboxes that the user can
toggle but they don't "react" in the interface.
I'm currently using
  let renderer_toggle = GTree.cell_renderer_toggle [ `ACTIVATABLE true  ] in
but in vain.

I've made a pretty small reproducer (around 30 lines) which I've attached.

Compile with ocamlfind ocamlopt -linkpkg -package lablgtk2
cell_renderer_toggle_activatable.ml -o
cell_renderer_toggle_activatable

I'm not very confortable with treeviews so I may be doing something
pretty dumb but I really can't see what. Any help is appreciated.

Thanks. :-)

--

Adrien Nader

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