How to set sensitive to false or hide checkbutton in TreeView?

[Dimitri Holz <d holz innoventis de>]

Hello all,

I have TreeView where one of column have checkbuttons
(CellRendererToggle) as elements and I have dinamically to set sensitive
to false (or to hide) certain of them. I have found a way to set
sensitive to false to all of checkbuttons in the same column but I don't
find a way to do it for individually checkbuttons.

Have anybody idea to do it?

Thanks in advance