Re: Forbid focusing of TreeView columns

Franck Pommereau wrote:
> > I believe this is impossible (or should be). Anything that can be
> > clicked should also be reachable via the keyboard, which means it must
> > be able to receive focus.
>
>
> A button can behave this way, just use:
>
>   button.set_property("can-focus", gtk.FALSE)
>
> and the button will not get the keyboard while staying clickable.
>
>
> > That said, I'm just guessing that this is a general gtk usability
> > principle -- I could be wrong
>
>
> I hope you're wrong, otherwise I'll find no solution to my problem.  :-/

The column header is just a button.  The trick is getting a pointer to 
it.  This can be done using this hack, where 'col' if the 
gtk.TreeViewColumn object:

    label = gtk.Label('_Foo')
    label.set_use_underline(True)
    col.set_widget(label)
    label.show()
    w = label
    while not isinstance(w, gtk.Button):
        w = w.get_parent()
    w.set_property("can-focus", False)

Note how I also add a mnemonic to the new label widget so that the 
column header is still accessible from the keyboard.

--
Tim Evans
Applied Research Associates NZ
http://www.aranz.com/
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