Re: How to make a single cell editable in Gtk::TreeView?

[Murray Cumming <murrayc murrayc com>]

On Wed, 2012-03-07 at 09:00 +0100, Murray Cumming wrote:
> On Tue, 2012-03-06 at 22:28 +0100, Gerardo Ballabio wrote:
> > 2012/3/6, Kjell Ahlstedt <kjell ahlstedt bredband net>:
> > > I haven't tested this, but I think you shall call one of the
> > > Gtk::TreeView::set_cursor() methods with start_editing = true.
> > 
> > That worked after I specialized on_expose_event() and put the call
> > there. Putting it in the constructor didn't work, even after
> > show_all_children(): the row was selected, but the cell wasn't open
> > for editing. I suppose between the constructor and the expose
> > something happens that turns off editing mode.
> 
> Maybe you were doing this in some other TreeView signal handler. I've
> had similar problems, which I've solved by using a signal_idle handler.
> connect_once() makes this fairly easy:
> http://developer.gnome.org/glibmm/unstable/classGlib_1_1SignalTimeout.html#a4ea8fdd120102d7963709916f28b2bcc

Sorry, this is the correct link:
http://developer.gnome.org/glibmm/unstable/classGlib_1_1SignalIdle.html#a94217dc63e35f96b5cee4c48f2cdd020

> I think it makes more sense to use this than an expose handler. I think
> it's a common technique.
> 
> > I've reattached your example with my modifications (marked by //!!!).
> > Note that I had to make a couple of other changes (change Box to VBox
> > and ButtonBox to HButtonBox) because I'm using gtkmm 2.4 (what is
> > available on Debian stable).
> 
> 

-- 
Murray Cumming
murrayc murrayc com
www.murrayc.com
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