Re: DND in TreeView

[Jonathon Jongsma <jonathon quotidian org>]

Deng Xiyue wrote:
> Deng Xiyue <manphiz gmail com> writes:
>
> > Hi gtkmm maintainers:
> >
> > I'm having some problem on handling DND in a TreeView.  I tried to
> > handle DND with signals in Gtk::TreeModel:
> > Gtk::TreeModel::signal_row_deleted() and
> > Gtk::TreeModel::signal_row_inserted().  In most cases they work well,
> > except on the last row: when dragging the last row away,
> > signal_row_deleted() is never emitted; when dragging a row to the place
> > after the current last row, signal_row_inserted() gives the Path of row
> > 0.  The test is done in gtkmm 2.14.3.
> >
> > I wonder whether it is a bug in GTK+/gtkmm or I'm using the wrong
> > signals for in TreeView DND handling.  I'm aware of the DND example in
> > gtkmm tutorial, but seems to describe a general way to handle an widget
> > as a source/destination to coordinate with another widget, instead of a
> > DND within TreeView rows, or at least not an optimum way for that.
> > Correct me if I'm wrong.
> >
> > Regards,
> > Deng Xiyue
> >
> > (PS: I'm using gmane to access various mailing lists so it should be
> > safe to not CC me, but I wouldn't mind if you do so by mailing list
> > policy.)
>
> Hi there, any news on this?  Any pointer to docs is appreciated, even
> GTK+ ones.
>
> Thanks in advance.

Hi Deng,
I don't actually have any experience with DND in a treeview so I don't have a lot of 
advice to give.  You might try to create a minimal example in C/Gtk+ just to verify 
whether the behavior is the same in gtk+ and gtkmm

--
jonner