An alternative would be to add this in a new
gtkmm-documentation/examples/book/custom/custom_treemodel
directory in the gtkmm
tutorial. And a description in a new section in the Custom
Widgets chapter (which should then be renamed).
Isn't this kind of custom class that implements
one or more interfaces quite unusual? And a bit more complicated
than most of the demos? There is no corresponding program in
gtk/demos. All existing C++ demos in gtkmm correspond to C demos
in gtk.
Kjell
hello gtkmm,
so how do I continue with this? I feel that it would be really handy to add an example such as the one below to the gtkmm demos subdir.
I was struggling with this myself some years ago for a gtk2 program where the data were already established (and constantly changing) outside the gui in a separate structure.
Copying the data into the treeview model, as the existing demo programs do, is obviously not the ideal solution.
the other example in gtkmm-documentation keeps is very helpful, but it does not show subdirs...
regards, Danny.
On Mon, Dec 16, 2019 at 2:10 PM danny via gtkmm-list <gtkmm-list gnome org> wrote:
hi
well, actually, I did not find the example you are referring to. I probably did when I was working with the original gtk2 program, though.
so I have come up with this:(gtkmm-3.22.3/demos)
--------------------------------------------------------------/* Tree View/Tree Store** The GtkTreeStore is used to store data in tree form, to be* used later on by a GtkTreeView to display it. This demo builds* a simple list of nodes in memory and displays it in the GtkTreeStore.**/
...--------------------------------------------------------------
I'm not sure, though, if I really understand the purpose of
virtual bool Gtk::TreeModel::iter_parent_vfunc (
this function finds a parent for the given child, right? but why would that be needed, if a child can only be arrived at from a parent node in the first place?
regards, Danny.
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