Re: [gtkmm] i can delete toolbar ButtonElements...

[Matthew Walton <matthew alledora co uk>]

cedric wrote:
> ps: Matthew Walton, once (1 or 2 weeks ago ;-D ) you told me than there 
> were a better way to delete several lines of a ListStore than the way i 
> tried to use. i ve no other idea, so could you tell me how to do it in a 
> "clean" way? my purpose is not to recopy some code, but to learn! ;-) 
> thanks too!

Sorry, I forgot... lots of other things going on at the moment (as usual!)

I'm not sure that I'd actually describe it as cleaner, but what I'm 
doing in my media player app to delete the selected items is:

- get a vector of the selected items from the TreeView::Selection object 
(it will be a vector of TreeModel::Path objects)
- iterate through it backwards
- for each one, turn the path into an iterator and erase it

I'd point you at the code, but it's got a lot of signal triggering code 
and other such things around it, so here's a simplified version, 
assuming your TreeModel is accessed through a Glib::RefPtr called model:


std::vector<Gtk::TreeModel::Path> items = 
model->get_selection()->get_selected_items();

for(std::vector<Gtk::TreeModel::Path>::reverse_iterator riter = 
items.rbegin(); riter != items.rend(); riter++) {
  Gtk::TreeModel::iterator iter = model->get_iter(*riter);
  model->erase(iter);
}


So that may not be the best way, but it works for me :-) If you don't 
want to iterate backwards for whatever reason, your way is probably a 
lot better.