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

[cedric <cedric probesys com>]

Matthew Walton a écrit :

> 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!)
you re forgiven! ;-)

> 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.
it s no matter it s done backward or forward, the important thing is 
that it works, and it works!!! i ve just had to make some minor 
modifications, but nothing difficult! i ve almost get to the goal alone, 
but you brought me the missing step: thanks a lot!!!