Re: changing the content of a model/view/store at run time

if you think you have to use c api, you're almost certainlt doing it wrong.
why? does the c++ wrapper not provide remove() ?

On Sat, 10 Aug 2019, 16:28 pcr, <[email protected]> wrote:

> I have changed from a tree store to a list store now, and I have working
> code, except for the last line in this call back used when a radio button
> is clicked in order to erase the list store and replace it with another at
> run time:
>
>   void ExampleWindow::on_rb2_clicked()
>  {
>     std::cout << "rb2 clicked" << std::endl;
>
>     typedef Gtk::TreeModel::Children type_children;
>     type_children children = liststore1->children();
>     type_children::iterator iter;
>     for(iter=children.begin(); iter!=children.end(); ++iter)
>                gtk_list_store_remove (*liststore1,*iter);
>
> }
>
> The compiler message I get is
>
> test3.cc: In member function ‘void ExampleWindow::on_rb2_clicked()’:
> test3.cc:104:27: error: no match for ‘operator*’ (operand type is
> ‘Glib::RefPtr<Gtk::ListStore>’)
>     gtk_list_store_remove (*liststore1,*iter);
>
> So my question is, I suppose, what is the proper syntax for using
> gtk_list_store_remove ???
> On 8/8/19 3:46 PM, pcr wrote:
>
> I'm trying to learn how to iterate over model rows in a manner similar to
> the code segment in section 9.3 of the gnome gtkmm tutorial.  Consider me a
> newbie; the "something" I want to do below is delete/clear/erase a row -
> really all rows so I can display a new set of rows in response to a user
> action like changing a radio button.  But I haven't been able to do it.
> Here is the snippit from section 9.3:
>
> typedef Gtk::TreeModel::Children type_children; //minimise code length.
> type_children children = refModel->children();
> for(type_children::iterator iter = children.begin();
>     iter != children.end(); ++iter)
> {
>   Gtk::TreeModel::Row row = *iter;
>   //Do something with the row - see above for set/get.
> }
> *I'm also confused by the following comment I found on line; I don't see how this can work with the above code either. *
> iterator Gtk::TreeStore:erase(const iterator& iter)
> 	Returns an iterator to the next row or end() if there is none"
>
> I hope you can help me .  Thanks, PCR
>
>
>
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