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

[pcr <pcr pcrt us>]

A grand "Thank you" to Daniel Boles and Phil Wolff for their help.  I 
had been mixing up gtk and gtkmm documentation!  I am attaching the 
complete now working code for anyone interested.

On 8/10/19 10:04 AM, Phil Wolff via gtkmm-list wrote:
> As indicated by the error message, liststore1 is a RefPtr to a 
> ListStore model, which is a C++ entity that
>
>     1) cannot be used as an argument to a gtk+ function, and
>
>     2) cannot be dereferenced with the * operator.
>
> At a more fundamental level, this approach is unnecessarily 
> complicated. The entire contents of the function can be replace with a 
> single statement:
>
>     liststore1->clear ();
>
>
> On 8/10/19 8:20 AM, pcr 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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> >
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