Re: [gtkmm] How do you determine iterator 'type' for get_children.begin() ?

[Sergio Pascual <spr astrax fis ucm es>]

Well, I think is something like this:

Gtk::Box_Helpers::BoxList& boxlist = buttonbox.children();

for(Gtk::Box_Helpers::BoxList::iterator 
i=boxlist.begin();i!=boxlist.end();i++){
Gtk::Button* button=dynamic_cast<Gtk::Button*>(i->get_widget());
}

Cheers, Sergio

On Wed, 11 Jun 2003, Jeff Gavin wrote:

> I'm trying to loop through each button in a button box and collect the 
> pointers to each of the button widgets.  So far I can do the following 
> because I know that there are 8 buttons in the button box.
> 
> button[0] = (Gtk::Button *) *(buttonbox->get_children().begin());
> button[1] = (Gtk::Button *) *(buttonbox->get_children().begin()++);
> button[7] = (Gtk::Button *) *(buttonbox->get_children().end());
> 
> The above code compiles and does what I want, it gives me the first, 
> second, and last button in my button box.
> 
> I cannot figure out what type 'i' should be in this example:
> 
> <WHAT TYPE GOES HERE?> i;
> for (i = buttonbox->get_children().begin();
>       i <= buttonbox->get_children().end();
>       i++)
> {
>    button[j] = *(i);
> }
> 
> How do you determine the type of the iterator.  I have tried to find an 
> example but cannot.  I have read and re-read the online documentation 
> for ListHandle and am very lost.
> 
> I even compiled the program with the type of 'int' and the compiler 
> complained:
> 
> cannot convert 
> `Glib::Container_Helpers::ListHandleIterator<Glib::Container_Helpers::TypeTraits<Gtk::Widget*> 
>  >' to `int' in assignment
> 
> I was hoping that the error message would give me a hint, but I'm still 
> not able to figure out the correct type to use for the iterator.I know 
> that an experienced C++ programmer would then know exactly what type to 
> use, but alas, I'm still new to C++.
> 
> Thanks for your help.
> 
> Jeff
> 
> _______________________________________________
> gtkmm-list mailing list
> gtkmm-list gnome org
> http://mail.gnome.org/mailman/listinfo/gtkmm-list
> 

-- 
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                 Sergio Pascual Ramírez       spr astrax fis ucm es
               Tf: (+34)  91-394-50-18      Fax: (+34)  91-394-46-35
                      Dept. Astrofísica Facultad de C.C. Físicas 
                          Universidad Complutense de Madrid
                                 28040 Madrid (Spain)
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