[glade--]Re: [gtkmm] Problem with gtkmm handling comboboxes from glade

[Daniel Elstner <daniel elstner gmx net>]

Am Fre, 2001-11-30 um 18.25 schrieb John Bartelt:
> On Friday 30 November 2001 07:51 am, you wrote:
> > Ahh, now I remember that one.
> > Try if it works after removing the parentheses around items[].
> 
> No, it doesn't help. I don't think it has to do with scope, but with 
> constness.
> 
> I had a reply from vadim vk crocodile org saying that he had the same problem 
> and fixed it by running a perl script on the generated code to change " const 
> char * const " to " const char * ". I've confirmed that this works.
> 
> Now the question: which should be fixed, glademm or gtkmm?

Certainly gtkmm.  I'll look at it.

I think we can make this change without breaking the ABI since SArray
seems to be all inline anyway.  Murray?

Cheers,
--Daniel

> Thanks,
> John
> 
> >
> > > The prototype for set_popdown_strings is
> > >
> > > void Combo::set_popdown_strings(const SArray& strings)
> > >
> > > The compiler complains because there's no conversion available for const
> > > char *[] to const SArray&. See attached file captured from gmake output.
> > >
> > > It seems to me that there are three options:
> > >
> > > 1) I can edit the generated code as follows
> > > {
> > > 	vector<string> vec_items;
> > > 	int i = 0;
> > > 	while ( items[ i ] )
> > > 	{
> > > 		vec_items.push_back( items[ i++ ];
> > > 	}
> > > 	combo1->set_pop_down_strings( vec_items );
> > > }
> > >
> > > This works because SAarray handles most containers. However, I have many
> > > comboboxes in several popup dialogs in my application, and I don't like
> > > having to find and manually edit each one. Besides, the code is in
> > > *_glade.cc files that you're not supposed to edit - they get overwritten
> > > each time glade rebuilds source after a design change.
> > >
> > > 2) Persuade the authors of glade(glademm) to generate the appropriate
> > > SArray compatible container, or
> > >
> > > 3) Fix gtkmm to handle the conversion automatically.
> > >
> > > I'd appreciate any other comments, help, or discussion.
> > >
> > > Thanks, John.
> > >
> > > --
> > > John Bartelt
> > > bartelt ics uci edu
> > > ----
> > >
> > >
> > > /usr/include/gtk--/base.h: In function `size_t
> > > Gtk::SArray_Helpers::Traits<T>::get_size (const T &) [with T = const
> > > char *const[2]]':
> > > window1_glade.cc:704:   instantiated from here
> > > /usr/include/gtk--/base.h:646: request for member `size' in `t', which
> > > is of non-aggregate type `const char *[2]'
> > > /usr/include/gtk--/base.h: In function `const char *const
> > > *Gtk::SArray_Helpers::Traits<T>::get_data (const T &) [with T = const
> > > char *const[2]]':
> > > window1_glade.cc:704:   instantiated from here
> > > /usr/include/gtk--/base.h:645: request for member `begin' in `t', which
> > > is of non-aggregate type `const char *[2]'
> > > /usr/include/gtk--/base.h:645: request for member `size' in `t', which
> > > is of non-aggregate type `const char *[2]'
> > > gmake: *** [window1_glade.o] Error 1
> >
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> 
> -- 
> John Bartelt
> bartelt ics uci edu
> 
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