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References: <20051027162700.GA10076 at aquarium.takhisis.invalid> <20051027211507.GA11768 at aquarium.takhisis.invalid>
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From: Eric Stokes <eric.stokes at csun.edu>
Subject: Re: example of tree with cell_renderer_combo
Date: Thu, 27 Oct 2005 15:13:36 -0700
To: Stefano Zacchiroli <zack at bononia.it>

I think you may have everything correct, except that you forgot to  
set the `EDITABLE property to true, and the `TEXT_COLUMN property  
needs to be set to the column in your combo store which contains the  
enumerated values you want to appear in the popup list. As for the  
Gobject.Data.gobject_by_name bit, I used GTree.store_of_list (where  
the list contains the values I want in the popup list), which for all  
I know does the same thing you did here under the covers, but it  
looks prettier.

On Oct 27, 2005, at 2:15 PM, Stefano Zacchiroli wrote:

> On Thu, Oct 27, 2005 at 06:27:00PM +0200, Stefano Zacchiroli wrote:
>
>> Is that renderer supposed to work in lablgtk2?
>>
>
> Below there is a small example of what I'm trying (unsuccesfully so  
> far)
> to do. I see the two columns, but the one supposed to contain  
> combos is
> completely empty.
>
> Setting the `TEXT_COLUMN property of the combo_renderer to that
> generated by store_of_list does not help.
>
>   let win = GWindow.window ~show:true () in
>   let cols = new GTree.column_list in
>   let main_col = cols#add Gobject.Data.string in
>   let combo_col = cols#add (Gobject.Data.gobject_by_name  
> "GtkTreeModel") in
>   let main_renderer = GTree.cell_renderer_text [], ["text",  
> main_col] in
>   let combo_renderer = GTree.cell_renderer_combo [], ["model",  
> combo_col] in
>   let view_main_col = GTree.view_column ~renderer:main_renderer () in
>   let view_combo_col = GTree.view_column ~renderer:combo_renderer  
> () in
>
>   let list_store = GTree.list_store cols in
>   let model = (list_store :> GTree.model) in
>   let combo_store, _ = GTree.store_of_list Gobject.Data.string  
> ["a"; "b"; "c"] in
>
>   let view = GTree.view ~model ~packing:win#add ~show:true () in
>   let _ = view#append_column view_main_col in
>   let _ = view#append_column view_combo_col in
>
>   let append (list_store: GTree.list_store) s model =
>     let iter = list_store#append () in
>     list_store#set ~row:iter ~column:main_col s;
>     list_store#set ~row:iter ~column:combo_col model
>   in
>   let _ =
>     append list_store "foo" combo_store#as_model;
>     append list_store "bar" combo_store#as_model;
>     append list_store "baz" combo_store#as_model
>   in
>
>   GMain.Main.main ()
>
> The only oddity I noticed is that I need to use gobject_by_name in
> combo_col to avoid a runtime type error. This is strange since
> list_store is supposed to be a subtclass of gobject in the gtk/glib
> hierarchy.
>
> Any hint?
>
> -- 
> Stefano Zacchiroli -*- Computer Science PhD student @ Uny Bologna,  
> Italy
> zack@{cs.unibo.it,debian.org,bononia.it} -%- http://www.bononia.it/ 
> zack/
> If there's any real truth it's that the entire multidimensional  
> infinity
> of the Universe is almost certainly being run by a bunch of  
> maniacs. -!-
>
>