[gtkada] Cell_Renderer_Combo: how to act on characters typed to show match in combo

[Rob Groen]

Hoi Manuel, 

Thanks for your answer. The thing is, I don't have a GtkCombo, instead
it is a GtkCellRendererCombo. On the latter I can't do a Get_Entry.
However, when googling on this topic, I found a hint: connect the
renderer to signal "edited-started", in the handler one of the params is
a GtkEditable. I suppose that is the entry I need to do what you
suggest. 

Regards, Rob 

On 2018-04-26 11:52, Op de Coul, Manuel wrote:

> Hoi Rob,
> 
> with Gtk.Entry_Completion; use Gtk.Entry_Completion;
> 
> Result : Gtk_Entry;
> List   : Gtk_List_Store;
> Compl  : Gtk_Entry_Completion;
> Iter   : Gtk.Tree_Model.Gtk_Tree_Iter;
> 
> Gtk_New (List, GType_Array'(GType_String, GType_String)); --example with two columns
> -- fill this list with your items for example:
> 
> Append (List, Iter);
> Set (List, Iter, 0, "item 1");
> 
> --create your combo box and renderer(s)
> 
> --create the entry completion
> 
> Result := Get_Entry (The_Combo);
> 
> Gtk_New (Compl);
> Set_Model (Compl, Gtk.Tree_Model.Gtk_Tree_Model(List));
> Set_Text_Column (Compl, 0);
> Set_Text_Column (Compl, 1);
> Set_Property (Compl, Text_Column_Property, 0);
> Set_Inline_Completion (Compl, True);
> Set_Popup_Single_Match (Compl, False);
> Set_Completion (Result, Compl);
> Unref (List);
> Unref (Compl);
> Combo_Box_Callback.Connect (The_Combo, "changed",
> Combo_Box_Callback.To_Marshaller (On_The_Combo_Changed'Access));
> --end
> 
> Greetings,
> Manuel
> 
> -----Original Message-----
> From: gtkada-bounces at lists.adacore.com [mailto:gtkada-bounces at lists.adacore.com] On Behalf Of Rob Groen
> Sent: woensdag 25 april 2018 9:20
> To: gtkada at lists.adacore.com
> Subject: [gtkada] Cell_Renderer_Combo: how to act on characters typed to show match in combo
> 
> Hello,
> 
> With a Cell_Renderer_Combo in a Tree_View I would like to act on typed characters and show the nearest match in the Combo. The Cell_Renderer_Combo has the property Has_Entry_Property set to True.
> However, I don't see an appropriate signal to react on, nor any way to get to the entry and associated buffer; that is needed to show the non-typed part of the match as being selected.
> 
> How can I do this with Gtkada?
> 
> Regards
> Rob Groen
> 
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