Re: Gtkada: attach signals to menus

[Stephen Leake <stephen_leake@stephe-leake.org>]

On Sunday, June 19, 2016 at 1:33:36 PM UTC-5, Dmitry A. Kazakov wrote:
> On 2016-06-19 17:02, Stephen Leake wrote:
> > Basic menus work, but I can't figure out how to compute the submenu on the fly.
> >
> > Here's my attempt:
> 
> [...]
> 
> > If I use "On_Activate" for On_Menu_Table, the submenu is not shown. So I tried "On_Select"; still no submenu, and it crashes with
> 
> This is because you do not "show" submenu you create.

Arg. I keep expecting things to be shown by default.

> Here I changed your signal handler:

Right, but I want different results depending on some state. I ended up creating all the possible menu items in gtk_new, and using show/hide in On_Menu_Table:

   procedure On_Menu_Table (Self : access Gtk.Menu_Item.Gtk_Menu_Item_Record'Class)
   is
      pragma Unreferenced (Self);
   begin
      case State is
      when True =>
         Table_Menu_Add.Show;
         Table_Menu_Edit.Show;
         Table_Menu_Delete.Hide;

      when False =>
         Table_Menu_Add.Hide;
         Table_Menu_Edit.Hide;
         Table_Menu_Delete.Show;
      end case;

      State := not State;
   end On_Menu_Table;

That works nicely.

Thanks!