On 12/22/2017 11:29 AM, Pascal via Gnoga-list wrote:
>
> After declaration of my view:
> type Default_View_Type is new Gnoga.Gui.View.Grid.Grid_View_Type with
> record
> Label_Text : Gnoga.Gui.View.View_Type;
> Click_Button : Gnoga.Gui.Element.Common.Button_Type;
> end record;
>
> and creation of my objects:
> Gnoga.Gui.View.Grid.Grid_View_Type (Grid).Create (Parent, Layout,
> Fill_Parent, Set_Sizes, ID);
> Grid.Label_Text.Create (Grid.Panel (1, 1).all);
> Grid.Click_Button.Create (Grid.Panel (1, 2).all, "Click Me");
>
> My button controller is:
> procedure On_Click (Object : in out Gnoga.Gui.Base.Base_Type'Class) is
> -- View : Logo.View.Default_View_Access :=
> -- Logo.View.Default_View_Access (Object.Parent);
> begin
> -- View.Label_Text.Put_Line ("Click");
> gnoga.log(ada.Tags.Expanded_Name(Object.Parent'tag));
> end On_Click;
>
> I've got a CE:
> raised CONSTRAINT_ERROR : logo-controller.adb:14 tag check failed
>
> because of object parent's type:
> GNOGA.GUI.VIEW.VIEW_BASE_TYPE
>
> How to get the true parent that is Default_View_Type and then access to
> Label_Text?
There's an old joke that goes: A man went to the doctor and flexed his arm at
the elbow, saying, "Doctor, it hurts when I do this."
To which the doctor replied, "Then don't do that!"
There's a new non-joke that starts: A programmer went to the S/W engineer and
said, "It hurts when I use type extension."
Grid : Gnoga.Gui.View.Grid.Grid_View_Type;
Label_Text : Gnoga.Gui.View.View_Type;
Click_Button : Gnoga.Gui.Element.Common.Button_Type;
procedure On_Click (Object : in out Gnoga.Gui.Base.Base_Type'Class) is
begin
Label_Text.Put_Line ("Click");
end On_Click;
Grid.Create (Parent, Layout, Fill_Parent, Set_Sizes, ID);
Label_Text.Create (Grid.Panel (1, 1).all);
Click_Button.Create (Grid.Panel (1, 2).all, "Click Me");
Click_Button.On_Click_Handler (Handler => On_Click'access);
Simple, clear, and doesn't hurt.
--
Jeff Carter
"Sons of a silly person."
Monty Python & the Holy Grail
02
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