[gtkada] Addressing external data in a GUI

[Rick Duley]

Hi Preben

I did try Get_Toplevel as I explained further down the posting.  Yes, 
it returns
a widget.

What I am trying to do is get access to a user-defined data structure I have
included in the Gtk_Window_Record which defines the Toplevel window.  As I
showed, the widget I get from Get_Toplevel does _not_ allow me to do that.

Here's the MAIN_QUESTION_:

How do you get data into a GUI, then access it within the GUI so that the User
can alter it using the GUI, then get it out of the GUI again?

Here's the second question:

If you cannot do the things in the _MAIN_QUESTION_ then what's the use 
of a GUI?

Cheers
-------------------------------------------
"Professional qualitative judgement
    consists in knowing the rules
      for using (or occasionally breaking)
        the rules."
                             D. Royce Sadler
-------------------------------------------
Rick Duley
Murdoch University
School of Engineering Science
Perth, Western Australia
http://eng.murdoch.edu.au/~rick
aussie : 040 910 6049                .-_|\
o'seas : + 61 40 910 6049           /     \
                               perth *_.-._/
                                          v


Quoting Preben Randhol <randhol+gtkada at pvv.org>:

> On Tue, Jun 14, 2005 at 09:28:15AM +0800, Rick Duley wrote:
>> --==========
>> I have a Gtk_Entry within a Box, within a Frame, within a Box, within a
>> Toplevel
>> Window thus:
>>
>> +---------- Window ------------+
>> | +--------- VBox -----------+ |
>> | | +---- Frame&Label -----+ | |
>> | | | +----- HBox -------+ | | |
>> | | | | +--------------+ | | | |
>> | | | | |    Entry     | | | | |
>> | | | | +--------------+ | | | |
>> | | | +------------------+ | | |
>> | | +----------------------+ | |
>> | +--------------------------+ |
>> +------------------------------+
>>
>> Here is a code segment:
>>
>>    procedure On_Analyse60_Source_Folder_Entry_Changed
>>      (Object : access Gtk_Entry_Record'Class)
>>    is
>>       Main_Window : Gtk_Window := Get_Parent_Window(Widget => Object);
>>    begin
>>       . . .
>
> Why do you want to use Get_Parent_Window?
>
> If you look at the ref. manual it says:
>
>
>    function Get_Parent_Window
>      (Widget : access Gtk_Widget_Record) return Gdk.Window.Gdk_Window;
>    --  Return the widget's parent window.
>
> As you can see it returns a Gdk_Window
>
> use this:
>
>    function Get_Toplevel (Widget : access Gtk_Widget_Record) return 
> Gtk_Widget;
>    --  Return the toplevel ancestor of the widget.
>    --  This is the window or dialog in which the widget is included.
>    --  The widget returned does not have any parent.
>
> --
> Preben Randhol -------------- http://www.pvv.org/~randhol/Ada95 --
>                  ?For me, Ada95 puts back the joy in programming.?
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