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with FLTK.Widgets;
use FLTK.Widgets;
with FLTK.Widgets.Buttons;
use FLTK.Widgets.Buttons;
with FLTK.Widgets.Groups.Windows;
use FLTK.Widgets.Groups.Windows;
with Ada.Text_IO;
with Ada.Strings.Unbounded;
use Ada.Strings.Unbounded;
function Callback_Test return Integer is
Main_View : Window := Create (0, 0, 300, 300, "Tester");
Pusher : Button := Create (75, 75, 150, 150, "Push me");
type My_Callback is new Widget_Callback with
record
Msg : Unbounded_String;
end record;
SC : aliased My_Callback := (Msg => To_Unbounded_String ("Hello!"));
OC : aliased My_Callback := (Msg => To_Unbounded_String ("And again!"));
overriding procedure Call
(This : in My_Callback;
Item : in out Widget'Class) is
begin
Ada.Text_IO.Put_Line ("Pushed a button :O");
Ada.Text_IO.Put_Line (To_String (This.Msg));
if This.Msg = "Hello!" then
Item.Set_Callback (OC'Access);
Item.Set_Label ("Push me again!");
else
Item.Set_Callback (SC'Access);
Item.Set_Label ("Push me");
end if;
end Call;
begin
Main_View.Add (Pusher);
Pusher.Set_Callback (SC'Access);
Main_View.Show;
return FLTK.Run;
end Callback_Test;
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