all tasks

Task/Simple-windowed-application/Prolog/simple-windowed-application.pro

@@ -0,0 +1,41 @@
+:- dynamic click/1.
+
+dialog('Simple windowed application',
+       [ object        :=
+	   Simple_windowed_application,
+	 parts         :=
+	   [ Simple_windowed_application :=
+	       dialog('Simple windowed application'),
+	     Name                       :=
+	       label(name, 'There have been no clicks yet'),
+	     BtnClick                     :=
+	       button(button)
+	   ],
+	 modifications :=
+	   [ BtnClick := [ label := 'Click me !'
+		       ]
+	   ],
+	 layout        :=
+	   [ area(Name,
+		  area(40, 20, 200, 18)),
+	     area(BtnClick,
+		  area(90, 60, 80, 24))
+	   ],
+	 behaviour :=
+	 [
+	  BtnClick := [message := message(@prolog, btnclick, Name)]
+	 ]
+       ]).
+
+btnclick(Label) :-
+	retract(click(V)),
+	V1 is V+1,
+	assert(click(V1)),
+	sformat(A, '~w click(s)', [V1]),
+	send(Label, selection, A).
+
+simple_windowed :-
+	retractall(click(_)),
+	assert(click(0)),
+	make_dialog(D, 'Simple windowed application'),
+	send(D, open).