how to create a button to do some function in xpce/prolog

Question

?- new(B, button(hello,
                 message(@pce, write_ln, hello))).

In xpce/prolog, this the way to create a button to print a sentence is there any way that when i click a button i want to do some function, please help!

Answer 1

from Help > XPCE manual > Browsers > Examples > Obtainers + Right Click + Select you can see a practical example.

create_person_dialog :-
    new(D, dialog('Enter new person')),
    send(D, append, new(label)),    % for reports
    send(D, append, new(Name, text_item(name))),
    send(D, append, new(Age, text_item(age))),
    send(D, append, new(Sex, menu(sex, marked))),

    send(Sex, append, female),
    send(Sex, append, male),
    send(Age, type, int),

    send(D, append,
         button(create, message(@prolog, create_person,
                                Name?selection,
                                Age?selection,
                                Sex?selection))),

    send(D, default_button, create),
    send(D, open).

create_person(Name, Age, Sex) :-
    format('Creating ~w person ~w of ~d years old~n',
           [Sex, Name, Age]).

After open highlight create_person_dialog, right click and Consult should get (I filled some value)

and clicking Create output in console

Creating male person goofy of 99 years old

Generally you need to attach your buttons to some GUI to get their functionality.

HTH

edit here the layout I get on Windows

there is a difference in the way those 2 images are obtained: in Windows I have the context menu Consult active after opened the help topic.