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Templet of "hiCreateListBoxField" and "callBack" from form.

anola123

Hi,

I'm new to the skill language and attempted the " hiCreateListBoxField" command but couldn't get the output. I want a simple template in which I can enter a list of strings into a form and when I select any of the items in the list, it will print that specific string.

I know it's a simple question, but I'm stumped and looking for an answer.

  • Hi,

    Here you go:

    (hiDisplayForm
  (hiCreateLayoutForm 'custom_form "Custom Form"
    (hiCreateFormLayout 'main_layout ?items (list
        (hiCreateListBoxField ?name 'list_box_field
          ?choices '("string 0"
                     "string 1"
                     "string 2"
                     "string 3"
                     )
          ?multipleSelect nil
          ?changeCB
          (lambda (field form)
            (let ((str (or (car (hiGetListBoxValue field)) "*no string selected*")))
              (printf "%s" str)
              nil))
          );list_box_field
        ));main_layout
    ))
  • in reply to AurelBuche
    1. Thanks for the reply.If you won't mind can you explain the changeCB part and why didn't we used callback option ?? 
  • in reply to anola123

    The difference between ?callback and ?changeCB is that the callback only gets triggered when the field has changed and the focus moves away from the field (e.g. moving the cursor outside of the form or moving to another field), whereas changeCB gets triggered as soon as a change is made (the focus does not need to change). The documentation states that - you could change it to ?callback and observe the difference, I think (I didn't try Aurélien's code but I trust it implicitly!)

    Andrew

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