An IVIB Primer - Unicon

method on_text_button_exit(ev)
dispose()
end
Add the following code to on_dialogmain so the dialog will close for the X event
method on_dialogmain(ev)
if \ev.param = -11 then #windows x box
on_text_button_exit(ev)
end
Save main.icn
Edit edit.icn and add the bolded code to on_text_button_exit() to close the dialog.
method on_text_button_exit(ev)
dispose()
end
Also add the bolded code to 'on_dialogedit'.
method on_dialogedit(ev)
if \ev.param = -11 then #windows x box
on_text_button_exit(ev)
end
Save edit.icn
Compile the program:
>unicon –o demo -G main.icn edit.icn
Run the program
>demo
When the main dialog comes up, you can click on the 'Modeless' button and a new edit dialog will
appear. Notice you can go back and forth from main dialog to edit dialogs. Every time you click, a new
dialog will be created.This is different from the show_modal dialogs where the focus was only given to
one dialog at a time.
We may not want our users creating too many dialog boxes. Let’s add Some code to limit them to one
only. If they click on the modeless button, and there is already a dialog open, we will set the focus on
the already opened dialog box.
In main.icn:
Add the global variable dedit at the top of main.icn (before the class declaration). This is the edit
dialog variable that will tell us if the dialog is open.
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