I've got an event-enabled linear PIO that raise a custom dialog with a double click on it. It works fine swapping values between custom dialog and info object palette. I've implemented dialog handle procedure with item 1 (OK Button), item 2 (CancelButton). Now I would like to add item 12605 (preview button) which would operate as the Ok button (updating PIO ), but without exit from dialog. It doesn't work at all because seems that you must exit from the dialog event loop to obtain PIO updating.
Thanks in advance for any suggestion.