Generic function
Returns the callback invoked when the Next button is clicked in the specified multi-page dialog.
dialog-apply-callback dialog => callback
<dialog-frame>.
false-or(type-union(<command>, <function>)).
duim-frames
duim-frames
Returns the callback invoked when the Next button is clicked in dialog. This is most useful in multi-page dialogs such as property frames and wizard frames, which typically have Back and Next buttons that let the user navigate forward and backward through the sequence of pages that comprise the dialog.
Note: If you do not explicitly supply this callback, the next page in the sequence for the multi-page dialog is displayed when the Next button is clicked. Specifying your own callback gives you flexibility in describing how the user can navigate through the sequence of pages in the dialog.
The default value for this callback is move-to-next-page.
dialog-exit-callback, page 756