9.4 DUIM-Frames Module
dialog-back-callback
Generic function
Summary
Returns the callback invoked when the Back button is clicked in the specified multi-page dialog.
Signature
dialog-apply-callback dialog => callback
Arguments
- dialog
- An instance of type
<dialog-frame>.
Values
- callback
- An instance of type
false-or(type-nonfunctional>, <command>)).
Library
duim-frames
Module
duim-frames
Description
Returns the callback invoked when the Back button is clicked in dialog. This is most useful in 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 previous page in the sequence for the multi-page dialog is displayed when the Back 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.
See also
dialog-back-button-setter, page 748