9.4 DUIM-Frames Module
dialog-help-callback
Generic function
Summary
Returns the callback invoked when the Help button is clicked in the specified dialog.
Signature
dialog-help-callback dialog => help-callback
Arguments
- dialog
- An instance of type
<dialog-frame>.
Values
- help-callback
- An instance of type
false-or(type-union(<command>, <function>)).
Library
duim-frames
Module
duim-frames
Description
Returns the callback invoked when the Help button is clicked in dialog. Many dialogs contain a Help button that, when clicked, displays a relevant topic from the online help system for the application.
Note: You must specify this callback in order to create a Help button in any dialog. If the callback is #f, then there will be no Help button present in the dialog.
See also
dialog-cancel-callback, page 752