9.4 DUIM-Frames Module

dialog-exit-callback-setter

Generic function

Summary

Sets the callback invoked when the Exit button is clicked in the specified dialog.

Signature

dialog-exit-callback callback dialog => callback

Arguments

callback: An instance of type false-or(type-union(<command>, <function>)).
dialog: An instance of type <dialog-frame>.

Values

callback: An instance of type false-or(type-union(<command>, <function>)).

Library

duim-frames

Module

duim-frames

Description

Sets the callback invoked when the Exit button is clicked in dialog. The Exit button is commonly found in multi-page dialogs, where the user is given the option to exit the sequence at any point (as well as navigate through the sequence using Next and Back buttons).

If you do not supply this callback, then the default behavior is to quit the dialog when the Exit button is clicked. This is normally the action that you will want. Specifying your own callback gives you flexibility in describing other actions to be performed when the dialog is exited. In addition, supplying #f means that no Exit button is displayed at all.