A pane containing a group of buttons of which only one can be selected at any time.
capi
The class radio-button-panel
inherits all of its behavior from button-panel, which itself inherits most of its behavior from choice. Thus, the radio button panel can accept items, callbacks, and so forth.
(capi:contain (make-instance 'capi:radio-button-panel :title "Select a color:" :items '(:red :green :blue) :print-function 'string-capitalize))
(setq buttons (capi:contain (make-instance 'capi:radio-button-panel :title "Select a color:" :items '(:red :green :blue) :print-function 'string-capitalize :layout-class 'capi:column-layout))) (capi:choice-selected-item buttons)
There is a further example here:
(example-edit-file "capi/buttons/buttons")
radio-button
push-button-panel
check-button-panel
5 Choices - panes with items
CAPI User Guide and Reference Manual (Unix version) - 01 Dec 2021 19:32:42