
The generic function destroy closes the window associated with an interface and then calls the interface's destroy-callback .
This closes the window associated with interface , and then calls the interface's destroy-callback if it has one. There is a complementary function quit-interface which calls the interface's confirm-destroy-function to confirm that the destroy should be done, and it is advisable to always use this unless you want to make sure that the interface's confirm-destroy-function is ignored.
(setq interface
(capi:display (make-instance
'capi:interface
:title "Test Interface"
:destroy-callback
#'(lambda (interface)
(capi:display-message
"Quitting ~S"
interface)))))
(capi:destroy interface)