6.1.4 Mnemonics in button panels

On Windows and GTK+ you can specify the mnemonics (underlined letters) in a button panel with the :mnemonics initarg, for example:

(contain

 (make-instance 'push-button-panel

                :items '(one two three many)

                :mnemonics '(#\O #\T #\E :none)

                :print-function 'string-capitalize))

Notice that the value :none removes the mnemonic.

CAPI User Guide (Macintosh version) - 30 Aug 2011