A group of check buttons can be created with the
check-button-panel
class. Any number of check buttons can be selected.
Here is an example of a check button panel:
(contain
(make-instance
'check-button-panel
:items '("Red" "Green" "Blue")))
Figure 6.3 A check button panel
CAPI User Guide (Macintosh version) - 30 Aug 2011