If you need to alter the constraints on an existing element, use the function
set-hint-table
. See how the interface in Character constraints resizes after this call:
(apply-in-pane-process editor2
'set-hint-table editor2 '(:visible-min-width (:character 100)))
If you define your own
pinboard-object
class, ensure that its hint table matches the visible geometry and is kept synchronised after any movement of the object, otherwise redrawing may be incorrect.
Similarly if you draw pinboard objects under a transform, call
set-hint-table
with the transformed geometry to ensure correct redrawing.
CAPI User Guide (Macintosh version) - 30 Aug 2011