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13.7.13 delete-item-callback in extended-selection-tree-view

The :delete-item-callback initarg of capi:tree-view is now documented, and its interface has changed.

In LispWorks 6.0 and earlier delete-item-callback makes multiple calls, one with each selected item. In LispWorks 6.1 and later it makes a single call with a list of the selected items. Existing programs that use :delete-item-callback in the subclass capi:extended-selection-tree-view need to be changed. The example in examples/capi/choice/extended-selection-tree-view.lisp shows a program that works both before and after this change.

LispWorks Release Notes and Installation Guide - 23 Dec 2011