selectionChanged for empty selection?

[Alex Rice]

Why isn't a selectionChanged message sent by a list field when the 
selection goes from one or more lines to empty lines? For example 
Option-clicking on a Mac to deselect a line in a list field.

I can work around it by handling mouseUp, but this seems to reduce the 
utility of the selectionChanged message.

Alex Rice, Software Developer
Architectural Research Consultants, Inc.
http://ARCplanning.com