On the Apple page <http://developer.apple.com/releasenotes/Java/
Java50RN/2_ResolvedIssues/chapter_3_section_3.html>, I see the
following:
-------------------------
Radar #4008177
MouseInfo.getNumberOfButtons Return Values
Description:
MouseInfo.getNumberOfButtons is a new class in J2SE 5.0 that
returns information about the number of mouse buttons.
Resolution:
Because Mac OS X can have multiple mice connected and in use, as
well as using Universal Preferences instead of the mouse,
MouseInfo.getNumberOfButtons is generally inapplicable. Thus, it
always returns 0.
I remember seeing that in the release notes and thinging, "That's
just dumb." An implementation that seems much more reasonable would
return either the number of buttons on the mouse/trackpad with the
least number of buttons (currently 1 for any Mac I can think of) or
the the number for the device with the most number of buttons (e.g. 3
on my powerbook with a three-button USB mouse connected).
The value of 0 is simply likely to make things fail that shouldn't
fail. I.e. What is software that requires at least one mouse button
supposed to do?
Scott
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