On 3 Feb 2004, at 10:29 pm, Bj�rnke von Gierke wrote:
Any form of one object having three stages is confusing and extremely
nonstandard. Use 3 radiobuttons instead. Short description about how
to do that:
1. make 3 radiobuttons, name them "Yes", "No" and "Don't know"
2. group them
3. use the "hilitedButtonName" of the group like this:
put the hilitedButtonName into AnswerToThreefoldQuestion
As for the line-trough checkboxes:
They should only be used in cases where you have a hierarchy of
checkboxes and indicate that some, but not all of the checkboxes in
the branch of the lined checkbox have been checked.
See also the screensaver activation preference in Mac OS X. They need
to include a lengthy explanation about why there are three states of
these checkboxes.
While normally I would agree with this and am familiar with the
techniques for using radio buttons, I have a database with numerous
fields and then a separate list of 20 items with the 3 options as
discussed. If I use 3 radio buttons for each item, that gives me a
display of 60 buttons! In this case, I think the users would be much
more comfortable with a single button for each item, which can display
the 3 different states.
Cheers,
Sarah
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