Radio Buttons

[Richard Gaskin]

Colin Holgate wrote:

 > On Jan 17, 2011, at 3:03 PM, Bob Sneidar wrote:
 >
 >> I agree Colin. Users expect a radio button to be exactly one and
 >> only one of 2 or more choices. Checkboxes are expected to be none
 >> to any of one or more choices.
 >
 > It is an interesting interface issue though, and there can be cases
 > where you have to only make one choice, if you're interested to do
 > so, but if you accidentally do that there isn't a way to select
 > nothing again. Some dialogs solve that by having a Clear button,
 > though that seems wrong somehow.
 >
 > In Adobe products they have a not bad solution to the issue. Next to
 > some drop down menus are checkboxes. If you make a selection from the
 > menu, the checkbox next to it gets checked. There are several of
 > these within the same dialog, and so you can easily specify a lot of
 > things at once, and if you have made an incorrect selection, you can
 > uncheck the box next to that menu.

That can be a good solution.  Or if you need to have the options visible 
as radio buttons, you could consider a third labeled "None".

--
  Richard Gaskin
  Fourth World
  LiveCode training and consulting: http://www.fourthworld.com
  Webzine for LiveCode developers: http://www.LiveCodeJournal.com
  LiveCode Journal blog: http://LiveCodejournal.com/blog.irv