This is a Cocoa port of a Carbon app (and I also have Windows and 
GTK versions). My code assumes that I'm controlling the radio 
buttons, which has worked fine until now (apparently the 10.8 SDK). 
What I want is a radio style button which turns on when I want it on 
and turns off when I want it off and doesn't go off and manage itself 
along with the other buttons that the OS thinks (incorrectly in this 
case) are logically linked to it.

Tom Doan
Estima

> > On Apr 10, 2014, at 6:57 AM, Keary Suska <cocoa-...@esoteritech.com>
> > wrote:
> > 
> >> On Apr 9, 2014, at 5:30 PM, Graham Cox wrote:
> >> 
> >> I'm not exactly certain of the mechanism, but I think radio buttons
> >> interact as a set through the agency of their immediate superview,
> >> so if several buttons share it, they are assumed to be part of the
> >> same set.
> >> 
> >> So you can embed the separate sets into container views or
> >> NSMatrix, and they'll work as you want. You mention NOT putting
> >> them into a NSMatrix for some reason - what reason? That's the
> >> usual way to set up radios, though it comes with the added
> >> restriction that the buttons have to be laid out on a regular grid.
> >> But embedding them in a custom view that draws nothing should also
> >> work, and that has no such limitation.
> > 
> > 
> > That would be great functionality that I have often desired but
> > AFAICT that is not the case--at least I am unable to replicate it.
> > Or do you mean multiple radio-type NSButtonCells in a single view?
> > That would make sense but only NSMatrix has that functionality
> > built-in, AFAIK.
> 
> I think Graham is referring to this feature, added in 10.8:
> 
> > An NSButton configured as a radio button (with the -buttonType set
> > to NSRadioButton), will now operate in a radio button group for
> > applications linked on 10.8 and later. To have the button work in a
> > radio group, use the same -action for each NSButton instance, and
> > have the same superview for each button. When these conditions are
> > met, checking one button (by changing the -state to 1), will uncheck
> > all other buttons (by setting their -state to 0).
> 
> <https://developer.apple.com/library/mac/releasenotes/AppKit/RN-AppKit
> OlderNotes/>
> 
> Tom, are you sure that your two sets of radio buttons use different
> actions?
> 
> --Kyle Sluder
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