How to group radio buttons (from storyboard) in cocoa application?

Question

I'm trying to group 2 radio buttons in cocoa application.

but unlike in iOS, where you can connect the buttons with control-drag (as shown in the picture)

in cocoa application I didn't find any elegant way to do so...

any suggesting before I do something ugly?

Answer 1

so here is my not very elegant solution -

1. define array of buttons in the class:

NSArray* _radioButtonsArray;

2. initialize it in viewDIdLoad:

   _radioButtonsArray = [[NSArray alloc] initWithObjects:_radioButton1,_radioButton2,_radioButton3, nil];
   

3. define a radioButtonIsPressed method and connect it to all radio buttons as an action:

   -(IBAction)radioButtonIsPressed:(id)sender{ for (NSButton* btn in _radioButtonsArray){ if (btn != sender) [btn setState:0]; } }