Maintenir un bouton enfoncé Cocoa

#import <UIKit/UIKit.h>


@interface ButtonviewController : UIViewController 
    

@property (strong, nonatomic) IBOutlet UIButton *SubjectButton;

@property (strong, nonatomic) NSString *CheckedBox;


- (IBAction)SubjectSelected:(id)sender;

@end

#import "ButtonviewController.h"


@interface ButtonviewController ()

@end

@implementation ButtonviewController

@synthesize SubjectButton;

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
  
    

    }

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}



- (IBAction)SubjectSelected:(id)sender {
    

        self.CheckedBox = @"Subject";
        
         NSLog(@"%@",self.CheckedBox );        
        

}
@end