PopoverViewController.m

/*
 Copyright (C) 2015 Apple Inc. All Rights Reserved.
  See LICENSE.txt for this sample’s licensing information
  
  Abstract:
  NSViewController subclass for managing the NSPopover's user interface. 
 */
 
#import "PopoverViewController.h"
 
@implementation PopoverViewController
 
- (IBAction)checkBoxAction:(id)sender
{
    // user has clicked the check box in the popover (or its detached window)
}
 
@end