Bear實驗室：Mac開發 - OS X APP Part1 : Hello World http://www.takobear.tw/12/post/2014/02/bearmac-os-x-app-part1-hello-world.html

bearAppDelegate.h

@property (weak) IBOutlet NSTextField *message;
@property (weak) IBOutlet NSTextField *yourname;

- (IBAction)submit:(id)sender;

bearAppDelegate.m

- (IBAction)submit:(id)sender
{
    NSString *name = [self.yourname stringValue];
    [self.message setStringValue:[NSString stringWithFormat:@"Welcome, %@!", name]];
}