How to add stoplight buttons to an OS X application programmatically - objective-c

Question

I'm building an OS X cocoa application and I'm not using interface builder (for a variety of reasons). I've got the application to the point of loading a menu, title bar and main window, but I can't seem to figure out how to add the stoplight buttons to the title bar (programmatically).
My AppDelegate.m looks like this:
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
MainViewController *mVC = [MainViewController new];
[mVC showMainViewController];
}
Then code in the MainViewController then creates the menu, window, and loads the application, as follows:
//
// MainViewController.m
// TestApp
//
#import "MainViewController.h"
#implementation MainViewController
#synthesize menubar;
#synthesize appMenu;
#synthesize appMenuItem;
#synthesize quitMenuItem;
#synthesize appName;
#synthesize quitTitle;
#synthesize window;
#synthesize homeViewController;
#synthesize resolutionHeight;
#synthesize resolutionWidth;
#synthesize width;
#synthesize height;
- (id)init
{
self = [super init];
if (self) {
appName = #"TestApp";
[self setupMenubar];
[self setupMainWindow];
}
return self;
}
- (void)setupMenubar
{
// Set up the main menu
menubar = [NSMenu new];
appMenu = [NSMenu new];
appMenuItem = [NSMenuItem new];
quitTitle = [NSString stringWithFormat:#"Quit %#", appName];
quitMenuItem = [[NSMenuItem alloc] initWithTitle:quitTitle
action:#selector(terminate:)
keyEquivalent:#"q"];
[menubar addItem:appMenuItem];
[appMenu addItem:quitMenuItem];
[appMenuItem setSubmenu:appMenu];
[NSApp setMainMenu:menubar];
}
- (void)setupMainWindow
{
// set the dimensions of the application
resolutionWidth = [[NSScreen mainScreen] frame].size.width;
resolutionHeight = [[NSScreen mainScreen] frame].size.height;
width = resolutionWidth * 0.75;
height = resolutionHeight * 0.75;
window = [[NSWindow alloc] initWithContentRect:NSMakeRect(0, 0, width, height)
styleMask:NSTitledWindowMask
backing:NSBackingStoreBuffered defer:NO];
[window cascadeTopLeftFromPoint:NSMakePoint(10, 10)];
// add window buttons
closeButton = [NSWindow standardWindowButton:NSWindowCloseButton forStyleMask:NSTitledWindowMask];
// set metadata for the window
[window setTitle:appName];
[window makeKeyAndOrderFront:nil];
}
- (void)showMainViewController
{
// Set app settings
[NSApplication sharedApplication];
[NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];
[NSApp activateIgnoringOtherApps:YES];
[NSApp run];
}
#end
I've looked around and I'm kind of at a loss for how to proceed.

Answer 1

You might try changing your NSWindow init method to the following:
window = [[NSWindow alloc]
initWithContentRect:NSMakeRect(0, 0, width, height)
styleMask:NSTitledWindowMask | NSClosableWindowMask |
NSMiniaturizableWindowMask | NSResizableWindowMask
backing:NSBackingStoreBuffered defer:NO];
I believe that ORing in the additional masks automatically adds the corresponding buttons to the title bar for you: NSClosableWindowMask adds the close button, NSMiniaturizableWindowMask adds the minimize (center) button, and NSResizableWindowMask adds the zoom (rightmost) button.