RosettaCodeData/Task/Window-creation/Objective-C/window-creation.m

#include <Foundation/Foundation.h>
#include <AppKit/AppKit.h>

@interface Win : NSWindow
{
}
- (void)applicationDidFinishLaunching: (NSNotification *)notification;
- (BOOL)applicationShouldTerminateAfterLastWindowClosed: (NSNotification *)notification;
@end


@implementation Win : NSWindow
-(instancetype) init
{
  if ((self = [super
    initWithContentRect: NSMakeRect(0, 0, 800, 600)
    styleMask: (NSTitledWindowMask | NSClosableWindowMask)
    backing: NSBackingStoreBuffered
    defer: NO])) {

    [self setTitle: @"A Window"];
    [self center];
  }
  return self;
}

- (void)applicationDidFinishLaunching: (NSNotification *)notification
{
  [self orderFront: self];
}

- (BOOL)applicationShouldTerminateAfterLastWindowClosed: (NSNotification *)notification
{
  return YES;
}
@end

int main()
{
  @autoreleasepool {

    [NSApplication sharedApplication];
    Win *mywin = [[Win alloc] init];
    [NSApp setDelegate: mywin];
    [NSApp runModalForWindow: mywin];

  }
  return EXIT_SUCCESS;
}