gistfile1.txt

    NSWindow    * window = [[NSWindow alloc] initWithContentRect:NSMakeRect(100.0, 100.0, 300.0, 400.0) styleMask:NSTitledWindowMask | NSClosableWindowMask backing:NSBackingStoreBuffered defer:YES];

    NSWindow    * windowp = [[NSWindow alloc] initWithContentRect:NSMakeRect(100.0, 100.0, 500.0, 400.0) styleMask:NSBorderlessWindowMask backing:NSBackingStoreBuffered defer:YES];

    [windowp setContentView:[[View alloc] init]];
    [window addChildWindow:windowp ordered:NSWindowBelow];

    [windowp orderFront:self];
    [window makeKeyAndOrderFront:self];
    
    [window setLevel:3];